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Aquarius Command and Control System pre-CDR. Aquarius Command and Control System pre-CDR Agenda. Agenda. Aquarius Science Mission Overview Aquarius/SACD Ground System Overview NASA Ground Network AQ/SACD Support Ocean Biology Network and Information Technology Security

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Agenda l.jpg
Agenda

  • Aquarius Science Mission Overview

  • Aquarius/SACD Ground System Overview

  • NASA Ground Network AQ/SACD Support

  • Ocean Biology Network and Information Technology Security

  • Aquarius Operations Concept – Nominal

  • Aquarius Operations Concept – Anomaly

  • Aquarius Command and Control Requirements

  • Aquarius Command and Control Design

  • Aquarius Test Bed

  • Aquarius Command and Control Test Plan

  • Risks

    Acronym List and Backup Slides provided



Aquarius mission science l.jpg

WOA 2001 NOAA/NODC

Aquarius Mission Science

Understanding the Interactions Between the Ocean Circulation, Global Water Cycle and Climate by Measuring Sea Surface Salinity

Global salinity patterns are linked to rainfall and evaporation

Salinity affects seawater density, which in turn governs ocean circulation and climate

The higher salinity of the Atlantic sustains the oceanic deep overturning circulation

Salinity variations are driven by precipitation, evaporation, runoff and ice freezing and melting


Science objectives and the need for satellite measurements l.jpg

World Ocean Atlas

Science Objectives and the need for Satellite Measurements

  • This diagram shows the sampling distribution of all the historical surface salinity measurements

  • The data are much too sparse to monitor salinity variations over space and time.

  • Systematic global mapping is required to study the climatic interactions between the ocean and atmosphere

  • Science Requirements: Global coverage, 150 km and monthly space/time resolution, 0.2 psu accuracy, three year mission

  • Science Objectives:

  • Determine the mean global surface salinity field, including vast under-sampled regions

  • Resolve the seasonal cycle

  • Track interannual variations linked to changes in the water cycle and ocean currents

  • Improve El Niño predictability

  • Reduce the large uncertainty in the marine hydrological budget and its variability

    • 86% of mean global evaporation and 78% of global precipitation occur over the ocean

  • Better initialize surface hydrology in climate models to improve climate prediction


The aquarius sac d salinity mission l.jpg

Sensitivity vs Radiometer Frequency

Tb=εT

ε = f(S, T, Freq, Incidence)

WOA 2001 NOAA/NODC

1400-1427 MHzProtected Band

The Aquarius/SAC-D Salinity Mission

Aquarius/SAC-D is designed to observe the global surface salinity field for three years and to achieve a monthly accuracy that will resolve the seasonal and interannual variability at 150 km scales.

Approach:

  • Integrated L-band ultra-stable microwave radiometer-radar, 3 fixed beams, 390 km wide swath, 7-day repeat polar orbit

  • Monthly averages to reduce measurement noise and achieve 0.2 psu RMS accuracy

  • Three year baseline mission to resolve seasonal to interannual variability and robust mean field

  • Independent calibration and validation from global in situ ocean observing system




Slide10 l.jpg

Division of Responsibilities

  • Pre-Launch

    • PI

      • Defines science requirements

    • JPL

      • Scatterometer development

      • Project management

    • CONAE

      • SAC-D spacecraft and ground system development

    • GSFC

      • Radiometer development

      • Aquarius instrument data processing development

      • Aquarius instrument Mission Operations development

  • Post-Launch / Commissioning

    • PI

      • Science management

    • JPL

      • Ad-hoc support as requested by the PI

      • PO.DAAC archive and distribution of validated Aquarius data

    • CONAE

      • SAC-D spacecraft and ground system operation

    • GSFC

      • Project management

      • Aquarius instrument data processing, archive, distribution

      • Aquarius instrument Mission Operations


Nasa ocean biology processing group l.jpg
NASA Ocean Biology Processing Group

  • Located: Goddard Space Flight Center

  • Total Archive size: 332 TB

  • Distribution (> 2/04): 27 million files

  • Aquarius support is implemented within the framework and facilities of the current NASA Ocean Data Processing System (ODPS) which has been successfully supporting operational, satellite-based remote-sensing missions since 1996, and its capabilities continue to evolve and expand to meet the demands and challenges of future missions

    • MISSIONS SUPPORTED

  • SeaWiFS : 1997 - active

  • MODIS (Terra and Aqua) : 2000 - present

  • CZCS / Nimbus-7 : 1978 - 1986

  • OCTS / ADEOS-I : 1996 - 1997

  • Glory data system prototype : 2009 launch

  • Aquarius / SAC-D : May 2010 launch

  • VIIRS / NPP : June 2010 launch

  • Community Processing & Analysis Software SeaDAS (1991- present)

  • oceancolor.gsfc.nasa.gov

    • Consolidated data access,information services and community feedback


    Slide12 l.jpg

    Aquarius Ground System Responsibilities

    NASA Management: Oversight of the overall effort, communication/coordination with other NASA organizations and centers and CONAE; oversight of science support, algorithm integration, QC, validation and in situ data support.

    Contractor Management: Oversight of contract support staff, including hiring, tasking, review of deliverables and schedules.

    Mission Operations: Technical lead for instrument operations and commanding support; interface to instrument engineers and CONAE mission operations.

    Systems Engineering and Interface Definition: Technical lead for the data system effort; overall system design, implementation schedule, interface definition, data format specification, reviews and presentations.

    Software Engineering: Technical lead for the level conversion / product generation software, including development of the Level 0-to-1 software and integration/packaging of the science (Level 2 and 3) processing software to be provided by the algorithm developers.

    Software Development: Support for science code packaging, integration and testing.

    Data Systems Support: Integrate the product generation software into the existing automated processing system, develop ingest modules, develop database tables for archive products, develop schedules and recipes for data acquisition, production and migration.

    Systems Administration: Specify and acquire new processing and data storage hardware, integrate into existing data processing facility, verify/upgrade network capability for external data transfers.

    Quality Control and Validation: Working with the Science Team, develop methodologies, tools, procedures and reports for operational QC; specify data and develop algorithms and tools for data and science algorithm validation.

    In Situ Data Support: Work closely with the Aquarius Validation Data System (AVDS) to develop methods and tools for data analysis and quality control, building upon the existing SeaWiFS Bio-optical Archive and Storage System (SeaBASS).

    Archive and Distribution: Incorporate Aquarius product browse, search, order and distribution into existing web-based Ocean Color capability and work with JPL PO.DAAC regarding “institutional” archive support requirements.

