NASA's Space Communications and Navigation Testbed was installed on an external truss of the International Space Station in 2012. The testbed contains several software-defined radios (SDRs), including the Jet Propulsion Laboratory (JPL) SDR, which underwent performance testing throughout 2013 with NASA's Tracking and Data Relay Satellite System (TDRSS). On-orbit testing of the JPL SDR was conducted at S-band with the Glenn Goddard TDRSS waveform and compared against an extensive dataset collected on the ground prior to launch. This paper will focus on the development of a waveform power estimator on the ground post-launch and discuss the performance challenges associated with operating the power estimator in space.
Comparing On-Orbit and Ground Performance for an S-Band Software-Defined Radio
2014
9 pages
Report
Keine Angabe
Englisch
Space Technology , Performance tests , Comparison , Signal measurement , Radio communication , Test stands , Orbital space tests , Ground tests , Radio signals , Applications programs (computers) , Waveforms , Radio telemetry , Ultrahigh frequencies , Automatic gain control , Tdr satellites , International space station , Estimates , Breadboard models , Bandwidth , Communication networks , Communication satellites , Bit error rate , Nasa space programs , Technology assessment , Research facilities , Algorithms , Spacecraft antennas