U s space based positioning navigation and timing program policy and international cooperation
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U.S. Space-Based Positioning, Navigation, and Timing Program, Policy and International Cooperation. Location India 2008 New Delhi, India February 6-8, 2008. Robert Ford, Senior Advisor Office of Space and Advanced Technology Bureau of Oceans, Environment and Science U.S. State Department.

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U s space based positioning navigation and timing program policy and international cooperation

U.S. Space-Based Positioning, Navigation, and Timing Program, Policy and International Cooperation

Location India 2008

New Delhi, India

February 6-8, 2008

Robert Ford, Senior Advisor

Office of Space and Advanced Technology

Bureau of Oceans, Environment and Science

U.S. State Department


Introduction

Introduction

  • Like the Internet, GPS has become a critical component of the global information infrastructure

    • Scalable applications enabling broad new capabilities

    • Facilitating innovations in efficiency, safety, environmental, public security, and science

  • Over the past decade, GPS has grown into a global utility providing space-based positioning, navigation and timing (PNT)

    • Consistent, predictable, dependable policy and performance

    • Augmentations improve performance even further


Overview

Overview

  • Current GPS Program and Augmentations

  • Modernization Plans

  • National Space-Based PNT Policy

  • International Cooperation

  • Summary


Current constellation

Current Constellation

30 Operational Satellites

(Baseline Constellation: 24)

  • 13 Block IIA satellites operational

  • 12 Block IIR satellites operational

    • Modernizing 5 remaining Block IIR satellites

  • 5 Block IIR-M satellites operational

    • Transmitting new second civil signal (L2C)

  • Continuously assessing constellation health to determine launch needs

  • Global GPS civil service performance commitment met continuously since 1993


International augmentations

Differential GPS Networks

Space-Based Augmentation Systems

Global Differential GPS System

International GNSS Service

International Augmentations


Gps constellation delivering excellent performance

GPS constellation –Delivering excellent performance

Standard

Performance Improving


Gps modernization

GPS Modernization

  • System-wide improvements in:

    • Accuracy

    • Availability

    • Integrity

    • Reliability

  • Backward compatibility

  • Robustness against interference

  • Improved indoor, mobile, and urban use

  • Interoperability with other GNSS constellations


Gps iii satellites civil signals

GPS III Satellites & Civil Signals

  • Next-generation satellite needed to accommodate increasing power requirements

    • Development approach to reduce risk, increase flexibility

    • Separate contracts for space and ground segments

    • Acquisition processes for control segment /satellite are underway

      • OCX Request for Proposal Released; contract awarded on Nov 23 07

      • GPS IIIA Request for Proposal Released

  • Civil benefits

    • Provides operational capability for second (L2C) and third (L5) civil signals

      • In combination with GPS IIR-M and IIF satellites

    • Delivers L1C for interoperability with Galileo

    • Significant increase in system accuracy

    • Improved availability of accuracy with integrity


United states policy history

United States Policy History

  • 1983: President Reagan offers free civilian access to GPS

  • 1996: President Clinton issues first U.S. GPS policy

    • Designates GPS a dual-use system under joint civil/military management

  • 1997: Congress passes law requiring civil GPS to be provided free of direct user fees

  • 2004: President Bush issues U.S. policy on space-based PNT


2004 u s space based pnt policy

2004 U.S. Space-Based PNT Policy

Updated policy retains 1996 principles

  • Recognizes the changing international scene

    • Other nations implementing space-based systems that provide PNT services

  • National Space-Based PNT Executive Committee

    • Chaired by Deputy Secretaries of Defense and Transportation

    • Membership includes: State, Commerce, Homeland Security, Interior, Joint Chief of Staffs, and NASA

  • Established National Coordination Office (NCO) with staff from each member agency


National space based pnt organizational structure

Defense

Transportation

State

NATIONALEXECUTIVE COMMITTEEFOR SPACE-BASED PNT

Executive Steering Group

Co-Chairs: Defense, Transportation

ADVISORY BOARD

Sponsor: NASA

Commerce

Homeland Security

Interior

NATIONAL COORDINATION OFFICE

Host: Commerce

Joint Chiefs of Staff

NASA

National Space-Based PNT Organizational Structure

WHITE HOUSE

WHITE HOUSE

Defense

Transportation

NATIONALSPACE-BASED PNT EXECUTIVE COMMITTEE

Co-Chairs: Defense, Transportation

State

ADVISORYBOARD

Sponsor: NASA

Commerce

Homeland Security

Joint Chiefs of Staff

NATIONAL

COORDINATIONOFFICE

Host: Commerce

NASA


U s department agency activities

U.S. Department & Agency Activities

  • PNT Executive Committee meets regularly

  • International Coordination and Cooperation – State

    • Accelerating bilateral and multilateral activities

  • Interference Detection and Mitigation Plan – DHS

  • DOD and DOT PNT Architecture for 2025

  • DOD Selective Availability (SA)

    • SA feature was used in the past to intentionally degrade civilian GPS service; implemented in 1995 but not used outside tests/exercises, discontinued in May 2000

    • GPS III satellites will NOT include SAT capability

    • Decision announced at 36th ICAO Assembly Sep. 2007


National coordination office nco

National Coordination Office (NCO)

  • Facilitates information sharing, coordination, and issue resolution regarding space-based PNT across all Departments

  • Facilitates coordination among Agencies re: plans to modernize U.S. space-based PNT infrastructure

  • Conducts or oversees space-based PNT studies, analyses, and projects that have broad U.S. Government participation

  • Represents Executive Committee in discussion with state and local entities, foreign governments, and international organizations


Advisory board

Advisory Board

  • Conducts assessments & makes recommendations to the ExCom in support of national policy goals and objectives related to space-based PNT

  • Focuses on leadership, strategic engagement and communication, and future challenges

  • Twenty-four members; 6 international members; meets twice a year since March 2007


U s national space based positioning navigation and timing policy objectives

Provide civil GPS and augmentations free of direct user fees on a continuous, worldwide basis .

