| 维纳滤波最优权修正导向矢量的SAR-GMTI动目标径向速度估计方法 |
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| 引用本文： | 束宇翔,廖桂生,杨志伟. 维纳滤波最优权修正导向矢量的SAR-GMTI动目标径向速度估计方法[J]. 电子学报, 2011, 39(9): 1986-1991 |
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| 作者姓名： | 束宇翔 廖桂生 杨志伟 |
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| 作者单位： | 西安电子科技大学雷达信号处理重点实验室,陕西西安 710071 |
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| 基金项目： | 长江学者和创新团队发展计划资助(No.IRT-0954); 国家自然科学基金(No.60901066,No.60825104); 国防预研基金(No.9140C0101081001) |
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| 摘 要： | 针对通道幅相误差和图像配准误差等非理想因素导致动目标径向速度估计性能下降问题,本文提出利用维纳滤波最优权修正导向矢量的动目标径向速度估计方法.该方法利用抑制杂波的维纳滤波最优权矢量对动目标理想导向矢量加权处理获得修正导向矢量,并采用匹配滤波算法估计动目标径向速度.仿真数据和某机载多通道SAR-GMTI实测数据处理表明,所提方法对通道幅相误差和图像配准误差稳健,在图像相邻像素存在较大相关性时仍可获得较高的动目标径向速度估计精度.
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| 关 键 词： | 地面运动目标检测 杂波抑制 参数估计 |
| 收稿时间： | 2010-04-07 |
Radial Velocity Estimation of Moving Targets Based on Modifying the Steering Vector with Wiener Optimal Weights in SAR-GMTI Radar System |
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| SHU Yu-xiang,LIAO Gui-sheng,YANG Zhi-wei. Radial Velocity Estimation of Moving Targets Based on Modifying the Steering Vector with Wiener Optimal Weights in SAR-GMTI Radar System[J]. Acta Electronica Sinica, 2011, 39(9): 1986-1991 |
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| Authors: | SHU Yu-xiang LIAO Gui-sheng YANG Zhi-wei |
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| Affiliation: | National Lab of Radar Signal Processing,Xidian University,Xi'an,Shaanxi 710071,China |
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| Abstract: | For the purpose of overcoming the influence of non-ideal factors on the performance of the radial velocity estimation,such as the channel gain and phase response error and image registration error,a new match filtering algorithm based on modifying the steering vector with the optimal weights for Wiener filtering is proposed.The validity and superiority of this method are experimentally verified by the simulated and real synthetic aperture radar(SAR) data.The results illustrate this method has a good robustn... |
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| Keywords: | ground moving target detection clutter rejection target parameter estimation |
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