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The Research of Orbit High Speed Multiplex and Routing Technology Based on CCSDS AOS

Author: ZhangDongWei
Tutor: WangYuï¼›ZhangShanCong
School: Graduate School, Chinese Academy of Sciences
Course: Aircraft design
Keywords: Data multiplexing routing CCSDS AOS RS coding
CLC: TP309.3
Type: Master's thesis
Year: 2007
Downloads: 249
Quote: 1
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Abstract


Due to the rapid development of space technology , more and more number of payload data downlink channel equipped mission . China 's high-speed multiplexer technology is still stuck in a many-to-one , multiple high-speed data input , the future development needs of multiple output FIFO level , to meet the spacecraft payload , the proposed high - speed data multiplexing in orbit then routing solutions . The research of high-speed data multiplexing routing techniques involving multiple data sources , multiple memory and multiple output channels , using a combination of FPGA and embedded SoC design program . Full use of FPGA high-speed data processing power and flexibility of SoC partition storage of multiple data sources required , partition management , and priority for critical data and sensitive data downstream functions , improve the payload data transmission of real-time and flexibility. The payload data to be packaged in accordance with the CCSDS AOS specification RS coding , in order to adapt to the signal power level weak , transmission extend , channel noise and Doppler shift large Tiandi link characteristics . The research topics in the the spacecraft payload data management system has broad application prospects and practical value .

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