CROSS-MODULATION INTERFERENCE AVOIDANCE FOR ENHANCED PERFORMANCE OF DEEP SPACE TELEMETRY SYSTEMS
AffiliationCalifornia Institute of Technology
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AbstractIn this paper we investigate the performance degradation of the NASA Deep Space Network (DSN) telemetry receiving system for two data channels in the presence of cross-modulation interference. It is shown that the sub-carrier waveforms and/or frequencies can be selected to suppress the cross-modulation interference for enhanced deep-space telemetry performance. The application of this study is suggested for a simultaneous telemetry and ranging as well as telecommand and ranging operations. Recommendations as to use of specific subcarrier waveforms and frequencies to suppress cross-modulation interference are made to the international Consultative Committee for Space Data Systems (CCSDS) for consideration in the future standards systems.
SponsorsInternational Foundation for Telemetering