U.S. Presentations from
International Committee on GNSS Meeting
September 4-7, 2007

The following presentations were delivered as Expert Lectures by members of the U.S. delegation to the International Committee on GNSS (ICG) during its second meeting in Bangalore, India.

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GPS Timekeeping

Jules McNeff on behalf of Kenneth Johnston, U.S. Naval Observatory

This presentation provides an overview of GPS contributions to Universal Coordinated Time (UTC) and to global time management.

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2 MB

Tropospheric Modeling

Seth Gutman, National Oceanic and Atmospheric Administration

This presentation describes the effects of the Earth's atmosphere, particularly the troposphere, on GPS accuracy, and various methods used to mitigate these effects.

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1 MB

Space Weather Effects on GPS

Tom Bogdan, National Oceanic and Atmospheric Administration

This presentation describes the effects of space weather phenomena on GPS and ongoing efforts to model the ionosphere.

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Compatibility and Interoperability

Tom Stansell, representing Air Force GPS Wing

This presentation describes how the U.S. defines and analyzes compatibility/interoperability between GPS and other systems.

The following presentation was delivered by the U.S. delegation at the Providers Forum prior to the ICG plenary session.

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10 MB

United States Global Positioning System (GPS) and Augmentation Systems Update

Michael Shaw, Jules McNeff, Carlos Rodriguez, Tom Stansell, David Turner & Gene Schlechte

This presentation provides a comprehensive overview of U.S. services and provision policies, GPS and WAAS/LAAS system descriptions, perspective on compatibility and interoperability, and spectrum protection activities.

The following reports were released upon the conclusion of the ICG meeting.

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