Research on data compression of the X-Ray spectrometer for Chang'E mission

被引：0
|
作者：
Ma R.-M. [1 ]
Wang H.-Y. [1 ]
机构：
[1] Particles and High Energy Astrophysics Center, Institute of High Energy Physics, Chinese Academy of Sciences
来源：
Yuhang Xuebao/Journal of Astronautics | 2011年 / 32卷 / 01期
关键词：
Correlative coding; Data compression; Dictionary coding; Prefix coding; Sparse strings coding; X-ray spectrometer;
D O I：
10.3873/j.issn.1000-1328.2011.01.016
中图分类号：
学科分类号：
摘要：
An efficient data compression scheme for the X-ray spectrometer, which is one of the key payloads of Chang'E Mission, is presented in this paper. According to the actual data characteristics, this scheme can use a series of algorithms like sparse strings coding, correlative coding, prefix coding and dictionary coding to realize lossless and nearly lossless compression. Experimental results prove that the average compression ratio of solar energy spectrum obtained from laboratory tests and Chang'E-1 satellite data respectively are 15 and 7, and the average compression ratio of two kinds of lunar events are both 2. Besides, it also has some error correcting capability. This data compression scheme can meet the function requirements and provide experience and preparation for the data processing tasks of particle X-ray spectrometer in Chang'E-3 satellite.
引用
收藏
页码：104 / 108
页数：4
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