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Pre-Launch Testing of GPS Receivers for Geodetic Space MissionsThe methodology used and the results obtained in the pre-flight testing of the Blackjack Global Positioning System (GPS) space receiver for the Vegetation Canopy Lidar Mission (VCL) and the Ice, Cloud, and Land Elevation Satellite (ICESat) spacecraft is described. Both real and simulated signals were used to: (1) assess the accuracy and coverage of the navigation solutions, (2) assess the accuracy and stability of the 1-PPS timing signal, (3) assess the precision of the carrier phase observable, and (4) measure the cold-start time to first fix. In addition, an anechoic chamber was used to measure the antenna phase centers with millimeter-level precision. While the test results have generally been excellent and are discussed in this paper, emphasis is placed on describing the test methodology. It is anticipated that future geodetic satellite missions using GPS for navigation, timing, and precise orbit determination (POD) can employ the same tests for pre-launch performance assessment of their particular receiver.
Document ID
20000114826
Document Type
Preprint (Draft being sent to journal)
Authors
Davis, George (Orbital Sciences Corp. Greenbelt, MD United States)
Davis, Edward (NASA Goddard Space Flight Center Greenbelt, MD United States)
Luthcke, Scott (Raytheon Information Technology and Scientific Services Greenbelt, MD United States)
Hawkins, Kimberly (Hammers Co. Greenbelt, MD United States)
Bauer, Frank
Date Acquired
September 7, 2013
Publication Date
January 1, 2000
Subject Category
Composite Materials
Meeting Information
Global Positioning Systems(Salt Lake City, NV)
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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