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| A Method for Correcting Saturation Effect in SAR Raw Data Based on Dynamic Decoding |
| Qiu Xiao-lan①②③ Han Chuan-zhao① Hu Ding-sheng②③ Ding Chi-biao③ |
①(Beijing Institute of Remote Sensing Information, Beijing 100192, China)
②(Key Laboratory of Technology on Geo-spatial Information Processing and Application System, Chinese Academy of Sciences, Beijing 100190, China)
③(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China) |
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Abstract Caused by the limited quantization dynamic range of the spaceborne SAR, the echo saturation phenomenon happens between timesduring spaceborne SAR data acquiring. In this paper, saturation correction methods based on dynamic decoding are proposed for uniform quantization and Block Adaptive Quantization (BAQ), which are two of the most commonly used quantization method in spaceborne SAR. The dynamic decoding methods can alleviate the image power loss caused by saturation, improve the radiation precision, and enhance the image signal-to-noise ratio. The simulation results validate the effectiveness of the proposed methods.
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Received: 08 October 2012
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Corresponding Authors:
Qiu Xiao-lan
E-mail: xlqiu@mail.ie.ac.cn
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2013, Vol. 35 
