Browsing International Telemetering Conference Proceedings, Volume 29 (1993) by Authors
Magellan Recorder Data Recovery AlgorithmsScott, Chuck; Nussbaum, Howard; Shaffer, Scott; California Institute of Technology; Hughes Aircraft (International Foundation for Telemetering, 1993-10)This paper describes algorithms implemented by the Magellan High Rate Processor to recover radar data corrupted by the failure of an onboard tape recorder that dropped bits. For data with error correction coding, an algorithm was developed that decodes data in the presence of bit errors and missing bits. For the SAR data, the algorithm takes advantage of properties in SAR data to locate corrupted bits and reduce there effects on downstream processing. The algorithms rely on communication approaches, including an efficient tree search and the Viterbi algorithm to maintain the required throughput rate.