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Telemetry Data Downlink Management of Low Earth Orbit Satellite  

Chae, Dongseok (한국항공우주연구원 위성기술연구소 위성본체실 위성비행소프트웨어팀)
Yang, Seung-Eun (한국항공우주연구원 위성기술연구소 위성본체실 위성비행소프트웨어팀)
Cheon, Yee-Jin (한국항공우주연구원 위성기술연구소 위성본체실 위성비행소프트웨어팀)
Publication Information
Journal of Satellite, Information and Communications / v.8, no.4, 2013 , pp. 111-116 More about this Journal
Abstract
Because LEO (Low Earth Orbit) satellite has very limited contact time between satellite and ground station, all telemetry data generated on satellite are stored in a mass memory and transmitted to the ground during the contact time. There are two downlink modes, real-time mode and playback mode. Only real-time data frames are transmitted to the ground in real-time mode, real-time and playback data frames stored into mass memory are transmitted to the ground in playback mode. In accordance with the data transmission rate, there are two downlink rates, low downlink rate and high downlink rate. This paper briefly introduces downlink interfaces and flight software of a LEO satellite developed in KARI. And it presents the telemetry storage method, real-time and playback downlink management method, and downlink channel and rate control method.
Keywords
telemetry; downlink; playback; mass memory; flight software; LEO satellite;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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