    Benefits of Discipline-based Processing - Pool of existing expertise at 10 cents on the dollar


    Slide13 l.jpg

    Aquarius Ground System Interfaces

    ADPS ACCS

    Aquarius Aquarius

    Data Command &

    Processing Control

    System System


    Slide14 l.jpg

    Aquarius Ground System Interfaces

    S-Band

    CONAE

    X-Band

    X-Band

    Mission RF

    Operations Services

    Command

    Center

    Cordoba

    Aquarius Command Schedules

    And Reports

    Schedule Confirmation

    And Reports

    Matera

    ADPS ACCS

    Aquarius Aquarius

    Data Command &

    Processing Control

    System System


    Slide15 l.jpg

    Aquarius Ground System Interfaces

    S-Band

    S-Band

    CONAE

    X-Band

    Commands

    Real-Time

    Telemetry &

    Coordination

    X-Band

    Mission RF

    Operations Services

    Command

    Center

    Wallops Svalbard Alaska McMurdo

    NASA Ground Network

    Vandenberg

    Cordoba

    Aquarius Command Schedules

    And Reports

    Schedule Confirmation

    And Reports

    Matera

    ADPS ACCS

    Aquarius Aquarius

    Data Command &

    Processing Control

    System System


    Slide16 l.jpg

    Aquarius Ground System Interfaces

    S-Band

    S-Band

    CONAE

    X-Band

    Commands

    Real-Time

    Telemetry &

    Coordination

    X-Band

    Mission RF

    Operations Services

    Command

    Center

    Wallops Svalbard Alaska McMurdo

    NASA Ground Network

    Vandenberg

    Cordoba

    Aquarius Command Schedules

    And Reports

    Schedule Confirmation

    And Reports

    Matera

    ADPS ACCS

    Aquarius Aquarius

    Data Command &

    Processing Control

    System System

    Calibration &

    Instrument

    Configuration

    Change

    Requests

    Instrument

    Engineering

    Team

    Principal Investigator

    and

    Science Planning Team


    Slide17 l.jpg

    Aquarius Ground System Interfaces

    S-Band

    CONAE

    X-Band

    X-Band

    Data

    Archive

    Mission RF

    Operations Services

    Command

    Center

    Cordoba

    Matera

    ADPS ACCS

    Aquarius Aquarius

    Data Command &

    Processing Control

    System System


    Slide18 l.jpg

    Aquarius Ground System Interfaces

    S-Band

    CONAE

    X-Band

    X-Band

    Data

    Archive

    Mission RF

    Operations Services

    Command

    Center

    Cordoba

    3 - 5 downlinks / day

    Matera

    2 downlinks / day

    ADPS ACCS

    Aquarius Aquarius

    Data Command &

    Processing Control

    System System


    Slide19 l.jpg

    Aquarius Ground System Interfaces

    S-Band

    CONAE

    X-Band

    X-Band

    Data

    Archive

    Pre-Processor

    Cordoba

    Aquarius Data and

    Telemetry

    Matera

    ADPS ACCS

    Aquarius Aquarius

    Data Command &

    Processing Control

    System System


    Slide20 l.jpg

    Aquarius Ground System Interfaces

    S-Band

    CONAE

    X-Band

    X-Band

    Data

    Archive

    Pre-Processor

    Cordoba

    Aquarius Data and

    Telemetry

    Matera

    ADPS ACCS

    Aquarius Aquarius

    Data Command &

    Processing Control

    System System


    Slide21 l.jpg

    Aquarius Ground System Interfaces

    S-Band

    CONAE

    X-Band

    X-Band

    Data

    Archive

    Pre-Processor

    Cordoba

    Aquarius Data and

    Telemetry

    Ancillary Data

    Sources

    Matera

    ADPS ACCS

    Aquarius Aquarius

    Data Command &

    Processing Control

    System System


    Slide22 l.jpg

    Aquarius Ground System Interfaces

    S-Band

    CONAE

    X-Band

    X-Band

    Data

    Archive

    Pre-Processor

    Cordoba

    Aquarius Data and

    Telemetry

    Ancillary Data

    Sources

    Matera

    ADPS ACCS

    Aquarius Aquarius

    Data Command &

    Processing Control

    System System

    Algorithms &

    Science Code

    Evaluation

    Products

    Science Team

    and

    Algorithm Providers


    Slide23 l.jpg

    Aquarius Ground System Interfaces

    S-Band

    CONAE

    X-Band

    X-Band

    Data

    Archive

    Pre-Processor

    Cordoba

    Aquarius Data and

    Telemetry

    Ancillary Data

    Sources

    Matera

    ADPS ACCS

    Aquarius Aquarius

    Data Command &

    Processing Control

    System System

    Algorithms &

    Science Code

    Evaluation

    Products

    Science Team

    and

    Algorithm Providers

    Insitu Data

    Aquarius

    Data

    AVDS

    Aquarius Validation

    Data System


    Slide24 l.jpg

    Aquarius Ground System Interfaces

    S-Band

    CONAE

    X-Band

    X-Band

    Data

    Archive

    Pre-Processor

    Cordoba

    Aquarius Data and

    Telemetry

    Ancillary Data

    Sources

    Matera

    ADPS ACCS

    Aquarius Aquarius

    Data Command &

    Processing Control

    System System

    Algorithms &

    Science Code

    Evaluation

    Products

    Science Team

    and

    Algorithm Providers

    Level-1 & Level-3

    Aquarius Data

    Insitu Data

    Aquarius

    Data

    AVDS

    Aquarius Validation

    Data System

    PO.DAAC

    Aquarius L1, 2, 3 Data

    Ancillary Data

    Feedback

    Data Users

    and

    Science Team

    Software

    SeaDAS


    Slide25 l.jpg

    Aquarius Ground System Interfaces

    S-Band

    S-Band

    CONAE

    X-Band

    Commands

    Real-Time

    Telemetry &

    Coordination

    X-Band

    Data Mission RF

    Archive Operations Services

    Command

    Center

    Wallops Svalbard Alaska McMurdo

    Pre-Processor

    NASA Ground Network

    Vandenberg

    Cordoba

    Aquarius Command Schedules

    And Reports

    Aquarius Data and

    Telemetry

    Schedule Confirmation

    And Reports

    Ancillary Data

    Sources

    Matera

    ADPS ACCS

    Aquarius Aquarius

    Data Command &

    Processing Control

    System System

    Calibration &

    Instrument

    Configuration

    Change

    Requests

    Algorithms &

    Science Code

    Evaluation

    Products

    Instrument

    Engineering

    Team

    Principal Investigator

    and

    Science Planning Team

    Science Team

    and

    Algorithm Providers

    Level-1 & Level-3

    Aquarius Data

    Insitu Data

    Aquarius

    Data

    AVDS

    Aquarius Validation

    Data System

    PO.DAAC

    Aquarius L1, 2, 3 Data

    Ancillary Data

    Feedback

    Data Users

    and

    Science Team

    Software

    SeaDAS





    Operations concept for achieving science objectives l.jpg
    Operations Concept for Achieving Science Objectives

