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| Pàgina inicial > Articles > Articles publicats > Resiliency and Efficiency of the CCSDS 124.0-B-1 Telemetry Compression Standard |
| Data: | 2024 |
| Resum: | The Consultative Committee for Space Data Systems (CCSDS) recently published a lossless compression standard for housekeeping and telemetry. These data are critical for the safe and productive operation of virtually all remote sensing missions, including Earth observation. The new standard, CCSDS 124. 0-B-1 "Robust Compression of Fixed-Length Housekeeping Data," allows lossless, real-time telemetry packet transmission with low energy and memory requirements. Furthermore, it offers flexible resiliency mechanisms to resume decompression after losing one or more data packets. This work provides an accessible introduction to CCSDS 124. 0-B-1, paying special attention to its resiliency features. Two novel and complementary decoder resynchronization strategies are also presented, which maximize the amount of correctly decoded data. Comprehensive experiments with real and simulated mission data were conducted for this work to assess the standard's performance and the impact of user-defined parameters. Results indicate competitive coding performance, with average compression ratios between 4 and 16 depending on the dataset. Smooth trade-offs are also observed between compression performance and the degree of protection against data loss events, which enhances the usability of CCSDS 124. 0-B-1 in multiple mission types and operational conditions. |
| Ajuts: | European Commission 801370 Agencia Estatal de Investigación PID2021-125258OB-I00 Agencia Estatal de Investigación RTI2018-095287-B-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00643 Agència de Gestió d'Ajuts Universitaris i de Recerca 2018/BP-00008 |
| Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
| Llengua: | Anglès |
| Document: | Article ; recerca ; Versió publicada |
| Matèria: | Data compression ; Telemetry ; Space communications |
| Publicat a: | IEEE Access, Vol. 12 (March 2024) , p. 36702-36711, ISSN 2169-3536 |
10 p, 2.1 MB |