Computer Science – Performance
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982tdar.nasa..139b&link_type=abstract
In its The Telecommun. and Data Acquisition Rept. p 139-150 (SEE N82-25092 15-99)
Computer Science
Performance
Deep Space Network, Radiometers, Real Time Operation, Satellite Transmission, Signal Reception, Signal To Noise Ratios, Radio Signals, Saturn (Planet), System Effectiveness, System Failures, Voyager 2 Spacecraft
Scientific paper
The precision power monitor (PPM) is a precision radiometric instrument used to improve the efficiency of signal reception by the Deep Space Network. Real time estimates of the system operating temperature, the present (signal + noise)-to-noise ratio, and the signal power are utilized to increase the accuracy and resolution of the received spacecraft signal. Due to the critical nature of radio science data returning from Voyager 2 at Saturn Encounter, PPM support was required. The task was undertaken to validate the performance of equipment technically under research and development in time to meet the encounter deadline. Initial studies revealed PPM performance to be out of tolerance. Action was immediately taken to identify the system problems. Using data analysis as feedback, the system failures were identified and corrected in time to contribute to the encounter support efforts. As a result, the radio science data were collected successfully.
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