Improve capabilities to prevent hostile use of space-based PNT services to protect the mutual security concerns of the U.S. and its allies.

Improve performance of civil GPS and augmentations to meet or exceed that of international systems.

Maintain GPS as a component of multiple sectors of U.S critical infrastructure.

Encourage international development of PNT systems based on GPS - seek to ensure international systems are interoperable, or at a minimum, compatible with civil GPS and its augmentations.

U.S. National Space-Based Positioning, Navigation and Timing Policy – Objectives


Bilateral gps cooperation

Bilateral GPS Cooperation

  • U.S.-EU: GPS-Galileo Cooperation Agreement of 2004

    • Established four Work Groups

    • July 2007 accord on improved civil signal (MBOC)

  • U.S.-India: Expanded cooperation since 2004 under Next Steps in Strategic Partnership and new Joint Working Group on Civil Space Cooperation

    • Joint Statement on GNSS Cooperation adopted at second Joint Working Group meeting, February 2007, text available at http://www.state.gov/g/oes/rls/or/81450.htm

    • Several meetings held between U.S. and Indian experts on compatibility, interoperability and spectrum coordination, including technical meetings last week in Bangalore

    • Research into ionospheric distortion/solutions


Bilateral gps cooperation c0nt d

Bilateral GPS Cooperation (C0nt’d)

  • U.S.-Russia: Negotiating GPS-GLONASS Cooperation Agreement since 2005

    • Discussing greater interoperability of civil GPS-GLONASS signals

    • Russia WG-1 chair prop0sed adopting two new civil CDMA signals at L1, L5, interoperable with GPS

  • U.S.-Japan: Policy and technical consultations on GPS cooperation since 1996

    - QZSS design to be compatible, interoperable with GPS

    - Working to establish QZSS monitoring stations in Hawaii/Guam


Other international activities

Other International Activities

  • U.S. held GPS bilateral consultations with Australia, Poland, Hungary, Czech Republic, South Africa, and others

  • Continuing interest in GPS-related issues that arise in multilateral organizations (ITU, ICAO, IMO, NATO, etc)

  • Influenced APEC/GNSS Implementation Team to broaden GNSS applications in all modes of transportation and beyond

  • International Committee on GNSS (ICG) will help us broaden the dialogue among users and developers


International committee on gnss icg

International Committee on GNSS (ICG)

  • Emerged from 3rd UN Conference on the Exploration and Peaceful Uses of Outer Space July 1999

  • Promote the use of GNSS and its integration into infrastructures, particular in developing countries

  • Encourage compatibility and interoperability among global and regional systems

  • Unique mix of GNSS providers (US, EU, Russia, China Japan, India) and international user groups to address common issues, e.g. reference frame, orbital debris


Icg continued

ICG (Continued)

  • Exchange Views on ICG Work Plan by Work Groups

    • A. Interoperability and compatibility

    • B. Enhancement of Performance of GNSS Services

    • C. Information dissemination, education, outreach & coordination

    • D. Interaction with monitoring and reference station network orgs.

  • First Providers Forum and ICG-2 held in India September 2007

    • Providers agreed on interoperability and compatibility terms including spectral separation between each system’s authorized service signals and other system’s signals

    • China requested to be recognized as a GNSS Provider

  • U.S. to host ICG-3 in Pasadena, Cal. December 8-12, 2008

As new space-based GNSS emerges globally, interoperability is the key to “success for all”


Summary

Summary

  • GPS performance is getting better and continuing to improve

    • Augmentations enable high performance today

    • Second new GPS signal now available

    • No Selective Availability features in GPS III

  • U.S. Space-Based PNT Policy continues to provide stability and transparency for users and industry

    • Encourages/promotes worldwide use of civil GPS and augmentations

  • U.S. Govt management structure for GPS and augmentations is stronger and more active

    • Many policy implementation actions in progress

  • International cooperation is a U.S. top priority


Contact information

Contact Information

Robert J. Ford

Senior Advisor

U.S. State Department

OES/SAT, SA-23 Suite 410

Washington, D.C. 20520

Ph: (202) 663-2673

Fax: (202) 663-2402

[email protected]


Web based information

Web-based Information

  • PNT.gov established to disseminate information on the U.S. National Executive Committee

    • Information on the U.S. National Policy, Exec Committee membership, the Advisory Board, and frequently asked questions

    • Recent public presentations to include this presentation

  • GPS.gov established to disseminate information on GPS applications

    • Brochure on GPS applications also available in hardcopy upon request

    • Contains additional links to various other websites


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