高分辨率SAR层析成像建筑物叠掩散射体提取

魏恋欢; 廖明生; BALZ Timo; 张路

doi:10.13203/j.whugis20120460

高分辨率SAR层析成像建筑物叠掩散射体提取

¹ 武汉大学测绘遥感信息工程国家重点实验室,湖北武汉,430079

基金项目: 国家自然科学基金资助项目(41174120,61331016)；高等学校博士学科点专项科研基金资助项目(20110141110057)；中央高校基本科研业务费专项资金资助项目(201161902020006)

详细信息

作者简介:
魏恋欢,博士生,主要从事雷达遥感研究。

中图分类号: P237.4;TP753
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出版历程
- 收稿日期: 2012-09-24
- 修回日期: 2014-05-04
- 发布日期: 2014-05-04

Layover Building Scatterers Extraction via High-ResolutionSpaceborne SAR Tomography

¹State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan 430079,China

Funds: The National Natural Science Foundation of China,Nos.41174120,61331016;Research Fund for the Doctoral Pro-gram of Higher Education,No.20110141110057;Fundamental Research Funds for the Central Universities,No.201161902020006.

More Information

Author Bio:
WEI Lianhuan,PhD candidate,specializes in radar remote sensing.

摘要

摘要: 目的阐述了SAR层析成像的基本原理,提出了基于Butterworth滤波的奇异值分解层析算法。利用柏林市高分辨率TerraSAR-X数据进行实验,提取了SAR像元内散射体的数量、位置及反射量,实现了星载高分辨率SAR真实数据层析成像,高程向估计精度达到米级。
- 高分辨率 /
- SAR层析成像 /
- 奇异值分解 /
- Butterworth滤波 /
- 模型选择
Abstract: Objective After the launch of the new generation high-resolution SAR satellites,high quality SAR da-ta of up to meter resolution became available.However,severe layover problems occur especially incomplicated scenarios like dense urban areas,which make high-resolution data interpretation more dif-ficult.SAR tomography(TomoSAR)aims at retrieving distribution of scatterers in the elevation direc-tion and retrieving the corresponding reflectivity inside one resolution cell.In this way,TomoSARcan achieve real and unambiguous 3Dreconstruction.First the basic principles of SAR tomography areillustrated.Then,a Butterworth filter based singular value decomposition method is proposed for To-moSAR processing.Third,experimental results about Berlin Debis Tower are analyzed in detail bycomparing them with real building heights,the estimation precision reaches the meter level.
- high-resolution /
- SAR tomography /
- singular value decomposition /
- Butterworth filter /
- model selection