| 一种新的双通道运动目标测速定位方法 |
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| 引用本文： | 蔚婧,廖桂生.一种新的双通道运动目标测速定位方法[J].系统工程与电子技术,2009,31(7):1620-1622. |
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| 作者姓名： | 蔚婧 廖桂生 |
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| 作者单位： | 西安电子科技大学雷达信号处理国家重点实验室, 陕西, 西安, 710071 |
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| 摘 要： | 利用双通道合成孔径雷达(synthetic aperture radar,SAR)数据的协方差矩阵的第二特征值,可以有效地检测地面运动目标。在此基础上,提出一种新的运动目标测速定位方法,该方法通过提取双通道SAR数据的协方差矩阵非对角元素相位信息来对运动目标进行测速和定位。仿真数据和实测数据都验证了该方法的有效性,实验结果表明该方法的测速精度优于传统沿航迹干涉(ATI)方法。
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| 关 键 词： | 合成孔径雷达 地面运动目标检测 协方差矩阵 沿航迹干涉 |
| 收稿时间： | 2008-03-19 |
| 修稿时间： | 2008-08-01 |
New velocity estimation and location algorithm for moving targets based on dual-channel SAR systems |
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| YU Jing,LIAO Gui-sheng.New velocity estimation and location algorithm for moving targets based on dual-channel SAR systems[J].System Engineering and Electronics,2009,31(7):1620-1622. |
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| Authors: | YU Jing LIAO Gui-sheng |
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| Institution: | National Key Lab. of Radar Signal Processing, Xidian Univ., Xi’an 710071, China |
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| Abstract: | The second eigenvalue of the sample covariance matrix of dual-channel SAR data can effectively indicate the ground moving targets.A new approach is proposed to estimate the radial velocity by extracting the phase information of the off-diagonal elements in the sample covariance matrix.The technique is verified experimentally by both simulated and real SAR data.Experimental results illustrate that the velocity estimation precision is better than the conventional ATI technique. |
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