The Mars Observer-DSN Ka-Band Link Experiment

摘要: The Ka-Band Link Experiment was the first demonstration of a deep-space communications link in 32- to 35-GHz band (Ka-band). It carried out using Mars Observer spacecraft while cruise phase its mission and 34-meter beam-waveguide research development antenna at Goldstone complex DSN. DSN has been investigating performance benefits shift from X-band (8.4 GHz) Ka-band (32 for communications. fourfold increase frequency is expected offer factor 3 10 improvement (5 dB) signal strength given transmitter power size. Until recently, were based on studies, with an eye implementing such link, but theory transformed reality when 33.7-GHz received by DSS 13. This article describes design implementation DSS-13 system, as well results telemetry demonstration, ranging long-term tracking experiment. Finally, preliminary analysis comparative X- included. These show 4- 7-dB advantage system 13, assuming obstacles pointing loss conversion are overcome.