| 一种全自动的检测方法用于SAR-ATI的GMTI |
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| 引用本文： | 高飞,毛士艺,玉振明,袁运能. 一种全自动的检测方法用于SAR-ATI的GMTI[J]. 航空学报, 2005, 26(1): 84-89 |
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| 作者姓名： | 高飞 毛士艺 玉振明 袁运能 |
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| 作者单位： | 1. 北京航空航天大学 203教研室, 北京 100083;2. 广西大学梧州分校, 广西 梧州 543002 |
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| 摘 要： | 针对星载SAR-ATI处理的中间结果,提出了一种称为"两步-类高斯拟合"完全自适应的检测方法。该方法可以完全自动地实现杂波和噪声中的运动目标检测,避免了传统方法作联合高斯数据的假定,无须推导SAR-ATI干涉图的理论概率密度函数。此外,该方法还可以大大降低系统的虚警概率并用仿真研究了最小可检测速度。
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| 关 键 词： | 合成孔径雷达 沿航迹向干涉 地面运动目标指示 最小可检测速度 虚警概率 |
| 文章编号： | 1000-6893(2005)01-0084-06 |
| 收稿时间： | 2004-05-14 |
| 修稿时间： | 2004-05-14 |
Fully Automatic Detector in SAR-ATI of GMTI |
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| GAO Fei,MAO Shi-yi,YU Zhen-ming,YUAN Yun-neng. Fully Automatic Detector in SAR-ATI of GMTI[J]. Acta Aeronautica et Astronautica Sinica, 2005, 26(1): 84-89 |
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| Authors: | GAO Fei MAO Shi-yi YU Zhen-ming YUAN Yun-neng |
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| Affiliation: | 1. Faculty 203, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;2. Wuzhou Branch of Guangxi University, Wuzhou 543002, China |
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| Abstract: | A fully automatic detector named "Two Step-Fitting Gaussian Function" aims at processing the output signals from spaceborne synthelic aperture radar (SAR)-along track interferometry (ATI) is proposed. Without the need to assume jointly Gaussian distributed data and derive a theoretical PDF for the interferogram, the new adaptive detection scheme automatically extracts moving targets from stationary clutter and noises. By this method the probability of false alarm P_(fa) is greatly reduced and the minimum detectable velocity (MDV) is investigated. |
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| Keywords: | synthetic aperture radar along track interferometry ground moving target indication minimum detectable velocity probability of false alarm |
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