【摘要】 本文首先介绍了遥测系统的特点,以引出遥测系统中使用数据压缩器的必要性。接下来从所选择的压缩算法和硬件设计方面说明了数据压缩器的基本工作原理,以及为了实现航天遥测数据的可靠性传输所采用的有效方法。文中包括遥测数据信道传输模型、如何采用数据分组传输技术抑制误码扩散效应和数据失锁。此外,为了设计一个可靠传输连续数据流的系统,还对有可能出现的短时低效压缩引起信道阻塞的情况作了深入分析。并在设计中通过软硬件结合的方式作了处理,最大程度地降低此类情况可能引起的不良后果。更多还原

【Abstract】 This paper introduces the characteristics of the telemetry system,and explains the need of using data compression in the telemetry system.From the choice of compression algo- rithms and hardware design showed that the data compression work with the basic theory,and in order to achieve what will happen in the space of telemetry data transmission,using an effec- tive method.It includs telemetry data channel transmission model,and how to apply data pack- et transmission technology inhibitory effect of the proliferation of error and data loss lock.Fur- thermore,in order to design a reliable transmission of all data systems,it will make a deep a- nalysis to the blockage of the channel short-term caused by inefficient compression.Thrugh the combination of hardware and software processing,it can reduce the adverse consequences caused by such cases in greatest extent.更多还原