A parameter inversion for sea bridge based on high-resolution polarimetric synthetic aperture radar

LIU Genwang; ZHANG Jie; ZHANG Xi; MENG Junmin; WANG Guoyu

doi:10.1007/s13131-016-0912-z

高分辨率全极化SAR水上桥梁参数反演

doi: 10.1007/s13131-016-0912-z

1.
中国海洋大学, 信息科学与工程学院, 青岛, 266061;国家海洋局第一海洋研究所, 青岛, 266061
2.
国家海洋局第一海洋研究所, 青岛, 266061
3.
中国海洋大学, 信息科学与工程学院, 青岛, 266061

基金项目: The Public Science and Technology Research Funds Projects of Ocean under contract No. 201505002.

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出版历程
- 收稿日期: 2015-06-23
- 修回日期: 2015-10-12

A parameter inversion for sea bridge based on high-resolution polarimetric synthetic aperture radar

1.
College of Information Science and Engineering, Ocean University of China, Qingdao 266061, China;First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
2.
First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
3.
College of Information Science and Engineering, Ocean University of China, Qingdao 266061, China

摘要

摘要: 高分辨率SAR中，桥梁的各次反射回波表现为条带状，这给桥梁参数的反演带来了困难。本文提出了一种适用于高分辨率全极化SAR的水上桥梁参数反演方法。首先，通过极化散射特征区分出桥梁的单次、二次和三次反射回波目标。然后，结合微波反射和折射的原理，分析了高分辨SAR图像中桥梁的各次反射回波成条带状的原因，在此基础上提出了各次回波目标的提取方法和桥梁参数反演方法。最后，利用获取的AIRSAR数据反演了桥梁的上下桥高、桥厚、桥宽、桥长及桥塔高度等参数，通过与实测数据对比，结果表明，本文的方法能较准确地反演桥梁的各项参数，其中桥高误差仅为1.3%，结果也表明了在高分辨率条件下，C和L波段的桥梁参数反演能力相当。
- 高分辨率极化SAR /
- 水上桥梁 /
- 参数反演 /
- 多波段
Abstract: Each reflection return of a bridge over water is displayed as wide stripe in a high-resolution synthetic aperture radar (SAR) image, which lead to difficulties in a parameter inversion. Therefore, a method of bridge parameter inversion is proposed for high-resolution full polarimetric SAR (PolSAR). First, the single, double and triplebounce returns from each component of the bridge are distinguished by the polarization scattering features. Then the reasons which lead to the backscatter echoes of the bridge over water being displayed as stripes are analyzed, using a principle of microwave reflection, as well as an extraction method for each reflection return, and a parameter retrieval method is obtained. Finally, the parameters of the bridge, including the height (top and bottom surfaces of the sea bridge), width, thickness, span, and height of the bridge tower, are retrieved using full polarimetric AIRSAR data. When a comparison of the measured data is completed, the results indicate that the proposed method can invert the parameters with a high accuracy, and that the inversion error of the bridge height (bottom surface) is only 1.3%. Moreover, the results also show that for the high-resolution SAR, the C and L-band images have the same ability in regards to parameter retrieval.
- high-resolution PolSAR /
- sea bridge /
- parameter inversion /
- multiband

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参考文献(19)

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文章访问数: 1076
HTML全文浏览量: 48
PDF下载量: 563
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高分辨率全极化SAR水上桥梁参数反演

doi: 10.1007/s13131-016-0912-z

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A parameter inversion for sea bridge based on high-resolution polarimetric synthetic aperture radar

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