    • Orbit description

      • Sun-synchronous, 6pm ascending node

      • 98 degree inclination

      • 657 +/- 1.5 km altitude

      • 7 day repeat track

    • Orbit maneuvers approximately every 28 days (delta V)

      • +/- 10 km box maintenance

      • Box tolerance expanded during solar max

      • Inclination maneuvers possible but not planned into the mission

    • Aquarius operated continuously

    • AQ Science data loss budget

      • 2.4 days per month (30.4 days)

      • Based on maintenance of 0.1 degree thermal stability for AQ

    • Optional Cold Sky Calibration Maneuvers

      • Estimated frequency of 1/month

      • Thermal transient expected to degrade science data for about 1 orbit


    Aq sacd communications links l.jpg
    AQ/SACD Communications Links

    • S-band 4kbps uplink

    • S-band 4kbps downlink

      • Real time Housekeeping Telemetry (HKT)

      • 4000 byte frame

      • SAC-D, Aquarius and other instrument HKT (8 instruments total)

    • X-band 16Mbps downlink

      • Stored HKT; identical format to the real time HKT frame

      • Stored science data for all instruments

      • CCSDS

      • Aquarius allocation is 4Mbps


    Operations ground station network l.jpg
    Operations Ground Station Network

    • Primary station is CONAE’s ETC facility in Cordoba, Argentina

      • Aquarius requires a download at least once every 14 hours to avoid buffer overwrite

      • Single station provides approximately one d/l per 10 hours if both passes taken

        • Orbit track typically takes AQ/SACD over ETC for two successive ascending passes and two successive descending passes.

      • One station outage (one “pass set”) results in data overwrite

    • Margin provided via the addition of a second X-band station

      • Italy’s ASI provides the Matera site

      • Global location is ideal for ETC backup;

        • approximately 90 longitudinal degrees from Cordoba.

        • Higher latitude offers 3 successive ascending or descending passes vs. ETC’s 2.

        • Dual station outage now required to cause data loss.

        • System supports use of all available Matera passes

    • ASI’s Malindi site in Kenya can be used for S-band downlink

      • Provides “first look” opportunity for launch vehicle separation, solar array deployment

    • NASA Ground Network S-band support

      • S-band uplink/downlink

      • Emergency support

      • Maneuver support


    Nominal aquarius commanding l.jpg
    Nominal Aquarius Commanding

    • Nominal Aquarius commanding includes

      • Downlink commands

      • Possible software maintenace commands

      • Cold Sky Calibration targeting requests

    • Possible Science commanding includes

      • Radiometer control commands

        • Normally runs as a state machine from on-board Look Up Table (LUT)

        • Science may request a change to a different LUT (7 pre-programmed, 1 programmable)

      • Automatic thermal control system commands

        • Setpoint, Power, Integral, Derivative Parameter changes


    Cold sky calibration l.jpg
    Cold Sky Calibration

    • The Cold Sky Calibration is a pitch maneuver under the control of CONAE but requested by the Aquarius science team

      • Purpose is to rotate Aquarius in the direction of cold space

      • Specific cold location is selected by AQ science team

      • Serves as an low temperature calibration point for the Radiometer

      • Maneuver steps are to:

        • Pitch toward cold sky

        • Cold Sky dwell is planned to be approximately 1 minute

        • Pitch in the reverse direction back to earth pointing

    • Maneuver occurs away from ground support

      • NGN provides pre- and post- look pass support


    Aquarius downlink l.jpg
    Aquarius Downlink

    • Two Aquarius instruments:

      • Radiometer (primary)

      • Scatterometer (ancillary)

    • Support subsystems:

      • Automatic Thermal Control

      • Power Distribution Unit

      • Instrument Command and Data Subsystem (ICDS)

      • Antenna, feeds and structure

    • All subsystems forward science and HKT in fixed formats to the ICDS

    • ICDS packages HKT and science every 1.44 seconds

      • Stored in the ICDS RAD6000 RAM

      • 110 MB of storage capacity

      • d/l command downloads buffer in circular fashion until stop cmd received

      • Passed through CCSDS formatter and on to X-band transmitter

    • ICDS packages HKT and software messages in packetized form (vs. fixed format) every 8 seconds.

      • 500 bytes

      • Passed to SACD and inserted into 4000 byte frame

      • Stored in SACD Mass Memory

      • When S-band transmitter is on, data is also sent to the ground in real time


    High level description aquarius command planning cycle l.jpg
    High Level Description: Aquarius Command Planning Cycle

    • Aquarius operations:

      • prepares two weeks of command loads each week

      • Forwards commands to the Planning System at ETC

      • Receives acknowledgement report that they were accepted as feasible or not

    • Approximately one week is available for changes

    • Then Observatory planning cycle is entered

      • Aquarius commands are incorporated into SACD and other instrument command plans

      • Final plan is reported back to Aquarius operations

    • Plan is uploaded with any duplicate commands deleted



    Anomaly resolution process l.jpg
    Anomaly Resolution Process

    • Process developed jointly by JPL, GSFC, CONAE Operations Assurance

    • In flight, the anomaly process is led by CONAE.

    • Process is captured in SACD document: SD-2510-0062, SAC-D FLIGHT ANOMALY REPORTING PROCEDURE

      • Please note that the Science Operations Control Board (SOCB) in Aquarius documentation equates to the SACD Flight Anomaly Review Board (SAFARB) in CONAE documentation.

    • Instrument anomalies will be resolved by Aquarius team with process still led by CONAE

    • Process:

      • Notify management (CONAE, then instrument)

      • Establish a resolution team led by a control board

      • Resolve the anomaly under control board authority

        • Teams will rely on AQ and SACD testbeds to create and test problems and scripts

      • Report the anomaly via the CONAE Flight Anomaly Report (FAR) system

    • The Goddard Flight team will also file detailed Aquarius instrument anomaly reports on the Goddard reporting system. Aquarius reports will be sharable with JPL.


