| 基于原始数据域的星载双通道SAR-GMTI研究 |
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| 引用本文： | 高飞,毛士艺,袁运能,玉振明. 基于原始数据域的星载双通道SAR-GMTI研究[J]. 电子学报, 2005, 33(12): 2105-2110 |
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| 作者姓名： | 高飞 毛士艺 袁运能 玉振明 |
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| 作者单位： | 北京航空航天大学203教研室,北京,100083;广西大学梧州分校,广西,梧州,543002 |
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| 摘 要： | 提出了两种原始数据域的双通道SAR-GMTI实现方法.DPCA-Radon方法可以完成无杂波情况下的运动目标检测和估计,DPCA-Frft-ATI方法可以完成受杂波"污染"运动目标的检测和径向速度估计,该方法提高了信杂比,提高了目标检测和估计性能,优于通常的原始数据域方法,也优于图像域的方法,并且可实现运动目标的聚焦以及图像域的重新定位.仿真结果证明了其正确性和有效性.
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| 关 键 词： | 合成孔径雷达 地面运动目标指示 天线相位中心偏移法 沿航迹向干涉 分数阶傅立叶变换 |
| 文章编号： | 0372-2112（2005）12-2105-06 |
| 收稿时间： | 2004-12-13 |
| 修稿时间： | 2004-12-132005-03-28 |
Study on Raw Data-Based Two Aperture Spaceborne SAR-GMTI |
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| GAO Fei,MAO Shi-yi,YUAN Yun-neng,YU Zhen-ming. Study on Raw Data-Based Two Aperture Spaceborne SAR-GMTI[J]. Acta Electronica Sinica, 2005, 33(12): 2105-2110 |
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| Authors: | GAO Fei MAO Shi-yi YUAN Yun-neng YU Zhen-ming |
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| Affiliation: | 1. Group 203 Beijing Univ.of Aeronautics and Astronautics,Beijing 100083,China;2. Wuzhou Branch Guangxi university,Wuzhou,Guangxi 543002,China |
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| Abstract: | The paper proposes two raw data based approaches for two aperture SAR-GMTI.The method of DPCA-Radon successfully detects and estimates parameters of moving targets in clutter-free environment.The method of DPCA-Frft-ATI achieves these purposes in clutter-rich environment and performs superiorly than commonly used raw data based method and image-based detector via improvement of signal to clutter ratio,also it can focus and relocate moving targets.Simulation results indicate feasibility and effectiveness of the methods. |
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| Keywords: | synthetic aperture radar ground moving target indication displaced phase center antenna along track interferometry fractional fourier transform |
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