Simple resiliency improvement of the CCSDS standard for lossless data compression

Marcial Clotet; Jordi Portell; Alberto G. Villafranca; Enrique García-Berro

doi:10.1117/12.860862

24 August 2010 Simple resiliency improvement of the CCSDS standard for lossless data compression

Marcial Clotet, Jordi Portell, Alberto G. Villafranca, Enrique García-Berro

Proceedings Volume 7810, Satellite Data Compression, Communications, and Processing VI; 78100V (2010) https://doi.org/10.1117/12.860862
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

The Consultative Committee for Space Data Systems (CCSDS) recommends the use of a two-stage strategy for lossless data compression in space. At the core of the second stage is the Rice coding method. The Rice compression ratio rapidly decreases in the presence of noise and outliers, since this coder is specially conceived for noiseless data following geometric distributions. This, in turn, makes the CCSDS recommendation too sensitive in front of outliers in the data, leading to non-optimal ratios in realistic scenarios. In this paper we propose to substitute the Rice coder of the CCSDS recommendation by a subexponential coder. We show that this solution offers high compression ratios even when large amounts of noise are present in the data. This is done by testing both compressors with synthetic and real data. The performance is actually similar to that obtained with the FAPEC coder, although with slightly higher processing requirements. Therefore, this solution appears as a simple improvement that can be done to the current CCSDS standard with an excellent return.

Citation Download Citation

Marcial Clotet, Jordi Portell, Alberto G. Villafranca, and Enrique García-Berro "Simple resiliency improvement of the CCSDS standard for lossless data compression", Proc. SPIE 7810, Satellite Data Compression, Communications, and Processing VI, 78100V (24 August 2010); https://doi.org/10.1117/12.860862

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