    Slide38 l.jpg

    SAC-D Instrument Ops Team

    Report anomaly

    SAC-D Ops Team

    MOM

    Report anomaly

    Other data observer

    Report anomaly

    Report anomaly

    Aquarius Ops Team

    Any anomaly observer(s) immediately report the detected ground or Observatory problem to the Mission Operations Manager (MOM)


    Slide39 l.jpg

    Gathers CONAE analysis team to identify problem source

    2

    Based on analysis result, MOM selects an anomaly resolution team

    3

    1a

    May require AQ or 3rd party instrument support; obtain via SOCB

    MOM

    1b

    Each SOCB member alerts his system team and selects anomaly resolution team members as needed

    Notifies Science Operations Control Board of the anomaly

    4

    MOM initiates anomaly response and notification to formulate response team


    Slide40 l.jpg

    Status to teams

    Status to teams

    SOCB

    Anomaly resolution plan approval

    Cmd Plan execution reports (status reports)

    Anomaly resolution team

    Command plans

    Command plans

    Ops Team

    MOM

    Observed telemetry changes and observations

    Observed telemetry changes and observations

    MOM manages anomaly resolution process with support of SOCB

    Feedback to MOM; “fix worked” or “more to be done” or “need more help”, etc


    Slide41 l.jpg

    Aquarius Final Report to GSFC Anomaly tracking system if appropriate

    SOCB/CONAE

    Anomaly notes and logs

    Final Report

    Anomaly resolution team

    Ops Team

    MOM

    Anomaly notes and logs

    Anomaly notes and logs

    MOM generates and distributes final report; Aquarius anomalies may require an additional, separate report filed at GSFC by AQ GS








    Accs gold rules compliance matrix l.jpg
    ACCS Gold Rules Compliance Matrix appropriate

    • Initial Gold Rules Compliance Matrix was generated in May, 2005

    • Basis was the 12/10/04 release

    • Verified full compliance; no waivers required

    • Reviewed again by Steve Scott and David Durham (Aquarius Mission System Engineer) in 2008. Compliance verified.


    Accs documents l.jpg

    ACCS Documents appropriate


    Accs documentation l.jpg
    ACCS Documentation appropriate

    • L3 Aquarius Ground System and Test Requirements

      • AQ-328-0162

      • Final version available for distribution

    • Aquarius Ground System Integration, Test and Training Plan

      • AQ-336-0244

      • Final version available for distribution

    • Project Service Level Agreement

      • 451-PSLA-SACD

      • Final version available for distribution

    • Aquarius Operations Processes and Procedures

      • Future document

    • ACCS elements of the Aquarius Ground System to Science Team ICD

      • Future document; draft state

    • AQ GS – SACD GS ICD is a CONAE document

      • Most recent version available for distribution. Final version due 4/18/08

    • Aquarius/SACD Mission Plan is a CONAE document

      • Final version available for distribution

    • Aquarius/SACD Flight Anomaly Reporting Procedure is a CONAE document.

      • Most recent version available for distribution. Final version due 4/18/08.


    Accs configuration management l.jpg
    ACCS Configuration Management appropriate

    • Ocean Biology Configuration Control via Subversion CM Tool

    • All ACCS code and documentation under CM

      • Command and telemetry scripts

      • Executables (CONAE tools)

      • Processes and procedures

      • Instrument team receivable documents

    • Subversion offers web-based access

      • supports shared configuration control of selected files with SACD

      • AQ command and telemetry dictionaries

      • AQ/SACD telemetry scripts and pages

      • CONAE procedures for AQ operations

    • Subversion CM structure has been built and populated with preliminary documents



    Aq sacd ground system overview l.jpg
    AQ/SACD Ground System Overview appropriate

    4kbps uplink Sband

    4kbps downlink Sband

    16Mbps downlink Xband

    observatory

    CGSS

    CONAE Ground System Services

    FGSS

    Foreign Ground System Services

    CODS

    CONAE Orbit Dynamics Service

    FC

    Flight Control Subsystem

    SOC

    Spacecraft Operations Center

    SOP

    Spacecraft Operations Planning

    FUSS

    Foreign User Segment Services


    Aq sacd gs uplink data flow l.jpg
    AQ/SACD GS Uplink Data Flow appropriate

    Nominal cmd path

    observatory

    4kbps uplink Sband

    Alt/Emerg cmd path

    RF

    CGSS

    CONAE Ground System Services

    FGSS

    Foreign Ground System Services

    ARs

    Action Requests

    Command frames

    SOC

    Spacecraft Operations Center

    FC

    Flight Control Subsystem

    Pass plans

    CODS

    CONAE Orbit Dynamics Service

    reports

    reports

    SOP

    Spacecraft Operations Planning

    Pass plans

    FUSS

    Foreign User Segment Services

    Reports / ARs


    Aq sacd gs low rate downlink data flow l.jpg
    AQ/SACD GS Low Rate Downlink Data Flow appropriate

    Nominal 4kbps d/l path

    4kbps downlink Sband

    observatory

    Emerg. 4kbps d/l path

    RF

    CGSS

    CONAE Ground System Services

    FGSS

    Foreign Ground System Services

    CODS

    CONAE Orbit Dynamics Service

    RT Tlm

    FC

    Flight Control Subsystem

    SOC

    Spacecraft Operations Center

    RT EU Tlm

    RT GPS / AOCS Tlm

    SOP

    Spacecraft Operations Planning

    FUSS

    Foreign User Segment Services

    Orbit Files

    RT EU Tlm Files


    Aq sacd gs high rate downlink data flow l.jpg
    AQ/SACD GS High Rate Downlink Data Flow appropriate

