一种机载SAR快速几何精校正算法

刘云龙; 李焱磊; 周良将; 梁兴东

doi:10.12000/JR16064

一种机载SAR快速几何精校正算法

doi: 10.12000/JR16064

1.
(中国科学院大学北京 100049)
2.
(中国科学院电子学研究所微波成像技术国家级重点实验室北京 100190)

基金项目:

国家863计划项目(2013AA092105),测绘公益专项(201412002)

详细信息

作者简介:
刘云龙(1988-),男,籍贯河北,中国科学院电子学研究所2014级博士研究生,研究方向为机载SAR精细化定标处理。E-mail:liuyunlong_cau@163.com;李焱磊(1983-),男,籍贯河北,中国科学院电子学研究所助理研究员,主要研究方向为机载差分干涉SAR信号处理。E-mail:yllee@mail.ie.ac.cn;周良将(1981-),男,籍贯湖南,中国科学院电子学研究所副研究员,主要研究方向为合成孔径雷达系统设计与应用技术研究。E-mail:ljzhou@mail.ie.ac.cn;梁兴东(1973-),男,工学博士,中国科学院电子学研究所研究员,研究领域包括高分辨率合成孔径雷达系统、干涉合成孔径雷达系统、成像处理及应用和实时数字信号处理。E-mail:xdliang@mail.ie.ac.cn

通讯作者:
李焱磊yllee@mail.ie.ac.cn

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出版历程
- 收稿日期: 2016-03-28
- 修回日期: 2016-06-22
- 网络出版日期: 2016-08-28

A Fast Precise Geometric Calibration Method for Airborne SAR

1.
(University of Chinese Academy of Sciences, Beijing 100049, China)
2.
(National Key Laboratory of Science and Technology on Microwave Imaging, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)

Funds:

The National 863 Program of China (2013AA092105), The Public Welfare Special Project for Surveying and Mapping (201412002)

摘要

摘要: 几何定位精度是SAR在遥感测绘领域的一个重要技术指标。机载SAR具备高机动性、高分辨率、低成本等方面的优势,是SAR技术发展的一个重要方向。运动误差和地形起伏是机载SAR几何定位的重要误差来源。该文从SAR成像原理和成像几何的角度出发,深入研究了运动误差与地形起伏耦合下几何定位误差的产生机理,并在此基础上提出了一种快速几何精校正方法。仿真实验和实测数据结果验证了该方法的正确性和有效性。
- 机载合成孔径雷达 /
- 几何定位 /
- 残余相位误差 /
- 运动补偿 /
- 运动误差 /
- 地形起伏
Abstract: Geometric positioning accuracy is an important technical indicator for Synthetic Aperture Radar (SAR) in the geomatics domain. Airborne SAR is an important trend in SAR technology due to its advantages of high flexibility, high resolution, and low cost. Motion error and undulating terrain are the major sources of airborne SAR geometric positioning. In this paper, we consider the SAR imaging principle and imaging geometry to carefully examine the mechanism of geometric positioning error caused by the coupling of motion error and terrain fluctuation. Therefore, we propose a fast geometric precision correction method and verify the validity and effectiveness of the proposed method based on simulation results and experimental data.
- Airborne Synthetic Aperture Radar (SAR) /
- Geometric calibration /
- Residual phase error /
- Motion Compensation (MoCo) /
- Motion error /
- Terrain fluctuation

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参考文献(14)

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