| 机载三通道SAR/GMTI性能分析及改进方法 |
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| 引用本文： | 史洪印,周荫清,陈杰. 机载三通道SAR/GMTI性能分析及改进方法[J]. 北京航空航天大学学报, 2009, 35(7): 904-908 |
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| 作者姓名： | 史洪印 周荫清 陈杰 |
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| 作者单位： | 北京航空航天大学,电子信息工程学院,北京,100191;北京航空航天大学,电子信息工程学院,北京,100191;北京航空航天大学,电子信息工程学院,北京,100191 |
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| 摘 要： | 在分析经典的三通道SAR(Synthetic Aperture Radar)地面动目标指示(GMTI,Ground Moving Target Indication)方法原理的基础上,提出一种较全面三通道SAR/GMTI性能评价方法.该方法同时考虑了载机存在速度误差、通道不匹配、杂波内部运动和系统噪声等主要误差因素,并分析了各种因素对系统性能的影响.经典的三通道SAR/GMTI方法存在的缺点是不能同时提高最大不模糊可检测速度、最小可检测速度和盲速指标的性能以满足系统设计的要求.给出了一种新的天线布置方案和动目标检测方法,改进的检测方法在不增加通道数的前提下,较好地解决了该问题,具有很好的实用性.最后通过计算机仿真验证了新方法的可行性.
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| 关 键 词： | 合成孔径雷达 地面动目标指示 模糊速度 最小可检测速度 盲速 杂波内部运动 |
| 收稿时间： | 2008-12-05 |
Performance analysis and improved method for airborne three-channel SAR/GMTI system |
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| Shi Hongyin,Zhou Yinqing,Chen Jie. Performance analysis and improved method for airborne three-channel SAR/GMTI system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(7): 904-908 |
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| Authors: | Shi Hongyin Zhou Yinqing Chen Jie |
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| Affiliation: | School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | A comprehensive performance analysis method of three-channel SAR(synthetic aperture radar) GMTI(ground moving target indication) was presented after analyzing the theory of conventional three channel SAR ground moving target indication methods.The main error factors such as velocity variety of radar platform,receiver channel mismatch,clutter internal motion and system noise were considered in this method and the detection performance of each error factor affect on was analyzed too.The shortcoming of convent... |
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| Keywords: | synthetic aperture radar ground moving target indication ambiguous speed minimum detectable velocity blind-speed clutter internal motion |
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