    Nominal 16Mbps d/l path

    16Mbps downlink Xband

    observatory

    RF

    CGSS

    CONAE Ground System Services

    FGSS

    Foreign Ground System Services

    Stored Data

    FC

    Flight Control Subsystem

    SOC

    Spacecraft Operations Center

    CODS

    CONAE Orbit Dynamics Service

    Stored Data

    Stored GPS / AOCS Tlm

    SOP

    Spacecraft Operations Planning

    FUSS

    Foreign User Segment Services

    Stored Science and AQ/SACD HKT Files


    Aq gs overview i l.jpg
    AQ GS Overview I appropriate

    CODS

    CONAE Orbit Dynamics Service

    SOC

    Spacecraft Operations Center

    Emergency Voice, Email, Fax

    SOP

    Spacecraft Planning Center

    Action requests

    FUSS

    Foreign User Segment Services

    reports

    Orbit Files

    RT, Stored Data Files


    Aq gs overview ii l.jpg
    AQ GS Overview II appropriate

    CODS

    CONAE Orbit Dynamics Service

    Emergency Voice, Email, Fax

    SOC

    Spacecraft Operations Center

    Science, HKT Files

    SOP

    Spacecraft Operations Planning

    Orbit Files

    ADPP

    Aquarius Data Pre-processor

    Action requests

    CONAE

    NASA

    Science, HKT, Orbit Files

    FUSS

    reports

    ADPS

    Aquarius Data Processing System

    ACCS

    Aquarius Command and Control System

    Science, HKT Files


    Uplink interfaces data flow l.jpg
    Uplink Interfaces, Data Flow appropriate

    observatory

    RF cmds

    RF cmd ack

    SOP

    Spacecraft Operations Planning

    SOC

    Spacecraft Operations Center

    CGSS

    FC

    Flight Control

    Pass Plans

    Cmd Frames

    Pass Plans

    cmd ack

    reports

    Cmd logs

    Action requests

    CONAE

    NASA

    ACCS

    Aquarius Command and Control System

    reports


    Accs uplink tools and actions l.jpg
    ACCS Uplink Tools and Actions appropriate

    SOP

    Spacecraft Operations Planning

    • Action requests

    • commands

    • targeting

    CONAE

    NASA

    ACCS

    SInter

    Scheduler Client


    Sinter l.jpg
    SInter appropriate

    • SInter (Spacecraft Interpreter), a CONAE deliverable command scripting tool

    • SInter example script (next slide)

    • SInter used pre-flight

      • to command the instrument during I&T

      • to populate CONAE “Basic Commands” database

      • All Aquarius Basic Commands have been created and run successfully against the instrument computer (ICDS)

    • SInter used during flight against the Aquarius testbed

      • for science change scripting

      • for anomaly resolution scripting

    • Software executables and scripts are maintained under CM


    Slide62 l.jpg

    Example SInter Command Script appropriate

    scl AQ::S_FOL_mode(integer: beam)

    require

    beamValues: beam >0 && beam < 4;

    description

    -- beam_select: beam1=1, beam2=2, beam3=3

    local

    bytes : OpCode,Param,chksum;

    {

    OpCode = Integer.AsShort(24577 );

    Param = Integer.AsShort(beam );

    chksum = (OpCode^Param);

    aqsd.cmd.aq( OpCode + Param + chksum );

    }


    Scheduler client l.jpg
    Scheduler Client appropriate

    • A CONAE deliverable

    • GUI that supports Spacecraft Operations Planning

    • Resides on the ACCS

    • Interfaces with the CONAE Spacecraft Operations Planning system

      • Action Requests trigger CONAE planning activities

      • For Aquarius, these are

        • Aquarius commands

        • Aquarius Flight software patches (potential)

        • Aquarius targeting (cold sky calibration) via Observatory maneuver


    Action requests l.jpg
    Action Requests appropriate

    • Generated via the ACCS Scheduler Client (CONAE)

    • Sends to SOP via TCP/IP+HTTPS (ACCS-SOC_AR interface )

    • Checks Feasibility

    • An individual Action Request includes:

    • scl basic commands

    • command parameters

    • desired execution times

    • preconditions for execution

    • Action Requests support:

    • commands

    • flight software patch uploads

    • cold sky targeting (wide system action)


    Action requests65 l.jpg
    Action Requests appropriate

    • Generated via the ACCS Scheduler Client (CONAE)

      • sends to SOP via TCP/IP+HTTPS (ACCS-SOC_AR interface )

      • checks Feasibility

    • An individual Action Request includes:

      • scl basic commands

      • command parameters

      • desired execution times

      • preconditions for execution

    • Action Requests support:

      • commands

      • flight software patch uploads

      • cold sky targeting (wide system action)


    Command process l.jpg
    Command Process appropriate

    Example Only


    Flight software patch process l.jpg
    Flight Software Patch Process appropriate

    • Patch purpose: anomaly resolution

    • JPL responsible for designing and bench testing patch

    • ACCS responsible for operational testing against test bed

    • Science Operations Control Board approves patch activity

    • All patches are formatted as a sequence of Aquarius commands

    • Nominal Action Request process followed

    • Can be uploaded in realtime or as time-tagged cmds

    • Other commands can be interspersed

    • Aquarius provides notification of complete receipt of patch

    • Flight operations executes final “install” command in real time


    Flight software patch sequence l.jpg
    Flight Software Patch Sequence appropriate

    • I_module_start

      • identifies the component ID to be patched

      • ID inherently specifies whether patch is new or replacement s/w

      • tells the FSW how many commands make up the patch

      • Automatically aborts any patch in progress

    • I_module_part

      • One to many 60 byte commands containing patch data and a sequence number

    • I_fragment

      • One or more patch commands of 58 bytes or fewer

    • I_module_end

      • Contains patch checksum

      • Receipt causes instrument to verify all patch commands received

      • Sends messages to ground containing any missing patch sequence numbers

        • Ground may send missing data, then re-issue I_module_end

      • If all commands received, instrument computes checksum

        • Failed checksum forces discard of patch

        • “Failed” message inserted into HKT

        • Otherwise a “success” message is sent in HKT

    • I_install_patch

      • Sent in real-time once successful I_module_end is confirmed

      • Includes component ID that must match the I_module_start component ID


    Cold sky calibration process l.jpg
    Cold Sky Calibration Process appropriate

    • Primarily a CONAE task requested by the Aquarius Science team

    • Science team places request through the ACCS (TBD format)

      • Observatory targeting information provided

    • SCI-ACCS restricted access email account utilized as the interface between science team and ACCS

    • ACCS submits “Wide System Action” AR via the Scheduler Client, specifying cold sky maneuver and target.


