Signal-to-Noise Ratio Prediction and Validation for Space Shuttle GPS Flight ExperimentA deterministic method for Space Station Global Positioning System (GPS) Signal-To- Noise Ratio (SNR) predictions is proposed. The complex electromagnetic interactions between GPS antennas and surrounding Space Station structures are taken into account by computational electromagnetic technique. This computer simulator is capable of taking into account multipath effects from dynamically changed solar panels and thermal radiators. A comparison with recent collected Space Station GPS system flight experiment data is presented. The simulation results are in close agreement with flight data.
Document ID
20100040571
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Hwu, Shian U. (Lockheed Martin Space Operations Houston, TX, United States)
Adkins, Antha A. (Lockheed Martin Space Operations Houston, TX, United States)
Loh, Yin-Chung (Lockheed Martin Space Operations Houston, TX, United States)
Brown, Lisa C. (Lockheed Martin Space Operations Houston, TX, United States)
Sham, Catherine C. (NASA Johnson Space Center Houston, TX, United States)
Kroll, Quin D. (NASA Johnson Space Center Houston, TX, United States)