机载多维度SAR航空观测系统实验初步进展

周良将; 汪丙南; 王亚超; 朱勇涛; 焦泽坤; 宋晨; 王钟斌; 韩冬; 丁赤飚

doi:10.11999/JEIT220250

机载多维度SAR航空观测系统实验初步进展

doi: 10.11999/JEIT220250

1.
中国科学院空天信息创新研究院北京 100190
2.
微波成像技术国家级重点实验室北京 100190

详细信息

作者简介:
周良将：男，研究员，研究方向为雷达系统设计与信号处理

汪丙南：男，副研究员，研究方向为SAR信号处理与信息处理

王亚超：男，助理研究员，研究方向为SAR数据处理与应用

朱勇涛：男，副研究员，研究方向为SAR系统设计与集成测试

焦泽坤：男，助理研究员，研究方向为SAR 3维成像技术

宋晨：男，助理研究员，研究方向为雷达信号处理

王钟斌：男，博士生，研究方向为干涉SAR数据处理

韩冬：男，博士生，研究方向为SAR 3维成像技术

丁赤飚：男，研究员，研究方向为合成孔径雷达、遥感信息处理和应用系统等

通讯作者:
王亚超　wangyc@aircas.ac.cn

中图分类号: TN957.52
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- 被引次数: 0
出版历程
- 收稿日期: 2022-03-10
- 修回日期: 2020-06-20
- 网络出版日期: 2022-06-27
- 刊出日期: 2023-04-10

Preliminary Process of Airborne Multidimensional Space Joint-observation SAR System

1.
Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China
2.
National Key Laboratory of Microwave Imaging Technology, Beijing 100190, China

摘要

摘要: 随着合成孔径雷达(SAR)技术的发展，从极化、频率、角度和时相等多个维度空间联合观测成为SAR发展的重要趋势，但维度联合观测的系统与实验少有报道。该文概要介绍了机载多维度SAR(MSJosSAR)航空观测系统的能力，归纳总结了该系统的技术特点。提出多维度SAR一致性成像方法，实现多波段成像后的配准精度优于1个像元。分析了多波段极化角度特征谱、多方位角层析3维结构重建、多时相相干变化检测等3种SAR多维观测量的初步实验结果，验证了系统的多维观测能力。
- 机载SAR /
- 多维度SAR /
- SAR一致性成像 /
- SAR 3维成像 /
- 相干变化检测
Abstract: With the development of Synthetic Aperture Radar (SAR) technology, Multidimensional Space Joint-observation, which includes polarimetry, frequency, angle, and time spaces, has become an important trend in SAR development, but there are few reports on systems and experiments about it. In this paper, the capabilities of the airborne Multidimensional Space Joint-observation SAR(MSJosSAR)system are briefly described and the technical characteristics of the system are summarized. A SAR consistently imaging algorithm is proposed and the registration accuracy of Multiband image is better than 1 pixel. The preliminary process of three multidimensional space joint-observations, including multi-band polarization angle feature quantity, multi-aspect tomography three-dimensional reconstruction, are analyzed, multitemporal coherence change detection, which verify the ability of multidimensional space joint-observation.
- Airborne SAR /
- Multidimensional Space Joint-observation SAR (MSJosSAR) /
- SAR consistently imaging /
- SAR 3D imaging /
- Coherent change detection

HTML全文

图 1 机载多维度SAR航空观测系统飞行平台及天线

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图 2 多维度SAR一致性成像极化合成图

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图 3 一致性成像后6个波段的拼接图像

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图 4 一致性成像结果的匹配点坐标差

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图 5 16边形航线及光电厂光学图像

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图 6 多角度合成图

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图 7 P波段不同极化的角度特征图

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图 8 层析航线

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图 9 目标区域4个角度的3维点云

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图 10 多方位角融合后的3维点云

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图 11 Ka波段多时相检测结果

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图 12 X波段多时相检测结果

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表 1 机载多维度SAR航空观测系统参数

类别	P	L	S	C	X	Ka
工作模式	全极化、交轨干涉(C,Ka)、重轨干涉、圆迹
作业距离(km)	10～100
极化方式	全极化
PRF(Hz)	500	2000	1000	500	1000	5000
带宽(MHz)	200	200	300	300	500	900
分辨率(m)	1	1	1	0.5	0.5	0.3

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表 2 一致性成像结果的配准精度

	匹配图像
	Ka-X	X-C	C-S	S-L	L-P
最大坐标差(像素)	0.85	0.66	0.94	0.58	0.50

下载: 导出CSV

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