    Downlink interfaces data flow l.jpg
    Downlink Interfaces, Data Flow appropriate

    CODS

    CONAE Orbit Dynamics Service

    SOP

    Spacecraft Operations Planning

    SOC

    Spacecraft Operations Center

    RT, Stored Data Files

    Orbit Files

    ADPP

    Aquarius Data Pre-processor

    CONAE

    NASA

    Action requests

    ADPS

    Aquarius Data Processing System

    ACCS

    Aquarius Command and Control System

    reports


    Aquarius downlink data l.jpg
    Aquarius Downlink Data appropriate

    RT, Stored Data Files

    SOC

    Spacecraft Operations Center

    Orbit Files

    ADPP

    Aquarius Data Pre-processor

    CONAE

    Observatory RT HKT files Observatory ST HKT files Aquarius Science Files, time sorted, duplicates deleted

    NASA

    Orbit Files

    Observatory RT HKT files Observatory ST HKT files Aquarius Science Files

    ACCS

    Aquarius Command and Control System

    ADPS

    Aquarius Data Processing System


    Aquarius data pre processor adpp l.jpg
    Aquarius Data Pre-processor (ADPP) appropriate

    RT, Stored Data Files

    SOC

    Spacecraft Operations Center

    Orbit Files

    ADPP

    Aquarius Data Pre-processor

    CONAE

    NASA

    ADPS

    Aquarius Data Processing System

    ACCS

    Aquarius Command and Control System


    Aquarius data pre processor adpp73 l.jpg
    Aquarius Data Pre-processor (ADPP) appropriate

    • Purpose: to reduce bandwidth requirement

      • Unable to test the actual link until new MOC is installed

      • Initial testing provides baseline but no sure metrics

    • Two ADPP systems placed at CONAE

      • Incoming data archived to both

      • Data fetched by ADPS from only primary ADPP

      • Configuration and scripting controlled by Goddard

      • Physical maintenance (if any) performed by CONAE

      • Sized to accommodate the entire mission, all file types, with margin

    • ADPP retrieves orbit files from CODS

      • SFTP “pull”

    • Retrieves Real time Observatory HKT files from SOC

      • SFTP “pull”

      • 4000 byte frames sent via S-band link

      • Frames contain SACD, Aquarius, and other instrument HKT

    • Retrieves Stored Observatory HKT files from SOC

    • Retrieves Aquarius science files from SOC

      • Time sorts data

      • Deletes duplicates


    Aquarius data processing system l.jpg
    Aquarius Data Processing System appropriate

    RT, Stored Data Files

    SOC

    Spacecraft Operations Center

    Orbit Files

    ADPP

    Aquarius Data Pre-processor

    CONAE

    NASA

    ACCS

    Telemetry Viewer

    ADPS

    Aquarius Data Processing System

    Analysis Software


    Aquarius data processing system75 l.jpg
    Aquarius Data Processing System appropriate

    • Part of the Ocean Biology Processing System

    • ADPS support for the ACCS includes:

      • Archive of all mission data including all HKT, science and orbit files

      • Forwards HKT files to the ACCS Telemetry Viewer tool

        • Sole source of Aquarius software messages

        • Duplicates HKT stored in science files, but at lower sampling rate

      • Provides science and HKT file access to the Aquarius analysis tools


    Accs telemetry viewer l.jpg
    ACCS Telemetry Viewer appropriate

    RT, Stored Data Files

    SOC

    Spacecraft Operations Center

    Orbit Files

    ADPP

    Aquarius Data Pre-processor

    CONAE

    NASA

    ACCS

    Telemetry Viewer

    ADPS

    Aquarius Data Processing System

    Analysis Software


    Accs telemetry viewer77 l.jpg
    ACCS Telemetry Viewer appropriate

    • CONAE deliverable

    • Purpose is to:

      • Be able to provide Aquarius telemetry viewing tools to CONAE

      • Be able to view data exactly as CONAE does to support discussion of observations, anomaly diagnosis and resolution, etc.


    Slide78 l.jpg

    Example Telemetry Viewer Script appropriate

    tsl Tlmy::AQ.EXT_Temps_OMT1_Hprobe_Temp.Raw()

    return bytes : out

    label

    -- AQ.EXT_Temps_OMT1_Hprobe_Temp.Raw

    require

    -- The script can be executed if a new 'AQ.Mechanical_Thermal.Message' arrived.

    MessageArrived: AQ.Mechanical_Thermal.Message != <hex\ >;

    description

    -- raw AQ.EXT_Temps_OMT1_Hprobe_Temp

    {

    out = bytes.extract(AQ.Mechanical_Thermal.Message, 0,1);

    }

    (Show file)


    Accs analysis software l.jpg
    ACCS Analysis Software appropriate

    RT, Stored Data Files

    SOC

    Spacecraft Operations Center

    Orbit Files

    ADPP

    Aquarius Data Pre-processor

    CONAE

    NASA

    ACCS

    Telemetry Viewer

    ADPS

    Aquarius Data Processing System

    Analysis Software


    Accs analysis software80 l.jpg
    ACCS Analysis Software appropriate

    • Based on the Radiometer FM I&T Analysis tools developed at Goddard

    • Development plan:

      • Expand tools to include remaining instrument data

      • Convert tools from Windows to Linux OS

      • Investigating whether to convert tools from Matlab to IDL

      • Include processing capability for HKT and ancillary data

      • Mimic existing Ocean Biology web tools: Generate daily and long-term graphs; investigate creating mid-resolution graphs

      • Post graphs to the Web via existing Ocean Biology tools

      • Provide existing interactive capability from local machine(s)


    Accs hardware and link analyses l.jpg
    ACCS Hardware and Link Analyses appropriate

    • Analysis showed that the following requirements apply to the ACCS computer:

      • Ultra-secure network connections to CONAE and the ADPS (Windows OS)

      • Disk storage: 64 MB

        • Executables

        • Command and telemetry scripts, pages (custom elements)

        • Working files (playback data)

        • Applies 100% margin

      • RAM: 250 MB

        • Assessed by examining handle, thread, and process statistics with tools in use, especially at start-up

        • Extracted from basis of test computer providing 504 MB RAM

      • Processing speed: 1.5 GHz

        • Assessed by examining CPU usage statistics while tools were active, especially at start-up

        • Tools were run on 1.5 GHz processor and demonstrated startup usage of 33% and post-start-up of 8% or less

    • Specifications of existing ACCS hardware:

      • Disk storage: 255 GB

      • RAM: 2 GB

      • Processing speed: 3.01 GHz

    • Link test results with CONAE

      • 10 day link test; SAC-C vs. SAC-D link

      • 87% success rate; transfers also under 12 minutes for 550 MB file (approx AQ fileset size)

      • 15% of total transferred but with very slow rates (~ 2 – 3 hours)

      • ADPP employed to increase margin

      • Examining alternate network options

      • True testing delayed until MOC upgrade in 2008


    Aquarius test bed l.jpg

    Aquarius Test Bed appropriate


    Aquarius test bed requirements l.jpg
    Aquarius Test Bed Requirements appropriate

    • Information: The AQ Flight Operations Testbed is a tool to investigate and recover from AQ anomalies, test unapproved command sequences and operations procedures, and validate FSW code uploads

    • Requirement: All elements of the AQ flight instrument shall be replicated or simulated within the AQ Testbed

    • Requirement: All elements of the AQ Testbed shall provide flight like telemetry and science responses to commands.

