Adaptive Frequency Domain Algorithm for SAR Raw Data Compression Based on Two Dimensions Look-up Table

Qi Hai-ming; Yu Wei-dong

doi:10.3724/SP.J.1146.2007.01664

Volume 31 Issue 3

Dec. 2010

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Qi Hai-ming, Yu Wei-dong. Adaptive Frequency Domain Algorithm for SAR Raw Data Compression Based on Two Dimensions Look-up Table[J]. Journal of Electronics & Information Technology, 2009, 31(3): 592-595. doi: 10.3724/SP.J.1146.2007.01664

Citation:

Qi Hai-ming, Yu Wei-dong. Adaptive Frequency Domain Algorithm for SAR Raw Data Compression Based on Two Dimensions Look-up Table[J]. Journal of Electronics & Information Technology, 2009, 31(3): 592-595. doi: 10.3724/SP.J.1146.2007.01664

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Adaptive Frequency Domain Algorithm for SAR Raw Data Compression Based on Two Dimensions Look-up Table

doi: 10.3724/SP.J.1146.2007.01664

Received Date: 2007-10-23
Rev Recd Date: 2008-07-17
Publish Date: 2009-03-19

Abstract

Abstract

According to Doppler centroid shift and Doppler spectrum split, this paper proposes an adaptive Doppler nonuniform bit allocation approach based on one dimension Look-Up Table (LUT). Combined with one dimension quantization and coding LUT this approach forms the adaptive compression algorithm in frequency domain. Meanwhile, this paper deduces the spectrum analytic function of the echo in range and provides with the general scheme for nonuniform compression ratio allocation. Numerical experiments results based on real SAR data show that new algorithm has higher SNR and better robustness than traditional frequency domain algorithms. Theoretical analysis shows that the calculation load is small and can be easily applied in engineering.

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References(1)

References

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