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| SAR Raw Signal Fast Algorithm in Mixed Domain |
| Wang Bing-nan①② Zhang Fan① Xiang Mao-sheng① |
①(National Key Laboratory of Science and Technology on Microwave Imaging, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)
②(Graduate University of Chinese Academy of Sciences, Beijing 100039, China) |
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Abstract In this paper, a SAR raw signal simulation algorithm is presented in a mixed time-frequency domain. By space-variant system transfer function along range, spectrum of raw signal is calculated precisely in range time domain. Then the complexity and phase precision are both analyzed. The result illustrates that it not only can improve the efficiency of simulation with high precision, but also can easily introduce motion error model in time domain. Finally several simulation experiments for point target and extended scene are provided. The results prove the validity of the proposed algorithm.
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Received: 01 June 2010
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Corresponding Authors:
Wang Bing-nan
E-mail: wangbingnan05@gmail.com
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2011, Vol. 33 
