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    題名: Vector quantization with self-resynchronizing coding for lossless compression and rebroadcast of the NASA Geostationary Imaging Fourier Transform Spectrometer (GIFTS) data
    作者: Huang, Bormin;Wei, Shih-chieh;Huang, Hung-lung;Smith, William L.;Bloom, Hal J.
    貢獻者: 淡江大學資訊管理學系
    日期: 2008-08
    上傳時間: 2011-10-23 12:58:10 (UTC+8)
    出版者: SPIE
    摘要: As part of NASA's New Millennium Program, the Geostationary Imaging Fourier Transform Spectrometer (GIFTS) is an advanced ultraspectral sounder with a 128x128 array of interferograms for the retrieval of such geophysical parameters as atmospheric temperature, moisture, and wind. With massive data volume that would be generated by future advanced satellite sensors such as GIFTS, chances are that even the state-of-the-art channel coding (e.g. Turbo codes, LDPC) with low BER might not correct all the errors. Due to the error-sensitive ill-posed nature of the retrieval problem, lossless compression with error resilience is desired for ultraspectral sounder data downlink and rebroadcast. Previously, we proposed the fast precomputed vector quantization (FPVQ) with arithmetic coding (AC) which can produce high compression gain for ground operation. In this paper we adopt FPVQ with the reversible variable-length coding (RVLC) to provide better resilience against satellite transmission errors remaining after channel decoding. The FPVQ-RVLC method is compared with the previous FPVQ-AC method for lossless compression of the GIFTS data. The experiment shows that the FPVQ-RVLC method is a significantly better tool for rebroadcast of massive ultraspectral sounder data.
    關聯: Proceedings of the SPIE 7084, Satellite Data Compression, Communication, and Processing IV, 708408 (5 September 2008)
    DOI: 10.1117/12.800914
    顯示於類別:[資訊管理學系暨研究所] 會議論文





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