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Gravity Probe B orbit determination
- Source :
- Classical and Quantum Gravity. 32:224017
- Publication Year :
- 2015
- Publisher :
- IOP Publishing, 2015.
-
Abstract
- The Gravity Probe B (GP-B) satellite was equipped with a pair of redundant Global Positioning System (GPS) receivers used to provide navigation solutions for real-time and post-processed orbit determination (OD), as well as to establish the relation between vehicle time and coordinated universal time. The receivers performed better than the real-time position requirement of 100 m rms per axis. Post-processed solutions indicated an rms position error of 2.5 m and an rms velocity error of 2.2 mm s−1. Satellite laser ranging measurements provided independent verification of the GPS-derived GP-B orbit. We discuss the modifications and performance of the Trimble Advance Navigation System Vector III GPS receivers. We describe the GP-B precision orbit and detail the OD methodology, including ephemeris errors and the laser ranging measurements.
Details
- ISSN :
- 13616382 and 02649381
- Volume :
- 32
- Database :
- OpenAIRE
- Journal :
- Classical and Quantum Gravity
- Accession number :
- edsair.doi...........83bba28066e34477b2ba82f3f81fadf3