| SAR原始信号的快速仿真 |
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| 引用本文： | 于明成,许稼,彭应宁,王秀坛.SAR原始信号的快速仿真[J].系统仿真学报,2006,18(Z2):122-125. |
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| 作者姓名： | 于明成 许稼 彭应宁 王秀坛 |
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| 作者单位： | 1. 清华大学电子工程系,北京,100084;中国人民解放军91336部队,河北,秦皇岛,066326
2. 清华大学电子工程系,北京,100084 |
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| 基金项目： | 国家自然科学基金(60502012)，部委基金(J01-2005078) |
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| 摘 要： | 合成孔径雷达(Syntheticapertureradar,SAR)原始信号仿真对于SAR系统调试,SAR信号处理算法的研究具有重要意义。基于SAR原始回波信号的特点,研究了SAR原始信号的快速仿真问题。对于SAR发射线性调频信号的情况,证明了模拟SAR接收过程的正向法和借鉴SAR成像处理逆过程的逆向法两者之间的统一性。提出了香农插值的快速实现方法。仿真实例表明,所提方法在保证仿真逼真度的前提下,具有较高的计算效率。
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| 关 键 词： | SAR原始信号仿真 波数域算法 香农插值 距离徙动 |
| 文章编号： | 1004-731X(2006)S2-0122-04 |
| 修稿时间： | 2006年4月28日 |
Fast Simulation of SAR Raw Signal |
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| YU Ming-cheng,XU Jia,PENG Ying-ning,WANG Xiu-tan.Fast Simulation of SAR Raw Signal[J].Journal of System Simulation,2006,18(Z2):122-125. |
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| Authors: | YU Ming-cheng XU Jia PENG Ying-ning WANG Xiu-tan |
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| Institution: | YU Ming-cheng1,2,XU Jia1,PENG Ying-ning1,WANG Xiu-tan1 |
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| Abstract: | SAR (Synthetic aperture radar, SAR) raw signal simulation is significant for SAR system test and development of signal processing algorithms. Based on the characteristics of SAR raw signal, a method to realize the fast simulation of SAR raw signal was described. For the SAR that transmits linear frequency modulation signal, it is proved that the forward method which simulates SAR receiving process is consistent with the backward method that utilizes to the inverse process of SAR imaging algorithm. Fast implementation of Shannon interpolation was proposed. Simulation example shows that the proposed method can ensure the simulation fidelity with high computational efficiency. |
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| Keywords: | SAR raw signal simulation wavenumber domain algorithm Shannon interpolation range migration |
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