应用行程编码的航天器分包遥测压缩算法研究  

Research on Packet Telemetry Compression Algorithm Using RLE

作　　者：闫国瑞[1] 李志刚[1] 史简[1] 赵婷[1] 李国军[1] 

机构地区：[1]航天东方红卫星有限公司,北京100094

出　　处：《航天器工程》2015年第2期58-61,共4页Spacecraft Engineering

基　　金：国家重大航天工程

摘　　要：针对航天器延时遥测存储数据量较大的问题,提出了一种应用行程编码(RLE)的分包遥测压缩算法。根据遥测数据的特点,对压缩算法进行改进,使压缩效果得到进一步提升。此外,对压缩数据生成符合空间数据系统咨询委员会(CCSDS)标准的分包遥测机制进行了阐述。对某卫星的试验表明,使用改进后的压缩算法,能够获得6.11倍的遥测压缩比,可提高延时遥测采样频率,增加航天器在境外的可用遥测数据量。For large storage of spacecraft telemetry data, a packet telemetry compression algo- rithm using RLE （run length encoding） is proposed in this paper. According to the characteristics of telemetry data, the compression algorithm is improved, so that the compression ratio can be further increased. The mechanism of producing CCSDS-compliant packet data is also presented. An experimental results for a certain satellite show that the improved algorithm can obtain a com- pression ratio of 6.11, which can raise the stored telemetry sampling frequency, and increase the amount of available telemetry data without ground contact.

关 键 词：航天器遥测数据 压缩算法 延时遥测 分包遥测 行程编码 

分 类 号：V556.1[航空宇航科学与技术—人机与环境工程]