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用于空间遥感的一种毫米波双通道准光系统

俞俊生;陈晓东;苗俊刚;刘绍华;徐亮;刘小明;苏汉生;魏钦刚;麦源;刘海瑞;白明;   

  1. 北京邮电大学;伦敦大学玛丽皇后学院;北京航空航天大学;
  • 出版日期:2010-08-25 发布日期:2010-08-25

Dual-path Quasi-optical System for Space Remote Sensing

Yu Junsheng1 Chen Xiaodong2 Miao Jungang3 Liu Shaohua1 Xu Liang2 Liu Xiaoming1 Su Hansheng1 Wei Qin'gang1 Mai Yuan1 Liu Hairui1 Bai Ming3 (1 Beijing University of Posts and Telecommunications,Beijing 100876) (2 Queen Mary,University of London,London E1 4NS) (3 Beihang University,Beijing 100191)   

  • Online:2010-08-25 Published:2010-08-25
  • Supported by:
    国防科技工业民用航天科研预先研究项目(C1320061301)

摘要: 准光系统广泛应用于星载遥感系统中。北京邮电大学电磁场国际开放实验室以伦敦大学玛丽皇后学院发明的衍射高斯波束分析(Diffracted Gaussian Beam Analysis,DGBA)算法为基础,设计了可用于空间遥感的一种毫米波双通道准光网络系统,设计指标要求准光系统两路出射波束发散角均为10°(8.68dB波束宽为20°),旁瓣低于-25dB。该准光网络系统已在北京航空航天大学加工并实验测量。算法仿真和实验测量结果都验证了该设计的有效性。

关键词: 双通道准光网络系统, 毫米波, 衍射高斯波束分析法, 空间遥感

Abstract: Quasi-optical networks (QON) were widely used in the remote sensing radiometry system embedded in the satellite platform. Beijing University of Posts and Telecommunications,Queen Mary University of London in collaboration with Beihang University had designed a dual-path QON by using the diffractive Gaussian beam analysis (DGBA) method developed at Queen Mary. The system required an output beamwidth of 20 degrees at-8.68dB with a side lobe below-25dB. Good agreement is achieved between simulation and experiment.