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干涉式被动亚毫米波成像系统

Passive submillimeter-wave imaging demonstrated by a two-element interferometer

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摘要

通过特殊设计的高精度SMMW器件, 实现了一套基于二单元干涉仪的干涉式辐射计系统.针对该系统的自身特点, 作者提出了点源目标响应定标方法来降低系统误差.系统完成后, 分别进行了干涉条纹实验和点源目标成像实验.经测试, 系统的线性相位误差小于2°, 角分辨率优于0.57°.系统实测性能和理论分析结果一致.以上研究为今后设计高分辨率亚毫米波干涉式成像辐射计提供了重要的参考价值.

Abstract

In this paper, an SMMW interferometric radiometer concept is demonstrated by a two-element interferometer with dedicated high accuracy SMMW devices. Point-source calibration method is introduced in order to reduce instrument errors. Interference fringes and point target images are presented by this SMMW interferometer. The linear phase error of the interference fringes is less than 2° and the angular resolution is better than 0.57°. The measured performance characteristics of the two-element interferometer are consistent with the theoretical analysis. This interferometer demonstrates a new method for passive SMMW remote sensing.

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中图分类号:TN454

DOI:10.11972/j.issn.1001-9014.2016.06.004

基金项目:Supported by the National 863 Program (2013AA122701) and the Scientific Research Fund of the Meteorological Public Welfare Profession (GYHY201506023)

收稿日期:2016-03-21

修改稿日期:2016-09-30

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韩东浩:中国科学院国家空间科学中心 微波遥感重点实验室, 北京 100190中国科学院大学, 北京 100049
刘浩:中国科学院国家空间科学中心 微波遥感重点实验室, 北京 100190
张德海:中国科学院国家空间科学中心 微波遥感重点实验室, 北京 100190
孟进:中国科学院国家空间科学中心 微波遥感重点实验室, 北京 100190
赵鑫:中国科学院国家空间科学中心 微波遥感重点实验室, 北京 100190
张颖:中国科学院国家空间科学中心 微波遥感重点实验室, 北京 100190中国科学院大学, 北京 100049
吴季:中国科学院国家空间科学中心 微波遥感重点实验室, 北京 100190

联系人作者:HAN Dong-Hao(handonghao1124@163.com)

备注:HAN Dong-Hao (1990-), male, Shandong, China, Ph.D. Research interests include sub-millimeter wave applications and the system design of synthetic aperture radiometers.

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引用该论文

HAN Dong-Hao,LIU Hao,ZHANG De-Hai,MENG Jin,ZHAO Xin,ZHANG Ying,WU Ji. Passive submillimeter-wave imaging demonstrated by a two-element interferometer[J]. Journal of Infrared and Millimeter Waves, 2016, 35(6): 656-661

韩东浩,刘浩,张德海,孟进,赵鑫,张颖,吴季. 干涉式被动亚毫米波成像系统[J]. 红外与毫米波学报, 2016, 35(6): 656-661

被引情况

【1】程 航,郑海涛,敬汉丹,李世勇,孙厚军. xW波段三维近场安检成像系统. 红外与毫米波学报, 2017, 36(4): 408-414

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