基于提升小波的SAR原始數(shù)據(jù)壓縮算法
Lifting Wavelet for SAR Raw Data Compression
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摘要: 該文介紹了提升方法構(gòu)造小波變換的優(yōu)點，結(jié)合SAR原始數(shù)據(jù)的特點，提出了基于提升小波變換的SAR原始數(shù)據(jù)壓縮算法。利用模擬和實際數(shù)據(jù)分析了基于提升小波的壓縮算法的性能，與其他原始數(shù)據(jù)壓縮算法的比較說明了這一方法的有效性。
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關(guān)鍵詞:
- 合成孔徑雷達;數(shù)據(jù)壓縮;提升小波
Abstract: The advantages of wavelet transform constructed with lifting scheme are introduced and compression algorithm based on lifting wavelet for SAR raw data is proposed. Compression performance of the algorithm is analyzed with simulation and real raw data and compared with other techniques by different quality parameters, which show that the algorithm is suitable for compression of SAR raw data. -
Benz U, Strodl K, Moreira A. A comparison of several algorithms for SAR raw data compression[J].IEEE Trans. on Geoscience and Remote Sensing.1995, 33(5):1266-[2]Pascazio V, Schitinzi G. Wavelet transform coding for SAR raw data compression, IGARSS, Hamburg, Germany, 1999, (4): 2251.2253.[3]Magli E, Olmo G, Penna B. Wavelet-based compression of SAR raw data. IGARSS, Toronto, Canada, 2002, (2): 24.28.[4]Pascazio V, Schitinzi G. SAR phase history data compression by using wavelet packets. IGARSS, Honolulu, USA, 2000, (6): 2639.2641.[5]Sweldens W. The lifting scheme: A construction of second generation wavelet. SIMA J. Math, Anal, 1997, 29(2): 511.546.[6]Mallat S著, 楊力華等譯, 信號處理的小波導(dǎo)引(2nd). 北京: 機械工業(yè)出版社, 2002, 第七章. -
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