    • Requirement: The ADPU element shall provide flight-like power levels to the Testbed.

    • Requirement: The ICDS element shall provide flight-like Scatterometer science processing, ATC control, DPU communications, ground command handling, FSW upload capability, HKT handling and science packet handling.

    • Requirement: The Testbed command and telemetry tools shall be identical to the Operational tools.

    • Requirement: The Testbed command and telemetry tools shall interface with the AQ instrument via a SAC-D simulator.

    • Information: The SAC-D simulator emulates the SAC-D Command and Data Handling System, the 1553 bus, the GPS 1PPS signal and interfaces to both the SAC-D command and telemetry tools and the AQ instrument portion of the Testbed.


    Slide84 l.jpg

    Command and Data Test-bed appropriate

    Aquarius Command and Data Test-bed

    (at GSFE after commissioning phase is complete. Before that: at JPL)

    SAC-D Cmd/Tlm Tools

    S/P Simulator

    • The main goal of the Command and Data Test-bed is to verify commands are scripted correctly to be accepted by the instrument and echoed back properly in telemetry.

    • If possible, EM DPU will be used instead of DPU simulator. This would interconnect the two test beds segments shown here.

    • If a FSW patch is needed, it will be tested in a software test-bed first and then in the Command and Data Test-bed.

    1553 sniffer

    1553

    Cmds/

    HKTs

    1pps

    High-rate data downlink sync and storage

    4Mbps

    High-rate data

    Cmds/timing

    ICDS full BB

    DPU interface

    Simulator

    Sci/telem

    sADC

    Command/TLM/High-rate data software tools

    cmds

    SCAT interface

    Simulator

    telem

    Generic Reference clock and power supplies

    Thermal/deployment telemetry Simulator

    Radiometer Engineering Test-bed (at GSFC)

    Radiometer RF EMs:

    RBE

    RFE

    CND

    Cmds/timing

    Cmds/timing

    ICDS

    Simulator

    BCE & PC

    DPU

    (EM)

    HKT

    Sci/telem

    science


    Test bed limitations l.jpg
    Test Bed Limitations appropriate

    • Ideal test bed perfectly replicates Observatory and space environment

    • Limitations

      • No vacuum, no radiation, no orbital variations, no seasonal variations simulated

      • Only Radiometer offers some thermally controlled elements

      • Aquarius and Observatory testbeds are not interconnected

      • Aquarius provides no antenna, feed, or structure elements

      • Scatterometer breadboard is not included

      • Going in plan does not integrate Radiometer and ICDS elements

      • Radiometer is single (vs. triple) string and DPU is EM, not FM version

      • Radiometer FM hardware updates not applied to EM

      • Aquarius Power Distribution Unit is entirely replaced by power supplies

      • No temperature sensors or support software included in the Automatic Thermal Control portion of the test bed


    Test bed capabilities l.jpg
    Test Bed Capabilities appropriate

    • Capabilities

      • ICDS test bed provides

        • Full Scatterometer processing

        • Scatterometer simulator for RF elements is included

        • Full flight-like command and telemetry response, although with nearly all simulated inputs and feedback

      • Radiometer test bed provides

        • Limited RF targets may be available

        • DPU software updates to match FM may be possible; to be investigated

        • Investigating the integration of the ICDS and Radiometer test bed elements

      • If Radiometer EM integration is successful

        • inputs and feedback will be very flight-like, within stated limitations


    Accs test plan l.jpg

    ACCS Test Plan appropriate


    Accs test plan88 l.jpg
    ACCS Test Plan appropriate

    • Purpose:

      • Verify the Aquarius Ground System Level 3 Requirements

      • Describe the plan for integrating and testing Aquarius Ground System segments

      • Describe the plan for integrating and testing the Aquarius Ground System with the SACD Ground System

      • Describe the training plan for Aquarius Ground System operators.

    • Test approach

      • Ensure that AQ GS test objectives are met in a twofold fashion.

        • Perform standard component and system level tests that verify Level 3 requirements. (Verification)

        • Simulate full operations on a daily basis for at least oneyear prior to launch. (Validation) This extensive testing will support:

          • Stressing the system

          • rehearsing anomaly detection and response

          • iterative optimization of science data processing algorithms.


    Test process l.jpg
    Test Process appropriate

    • Analyze Level 3 requirements that will be verified and then map them into test categories.

    • Develop the Test Cases including test procedures.

    • Conduct peer review of Test Cases and Test Procedures.

    • Prepare for tests:

      • Verify that the pertinent subsystem tests have been completed successfully

      • Verify that the appropriate test data is prepared. Generate if necessary.

    • Coordinate and execute testing for each major AQ GS component including relevant regression testing.

    • Test execution takes place on the day of the test and includes:

      • Verification of participants, locations, test preparations, etc.

      • Startup procedures

      • Execution of the Test (step-by-step)

      • Close-down procedures

    • Debriefing: review and document test results and anomalies


    Full ground system test list l.jpg
    Full Ground System Test List appropriate

    • Segment Tests:

    • ACCS Acceptance Test

    • ADPP Acceptance Test

    • ACCS-ADPS Interface Test

    • ADPP-ADPS Interface Test

    • ADPS Level 0 to 1A Processing Test

    • ADPS Level 1 Algorithm Test

    • ADPS Level 2 Algorithm Test

    • ADPS Level 3 Algorithm Test

    • ADPS Retrieval, Scheduling and Archiving Test

    • SACD SOC-ADPP-ADPS File Exchange Tests

    • ACCS Command and telemetry verification (against test-bed)

    • ACCS Script verification (against test-bed)

    • Ocean Biology Processing Web Based Telemetry Tools Test

    • PO.DAAC interface test

    • ADPS – AVDS interface test

    • System Tests:

    • SACD MOC-ADPP-ADPS-ACCS End to End Test

    • Mission Scenarios/Operational Readiness Test with CONAE

    • Mission End to End Test

      Tests involving the ACCS


    Ground system end to end test setup l.jpg
    Ground System End to End Test Setup appropriate

    • SACD MOC-ADPP-ADPS-ACCS End to End Test configuration is identical to flight

    • This configuration will be presented in detail later in this slide set


    Operational readiness test system configuration l.jpg
    Operational Readiness Test System Configuration appropriate

