| 一种基于INSAR的叠掩区域识别算法 |
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| 引用本文： | 刘宁宁. 一种基于INSAR的叠掩区域识别算法[J]. 科学技术与工程, 2011, 11(17): 3975-3978 |
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| 作者姓名： | 刘宁宁 |
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| 作者单位： | 1. 中国科学院电子学研究所微波成像技术国家重点实验室,北京,100190;中国科学院研究生院,北京,100039
2. 中国科学院电子学研究所微波成像技术国家重点实验室,北京,100190 |
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| 基金项目： | The National High Technology Research and Development Program of China (863 Program) |
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| 摘 要： | 干涉合成孔径雷达是获取场景数字高程模型和正射影像图的有效技术之一。叠掩现象是SAR图像几何失真现象的一种。由于多点回波叠加,叠掩区域的相位并不准确,而且在相位解缠中影响判别。因此对叠掩区域进行识别具有重要意义。分析了叠掩区域的干涉相位特性及幅度特性,提出了一种结合SAR幅度图像和干涉相位对叠掩区域进行识别的算法,该算法能够有效的将叠掩区域区分出来,为InSAR后续处理提供可靠依据。仿真数据的处理结果,证明了算法的有效性。
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| 关 键 词： | 干涉合成孔径雷达 叠掩 幅度 干涉相位梯度 |
| 收稿时间： | 2011-03-07 |
| 修稿时间： | 2011-03-07 |
Method for Layover Regions Detection Based on Interferometric Synthetic Aperture Radar |
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| Liu Ningning. Method for Layover Regions Detection Based on Interferometric Synthetic Aperture Radar[J]. Science Technology and Engineering, 2011, 11(17): 3975-3978 |
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| Authors: | Liu Ningning |
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| Affiliation: | LIU Ning-ning~(1,2),XIANG Mao-sheng~1,MAO Yong-fei~(1,2) (National Key Laboratory of Science and Technology on Microwave Imaging,Institute of Electronics,Chinese Academy of Sciences 1,Beijing 100190,P.R.China,Graduate College,Chinese Academy of Sciences 2,Beijing 100039,P.R.China) |
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| Abstract: | Interferometric Synthetic Aperture Radar is an effective technique to get Digital Elevation Model and ortho-photo map. Layover is one of SAR geometric distortion. The interferometric phase of layover region is not accurate due to the superposition of multi-echo, it makes the discrimination difficult in phase unwrapping. This paper analyzed the SAR image amplitude and interferometric phase characteristic of layover region, based on which an algorithm is present for detecting layover regions. This algorithm can effectively distinguish layover regions and provide reliable basis for InSAR processing. Simulation experiments results show effectiveness of this algorithm. |
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| Keywords: | Interferometric Synthetic Aperture Radar layover amplitude phase grads |
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