Qin Lei, Wang Yan-fei, Hu Xiao-xin. A Fast Variable-Rate SAR Raw Data Compression Algorithm[J]. Journal of Electronics & Information Technology, 2006, 28(2): 358-361.
Citation:
Qin Lei, Wang Yan-fei, Hu Xiao-xin. A Fast Variable-Rate SAR Raw Data Compression Algorithm[J]. Journal of Electronics & Information Technology, 2006, 28(2): 358-361.
Qin Lei, Wang Yan-fei, Hu Xiao-xin. A Fast Variable-Rate SAR Raw Data Compression Algorithm[J]. Journal of Electronics & Information Technology, 2006, 28(2): 358-361.
Citation:
Qin Lei, Wang Yan-fei, Hu Xiao-xin. A Fast Variable-Rate SAR Raw Data Compression Algorithm[J]. Journal of Electronics & Information Technology, 2006, 28(2): 358-361.
In this paper, based on the theory of the Block Adaptive Vector Quantization (BAVQ) algorithm, a variable-rate algorithm is proposed. In order to reduce the encoding computation complexity of the improved BAVQ algorithm, a fast VQ search algorithm and a look-up table to found quantizer control (threshold) are used. Using this improved algorithm to compress SAR raw data, a higher encoding efficiency is achieved and the SNR does not decrease in evidence. The decompressed images reserve most of details on the images resulted from raw data.
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