| UWB-SAR图像中二面角目标的检测 |
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| 引用本文： | 董臻,梁甸农.UWB-SAR图像中二面角目标的检测[J].系统工程与电子技术,2001,23(4):1-3. |
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| 作者姓名： | 董臻 梁甸农 |
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| 作者单位： | 国防科技大学电子科学与工程学院, |
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| 基金项目： | 国家部委基金项目资助课题(7.5.3.2) |
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| 摘 要： | 目标的散射特性常依赖于雷达和目标间的姿态角，该依赖性在大积累角的UWB-SAR(UltraWide-BandSAR)中尤为明显，但是经过成像处理，这种关系在图像中被掩盖了。通过分析SAR图像的频谱特点，提出一种方向滤波与双参数恒虚警检测相结合的方法，利用目标响应的方向性检测大处理角UWB-SAR图像中的目标点。对仿真数据处理的结果表明，该方法具有结构简单、性能优良稳定等优点。
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| 关 键 词： | 合成孔径成像 滤波器 恒虚警检测器 |
| 文章编号： | 1001-506X(2001)04-0001-03 |
| 修稿时间： | 2000年6月20日 |
The Utlization of
Directional Characteristic in ATD of Wide Processing-Angle UWB-SAR |
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| Dong Zhen,LIANG Diannong.The Utlization of
Directional Characteristic in ATD of Wide Processing-Angle UWB-SAR[J].System Engineering and Electronics,2001,23(4):1-3. |
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| Authors: | Dong Zhen LIANG Diannong |
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| Institution: | Dong Zhen\ \ Liang Diannong College of Electrical Science and Engineering,NUDT,Changsha 410073 |
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| Abstract: | The object's scattering characteristic is often dependent on target-radar orientation. The characteristic is prominent especially in the wide processing-angle UWB-SAR. But it is concealed in the SAR image after imaging. By analyzing the charactaristic of 2-D frequency domain of SAR images, this paper proposes a method combining CFAR with directional filtering to detect the target like points in the SAR image. The simulation result shows that it is effective. |
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| Keywords: | Synthetic aperture imaging Electric filter Constant false alarm detector |
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