Long Erasure Correcting Codes: The New Frontier for Zero Loss in Space Applications?

Chiani, Marco; Calzolari, Gian Paolo

doi:10.2514/6.2006-5827

Cited by 5 publications

(4 citation statements)

References 13 publications

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“…If no feedback link is available there are methods like Long Erasure Codes [2] which can reduce the risk of loosing a frame with the penalty of a small overhead. However even simpler schemes can be employed such as sending all the frames twice i.e.…”

Section: Mission Risk and Robustnessmentioning

confidence: 99%

Housekeeping Telemetry Compression: When, How and Why Bother?

Martinez-Heras¹,

Evans

Timm

2009

2009 First International Conference on Advances in Satellite and Space Communications

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Compression of science data for space missions is an established technique whereas data compression of housekeeping telemetry is rare. This paper questions this state of affairs and we investigate the potential advantages and disadvantages of the latter. Using real data from the ROSETTA spacecraft we describe a set of experiments demonstrating that massive compression of housekeeping data can be achieved using standard off the shelf products. We then use these experiments to describe a pre-processing technique that enables a very simple algorithm to obtain similar performances, thus showing that implementation can be relatively straightforward. On average, compression factors of ten were achievable using standard software and compression factors of seven using very simple software. We then address the issue of risk and demonstrate how a combination of compression and mitigation techniques can be used to reduce mission risk rather than increase it. Given these results the paper attempts to shift the focus on each new mission to ask itself "How can we afford not to compress our housekeeping data?"

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Section: Mission Risk and Robustnessmentioning

confidence: 99%

Housekeeping Telemetry Compression: When, How and Why Bother?

Martinez-Heras¹,

Evans

Timm

2009

2009 First International Conference on Advances in Satellite and Space Communications

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“…Nowadays new coding opportunities are available for packet erasure recovery at the upper layers of space links thanks to recent advances in iterative decoding. Among them, LEC codes represent a promising solution [38]. Rather than referring to a specific coding technique, the name LEC codes identifies a heterogeneous ensemble of linear codes that share the following common features: long codeword lengths (up to thousands of packets); iterative decoding; code structure based on sparse graphs; complete flexibility in the choice of the packet length.…”

Section: The New Opportunity For Packet Erasure Correctionmentioning

confidence: 99%

Channel Coding for Future Space Missions: New Requirements and Trends

et al. 2007

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“…Lossless compression is also considered a requirement in many remote sensing mission types [6]- [8]. In addition, the system must continue work even when part of the compressed data stream is lost, because automatic repeat/retransmission queries are not always possible, supported by the spacecraft systems, or feasible in terms of energy and computational resources [9]. Therefore, compression algorithms with high coding efficiency, which introduce dependencies between successive parts of the coded data [4], [5], [7], [8], [10], can make them unsuitable in these scenarios because these dependencies can prevent the decoder from reliably reconstructing the original data from the data stream after a single data loss event.…”

Section: Introductionmentioning

confidence: 99%

Resiliency and Efficiency of the CCSDS 124.0-B-1 Telemetry Compression Standard

Hernández-Cabronero,

Evans,

Bartrina-Rapesta

et al. 2024

IEEE Access

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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.INDEX TERMS CCSDS 124.0-B-1, data compression, telemetry.

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Long Erasure Correcting Codes: The New Frontier for Zero Loss in Space Applications?

Cited by 5 publications

References 13 publications

Housekeeping Telemetry Compression: When, How and Why Bother?

Housekeeping Telemetry Compression: When, How and Why Bother?

Channel Coding for Future Space Missions: New Requirements and Trends

Resiliency and Efficiency of the CCSDS 124.0-B-1 Telemetry Compression Standard

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