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Fast and adaptive lossless on-board hyperspectral data compression system for space applications

Show simple item record Aranki, Nazeeh Bakhshi, Alireza Keymeulen, Didier Klimesh, Matthew 2014-08-07T17:56:58Z 2014-08-07T17:56:58Z 2009-03-07
dc.identifier.citation 2009 IEEE Aerospace Conference, Big Sky, Montana, March 7-14, 2009 en_US
dc.identifier.clearanceno 09-0421
dc.description.abstract Efficient on-board lossless hyperspectral data compression reduces the data volume necessary to meet NASA and DoD limited downlink capabilities. The techniques also improves signature extraction, object recognition and feature classification capabilities by providing exact reconstructed data on constrained downlink resources. At JPL a novel, adaptive and predictive technique for lossless compression of hyperspectral data was recently developed. This technique uses an adaptive filtering method and achieves a combination of low complexity and compression effectiveness that far exceeds state-of-the-art techniques currently in use. The JPL-developed ‘Fast Lossless’ algorithm requires no training data or other specific information about the nature of the spectral bands for a fixed instrument dynamic range. It is of low computational complexity and thus well-suited for implementation in hardware, which makes it practical for flight implementations of pushbroom instruments. A prototype of the compressor (and decompressor) of the algorithm is available in software, but this implementation may not meet speed and real-time requirements of some space applications. Hardware acceleration provides performance improvements of 10x-100x vs. the software implementation (about 1M samples/sec on a Pentium IV machine). This paper describes a hardware implementation of the JPL-developed ‘Fast Lossless’ compression algorithm on a Field Programmable Gate Array (FPGA). The FPGA implementation targets the current state of the art FPGAs (Xilinx Virtex IV and V families) and compresses one sample every clock cycle to provide a fast and practical real-time solution for Space applications. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2009 en_US
dc.subject image compression en_US
dc.subject FPGA compressor en_US
dc.title Fast and adaptive lossless on-board hyperspectral data compression system for space applications en_US
dc.type Presentation en_US

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