    • Replaces the Observatory with the Observatory Test Bed

    • Observatory Test Bed is housed at the CONAE ground station

    • Test Bed is controlled and monitored locally vs via the Flight Control system

    • Command and Data files must be manually transferred to and from Aquarius Ground System

    • This is adequate for Aquarius Ground System purposes in that we have no real-time control of Aquarius



    Accs training plan l.jpg
    ACCS Training Plan appropriate

    • Aquarius Science, Instrument and Ground System Overview

      • In-house document that describes the mission elements from an operations perspective

    • ACCS User's Guide

      • Generally an assembly of CONAE deliverables

      • Supplemented by in-house training information

    • Aquarius Operations Handbook

      • Policies, Processes and Procedures

    • Mission Scenarios

      • Participation for operators already on board

      • Documented results for operators hired afterward

    • Aquarius Test-Bed

      • Training scenarios

    • Certification


    Accs schedule l.jpg
    ACCS Schedule appropriate


    Accs risks l.jpg

    ACCS Risks appropriate


    Accs risks97 l.jpg
    ACCS Risks appropriate

    • Impacts of CONAE MOC redesign

      • AQ GS – SAC-D GS testing delayed until Feb ’09

      • Any needed redesign and retest likewise delayed

      • Mitigation: Fall back to SAC-C design

    • Effectiveness of the Aquarius Test Bed for Analyzing and Resolving Anomalies

      • Lack of total interconnectivity of elements (including Observatory test bed)

      • Limited ability to simulate thermal environment and sensing for a very thermally sensitive instrument

      • Mitigation: Risk is being accepted by the project


    Acronym list l.jpg

    Acronym List appropriate


    Acronym list a e l.jpg
    Acronym List, A - E appropriate

    ACCS Aquarius Command and Control System

    ADC Analog to Digital Converter

    ADPP Aquarius Data Pre-Processor

    ADPS Aquarius Data Processing System

    AOCS Attitude and Orbit Control System (Observatory)

    APDU Aquarius Power Distribution Unit

    AQ Aquarius

    AQ GS Aquarius Ground System

    AR Action Request

    ASI Agenzia Spaziale Italiana

    ATC Automatic Thermal Control

    BB Breadboard

    BCE Board Control Electronics

    CCSDS Consultative Committee for Space Data Systems

    CM Configuration Management

    CGSS CONAE Ground System Services

    CND Correlated Noise Diode

    CODS CONAE Orbit Determination System

    CONAE Comision National de Actividades Espaciales

    CPU Central Processing Unit

    CUGSS CONAE User Ground System Services

    CUSS CONAE User Segment Services

    DeltaV Delta Velocity – an in-track orbit adjustment maneuver

    d/l downlink, download

    DPU Digital Processing Unit (Radiometer)

    EM Engineering Model

    ETC Estacion Tierra Cordoba (CONAE Ground Station in Cordoba, Argentina)


    Acronym list f n l.jpg
    Acronym List, F - N appropriate

    FC Flight Control (CONAE)

    FGSS Foreign Ground System Services (CONAE)

    FM Flight Model

    FSW Flight Software

    FUSS Foreign User Segment Services (CONAE ground system acronym)

    GHz Gigahertz

    GPS Global Positioning System

    GS GroundSystem

    GSE Ground System Equipment

    HKT Housekeeping Telemetry

    HKTM Housekeeping Telemetry

    ICDS Instrument Command and Data System

    IT Information Technology

    I&T Integration and Test

    Kbps Kilobits per second

    Km Kilometer

    JPL Jet Propulsion Laboratory (Aquarius Project Management and instrument subsystem provider)

    LVPS Low Voltage Power Supply

    LUT Look Up Table (Radiometer)

    MB Megabytes

    Mbps Megabits per second

    MOC Mission Operations Center (CONAE ground system acronym)

    MOM Mission Operations Manager (a CONAE position)

    NASA National Aeronautics and Space Agency

    NGN NASA Ground Network


    Acronym list o z l.jpg
    Acronym List, O - Z appropriate

    OMT Ortho Mode Transducer

    ORT Operations Readiness Test

    ORR Operations Readiness Review

    OS Operating System

    PC Personal Computer

    PPS Pulse Per Second

    PSU Practical Salinity Units

    RAM Random Access Memory

    RBE Radiometer Back End

    RFE Radiometer Front End

    RMS Root-Mean-Squared

    RF Radio Frequency

    RT Real time

    SACD Satelite Argentina Cientifica – D

    SBE Scatterometer Back End

    SFE Scatterometer Front End

    SFTP Secure File Transfer Protocol

    SInter Spacecraft Interpreter

    SOC Spacecraft Operations Control

    SOCB Science Operations Control Board

    SOP Spacecraft Operations Planning (system)

    SP Service Platform (generic term for SAC-D)

    ST Stored (data)

    TC Telecommand

    TCP/IP Transfer Control Protocol/Internet Protocol


    Backup slides l.jpg

    Backup Slides appropriate


    Slide103 l.jpg

    Engineering Test-beds appropriate

    Radiometer Engineering Test-bed (at GSFC)

    Radiometer RF EMs:

    RBE

    RFE

    CND

    Cmds/timing

    Cmds/timing

    ICDS

    Simulator

    BCE & PC

    DPU

    (EM)

    HKT

    Sci/telem

    • Engineering test-beds stay with the cognizant engineers (at GSFC and at JPL) to investigate functional/performance issues.

    science

    Scatterometer Engineering Test-bed (at JPL)

    LVPS EGSE (DCCP)

    Scat RF BBs:SBE, SCG, SFE, LVPS, RF-deck, Diplexer, coupler

    APDU slice 4 EM

    ICDS simulator or ICDS-BB2

    Antenna Test-bed (at JPL)

    Standard test/measurement equipment

    EM feed/OMT

    Flight Software Test-bed (at JPL)

    RAD6K BB

    ATC engineering Test-bed (at JPL)

    APDU Engineering Test-bed (at JPL)

    ATC Heater modules BB

    APDU

    Slice 2 EM

    APDU slice2 BCE

    APDU slice 1 EM

    ATC controller BB

    Thermal Modeling Test-bed (ASL/JPL)

    APDU

    Slice 3 EM

    APDU slice3 BCE

    Aquarius thermal models for analysis and simulations

    ATC BCE and Labview

    APDU

    Slice 5 EM

    APDU slice5 BCE


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