| Citation: | ZHENG Xiangzhi, ZHANG Aibing, KONG Linggao, WIESER Martin, KALLA Leif, QIU Tongsheng, WANG Wenjing, TIAN Zheng. Data Compression Algorithm of the Ion and Neutral Particle Analyzer for the First Chinese Mars Mission (in Chinese). Chinese Journal of Space Science, 2023, 43(1): 129-136 doi: 10.11728/cjss2023.01.210409047
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An integrated ion and neutral particle analyzer is built for the first Chinese Mars exploration project, which has ten detecting modes. Most detecting modes of the analyzer produce data far more than data capability of the Mars project. A special data-processing method is presented, including data merging, logarithmic compression and lossless compression. By setting symbols in FPGA, all the three compression algorithms can be used serially, or only requisite algorithms are selected, making data-processing flexible. The compression ratio of data merging is 2 or 4, and logarithmic compression is 2. The compression ratio of lossless compression is necessarily related to data characteristic in different detecting mode. Furthermore, the experiment results show that the data-processing method has good performances and the data rate fulfills the requirements for the project.
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Journal Introduction
ISSN 0254-6124 CN 11-1783/V
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