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- W2121719357 abstract "This paper provides a detailed description of the radio communications system developed for the Comet Nucleus Tour (CONTOUR) Project. The communications system embodies a delicate balance of minimizing cost while providing the high performance needed to support a deep-space science mission. CONTOUR employs a transceiver-based X-band system instead of traditional deep-space transponders. For navigation, we have a conventional ranging channel and employ a novel Doppler frequency measurement technique. A reference oscillator with low phase noise is included to allow narrow bandwidth downlink carrier tracking at the ground stations. The antenna system is a combination of high- and low-gain antennas to support high-data-rate science returns and low-data-rate emergency operations. As CONTOUR is spin stabilized for most of the mission, including emergency operations, all antennas have been designed to provide continuous coverage around 360/spl deg/ of spacecraft rotation." @default.
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- W2121719357 date "2002-11-13" @default.
- W2121719357 modified "2023-09-28" @default.
- W2121719357 title "The CONTOUR radio communications system" @default.
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- W2121719357 doi "https://doi.org/10.1109/aero.2001.931697" @default.
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