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GPS Status & Modernization Briefing to National PNT Advisory Board 29 March 2007. Col Allan Ballenger Commander, GPS Wing. Overview. GPS System Description GPS Constellation Status & Availability Recent GPS Accomplishments GPS Modernization Summary.

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Gps status modernization briefing to national pnt advisory board 29 march 2007

GPS Status & Modernization

Briefing to National

PNT Advisory Board

29 March 2007

Col Allan Ballenger

Commander, GPS Wing


Overview
Overview

  • GPS System Description

  • GPS Constellation Status & Availability

  • Recent GPS Accomplishments

  • GPS Modernization

  • Summary

Department of Defense and Air Force are committedto responsible stewardship of GPS as a global utility



Gps status modernization briefing to national pnt advisory board 29 march 2007

GPS System DescriptionGPS Enterprise

  • International Cooperation

  • Japan – QZSS

  • Russia - GLONASS

  • Europe and other countries

  • Department of Defense

  • Services (Army, Navy, AF, Marines)

  • Agencies (NGA, DISA, etc.)

  • Civil Applications

  • Search and rescue

  • Surveying and mapping

  • Trucking, shipping and Aviation

  • Banking and Finance

  • Offshore drilling

  • Fishing and boating

  • Department of Transportation

    • Federal Aviation Administration (FAA)

  • Department of Homeland Security

    • Coast Guard


Gps status modernization briefing to national pnt advisory board 29 march 2007

GPS System DescriptionWhat Are the GPS Segments?


Gps status modernization briefing to national pnt advisory board 29 march 2007

GPS Constellation Status & Availabilityas of March 2007

  • 16 Block IIA satellites operational

  • 12 Block IIR satellites operational

  • 3 Block IIR-M satellites operational

    • 5 additional IIR-M satellites to launch

  • Since Dec 93, U.S. Government met/exceeded civil GPS service performance commitments

    • SPS Performance Standard (PS)

  • U.S. DoD committed to superior GPS service

30 Healthy Satellites

Baseline Constellation: 24

as of 26 Mar 07


Gps constellation status availability growing to 30 satellites
GPS Constellation Status & AvailabilityGrowing to 30+ Satellites

  • IIR-15(M) launched: Monday, 25 Sep 06

    • Set healthy: Thursday, 12 Oct 06, SVN 52 - PRN 31

    • 17 days from launch to on-orbit ops

  • IIR-16(M) launched: Friday, 17 Nov 06

    • Set healthy: 13 Dec 06, SVN 58 - PRN 12

  • PRNs 12 & 32 return to ops –allows growth to 32 SV constellation

  • Larger constellation for improved availability & accuracy

PRN – Pseudo Random Noise (spreading code)

SVN – Space Vehicle Number


Gps status modernization briefing to national pnt advisory board 29 march 2007

Recent GPS Accomplishments

  • Launched a new era of GPS services

    • First GPS IIR-M (14) launched 25 Sep 05, operational 16 Dec 05

    • New military signal (M-Code) and new civil signal (L2C)

    • GPS IIR-M (15) launched 25 Sep 06; IIR-16(M) launched 17 Nov 06

  • Fielded operational improvements

    • Legacy Accuracy Improvement Initiative –improves position accuracy over 10%

    • Provide “zero age of data” to warfighters

    • Delivered 100,000+ DAGRs, 250,000+ SAASMs

  • OSD/NII signed Precise Positioning Service Performance Standard,23 Feb 07 – enables certification of military GPS use in US airspace

  • New acquisition strategies for next generation GPS

    • “Back to Basics” and incremental block approach

      • GPS Block III satellites

      • GPS Block III Next-Generation Control Segment (OCX)

      • Modernized User Equipment/Modernized Space Receiver


Gps status modernization briefing to national pnt advisory board 29 march 2007

Recent GPS AccomplishmentsOur Mission Successes

GPS IIR-14(M)

25 Sep 05

1st Modernized

GPS Satellite

GPS IIR-13

6 Nov 04

GPS IIR-15(M)

25 Sep 06

GPS IIR-16(M)

17 Nov 06

A world class team providing worldwide position, navigation & timing!


Gps status modernization briefing to national pnt advisory board 29 march 2007

Accuracy

Current Requirement

Current Objective

Recent GPS Accomplishments Continuous Performance Improvement

  • Key Measures of Effectiveness help evaluate GPS services

    • Accuracy

    • Bounded inaccuracy

    • Assured Availability

    • Integrity

    • Resistance to RF Interference/Jamming


Gps status modernization briefing to national pnt advisory board 29 march 2007

Recent GPS AccomplishmentsLeveraging Civil/Commercial Technology


Gps status modernization briefing to national pnt advisory board 29 march 2007

GPS ModernizationCapability Evolution

Space Segment

  • Modernized(Block IIR-M)

  • 2nd civil signal (L2C)

  • M-Code signals (L1M, L2M)

  • Flex A/J power (+7dB)

  • Modernized(Block IIF)

  • 3rd civil signal (L5)

GPS III(Block III)

  • Increased accuracy

  • Increased A/J power(up to 20 dB)

  • Signal integrity

  • Search and Rescue

  • Common signals with Galileo (L1C)

  • Legacy(Block IIA/IIR)

  • Basic GPS

  • C/A civil signal (L1C/A)

  • Std Pos. Service

  • Precise Pos. Service

    • L1 & L2 P(Y) nav

  • NDS

Control Segment

Legacy

  • TT&C

  • L1 & L2 monitoring

Upgraded(AEP)

  • IIR-M IIF TT&C

  • WAGE, AII, LADO

  • SAASM

  • New MCS/AMCS

Modernized(OCX V1)

  • New Architecture

  • Signal Monitoring

GPS III(OCX V2)

  • GPS III TT&C

  • NAVWAR, GNOC

  • L1C, L2C, L5

  • Flex Power

  • Real-Time C2

User Segment

Legacy

  • Man Pack

  • MAGR, PLGR

  • RCVR-3A, 3S

  • OH, UH

  • FRPA, CRPA

Upgraded

  • DAGR

  • CSEL

Modernized

  • MUE

  • MSR

  • GAS-1

  • MAGR2K

  • GB-GRAM


Gps status modernization briefing to national pnt advisory board 29 march 2007

Summary

  • Sustaining capabilities for military and civil users worldwide

    • Maintain ground systems/on-orbit satellites, launch new satellites

    • Fielding GPS enhancements, such as Legacy Accuracy Improvement

  • Modernizing constellation with new signals and capabilities

    • First IIR-M launch Sep 05, first IIF launch 2008, first III launch 2013

    • New civil and military GPS signals

    • Transitioning control segment from legacy to new architecture/systemby Summer ‘07

    • Continuing work with Galileo and international community

  • Developing next generation of GPS

    • Acquisition strategies for space, ground, and user segments

    • Synchronizing space, control, and user equipment upgrades

    • “Back to Basics” focus and incremental block approach

  • ManagingGPS systems & supporting stakeholders

    • Technical baselines, interfaces, performance

    • Supporting/participating in key fora – NPEC/NPCO, DSB, IRT, PNT FACA

Department of Defense and Air Force are committed to responsible stewardship of GPS as a global utility