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Proximity-1 Space Link Protocol : ウィキペディア英語版 | Proximity-1 Space Link Protocol Proximity-1 Space Link Protocol is a short haul delivery communications protocol designed to establish a two-way communications link between a lander and an orbiter, negotiate data rate and communications mode, and reliably deliver data during short orbiter-to-surface contacts. Developed by Consultative Committee for Space Data Systems and documented in a number of CCSDS Recommendations〔 (【引用サイトリンク】url = http://public.ccsds.org/publications/archive/211x2b1s.pdf ) 〕〔 (【引用サイトリンク】url = http://public.ccsds.org/publications/archive/211x0b2s.pdf ) 〕〔 (【引用サイトリンク】url = http://public.ccsds.org/publications/archive/211x1b1s.pdf ) 〕 Proximity-1 is implemented on Mars Exploration Rovers, Mars Odyssey, Mars Reconnaissance Orbiter, Mars Express〔(CCSDS Proximity-1 Communications Protocol Enables High-Speed Communication at Mars )〕 as well as on Phoenix Mars Lander.〔(【引用サイトリンク】url = http://phoenix.lpl.arizona.edu/faq.php )〕 The frequency band used by this protocol is in the 400 MHz band so as to reduce complexity of the ground craft, using these frequencies: * 437.1000 MHz * 440.7425 MHz * 444.3850 MHz * 448.0275 MHz However, using this protocol over the standard CCSDS frequency bands is perfectly acceptable if the UHF allocation is not usable. == References ==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Proximity-1 Space Link Protocol」の詳細全文を読む
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