Efficient Data Compression for Spacecraft including Planetary Probes
نویسندگان
چکیده
For all types of space missions, the available bandwidth for the transmission of data back to Earth is an important constraint with significant impact on vehicle design, onboard resources, and mission operations. The efficient compression of science and housekeeping data allows maximizing the utilization of available bandwidth and onboard resources. While data compression is traditionally used for science payload data, the compression of spacecraft housekeeping data is becoming increasingly attractive in particular for exploration and science missions that have significant bandwidth constraints. We present a summary of present and upcoming standardized data compression algorithms for on-board implementation, including ESA's latest related developments such as a new implementation of the CCSDS-122.0 (image data compression) standard, performant multispectral data compression algorithms, and research on simple pre-processing steps which improve the compression performance in particular for packetized data such as spacecraft housekeeping data. Test results for various compression algorithms are presented, and a new software tool is introduced which supports the evaluation of standardized data compression algorithms by industry and by payload teams.
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