| 改进的机载合成孔径雷达小斜视角RD成像算法 |
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| 引用本文： | 王霖郁,樊玉娟,赵宏方.改进的机载合成孔径雷达小斜视角RD成像算法[J].应用科技,2011,38(4):30-34. |
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| 作者姓名： | 王霖郁 樊玉娟 赵宏方 |
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| 作者单位： | 哈尔滨工程大学,信息与通信工程学院,黑龙江,哈尔滨,150001 |
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| 基金项目： | 中央高校基本科研业务费专项资助项目 |
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| 摘 要： | 介绍了RD（range-doppler）算法的基本原理,针对原有RD算法的不足从而提出了改进的RD算法,其主要思想是雷达接收回波后,加入均方误差最小准则窗函数的全相位滤波器来消除旁瓣.用这种改进的RD算法对小斜视角多点目标进行仿真.通过仿真验证这种改进的成像算法可以对不同的点目标成像,而且还可以将点目标之间存在的旁瓣消除.实验证明了原有RD算法存在的旁瓣问题可以通过改进的RD算法来解决.
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| 关 键 词： | 机载合成孔径雷达 小斜视角 旁瓣 改进的RD算法 |
An improved small squint angle range-doppler imaging algorithm for airborne synthetic aperture radar |
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| WANG Linyu,FAN Yujuan,ZHAO Hongfang.An improved small squint angle range-doppler imaging algorithm for airborne synthetic aperture radar[J].Applied Science and Technology,2011,38(4):30-34. |
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| Authors: | WANG Linyu FAN Yujuan ZHAO Hongfang |
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| Institution: | WANG Linyu,FAN Yujuan,ZHAO Hongfang (College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China) |
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| Abstract: | This paper presents the basic principles of range-doppler(RD) algorithm.Considering the shortcomings of the original RD algorithm,an improved RD algorithm is proposed.The main idea is to introduce all-phase filter with mean square error minimal criterion window function to eliminate the sidelobes after receiving radar echo.Then use the improved RD algorithm to simulate the small squint angle multi-point targets.The simulation verifies that the improved RD imaging algorithm can not only image different point... |
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| Keywords: | airborne SAR(synthetic aperture radar) small squint angle sidelobe improved RD algorithm |
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