北京航空航天大学学报 ›› 2008, Vol. 34 ›› Issue (09): 1020-1023.

• 论文 • 上一篇    下一篇

8mm波段二维综合孔径微波辐射计(BHU-2D)

薛永,苗俊刚,万国龙   

  1. 北京航空航天大学 电子信息工程学院, 北京 100191
  • 收稿日期:2007-08-16 出版日期:2008-09-30 发布日期:2010-09-17
  • 作者简介:薛 永(1983-),男,河南永城人,博士生,xueyong992708@163.com.
  • 基金资助:

    国家自然科学基金资助项目(40476061);教育部"新世纪优秀人才支持计划"资助项目

8mm band 2-dimensional synthetic aperture microwave radiometer (BHU-2D)

Xue Yong, Miao Jungang, Wan Guolong   

  1. School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2007-08-16 Online:2008-09-30 Published:2010-09-17

摘要: 介绍了二维综合孔径微波辐射计BHU-2D成像原理、系统构成及性能指标、校正方法、部分成像实验及其成像结果.BHU-2D工作在8mm波段,共有10个接收单元,天线阵列为T形结构,接收机为二次变频超外差结构,I/Q解调及相关运算采用了数字方式并通过软件实现,采用点辐射源校正方法及背景对消反演算法校正系统通道间不一致、相关偏置及混叠误差.目前,BHU-2D已经研制完成,并进行了系统测试及成像实验,得到了室内人工场景及人物场景的辐射亮温分布图像.

Abstract: The imaging principle, system structure and characteristics, calibration approach, several imaging experiments and imaging results of 2-dimensional synthetic aperture microwave radiometer BHU-2D (BeiHang University 2-Dimensional) were presented. BHU-2D operates at 8mm wave band and has 10 receiving channels. The antenna array of BHU-2D is T-shape; receivers- configuration is super heterodyne and has two down converters. I/Q demodulation and correlation of BHU-2D were carried out with digital method and by software; the channel unbalance, correlation bias and aliasing errors were calibrated with radiated point source and background drop inversion algorithm. At present, BHU-2D was accomplished and has been undergoing testing and imaging experiments, and the radiometric brightness distribution images of man-made scenes and the person in lab were obtained.

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