环焦天线口径面相位分析  

Phase Analysis of Aperture Surface on Circular Focal Antenna

作　　者：胡伟 王锦清[2,3,4] 柳聪 卜朝晖[1] HU Wei;WANG Jin-qing;LIU Cong;BU Zhao-hui(School of Health Science and Engineering,University of Shanghai for Science and Technology,Shanghai 200093;Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030;Key Laboratory of Radio Astronomy,Chinese Academy of Sciences,Nanjing 210023;Shanghai Key Laboratory of Space Navigation and Position Techniques,Shanghai 200030)

机构地区：[1]上海理工大学健康科学与工程学院,上海200093 [2]中国科学院上海天文台,上海200030 [3]中国科学院射电天文重点实验室,南京210023 [4]上海市空间导航与定位技术重点实验室,上海200030

出　　处：《天文学报》2022年第3期65-73,共9页Acta Astronomica Sinica

基　　金：国家自然科学基金项目(A030802);国家重点研发计划(2018YFA0404702、2021YFC2203501);中国科学院关键技术人才项目资助。

摘　　要：环焦天线具有特殊的电磁特性和应用领域.对环焦天线的口径面相位误差进行了理论和仿真分析,推导了馈源和副面位置偏差引起的相位误差、主副面之间的补偿关系以及全息测量中天线转动引起的光程差.研究结果将对环焦天线的精确面形测量和补偿提供理论依据和参考.The annular focal antenna has special electromagnetic characteristics and application fields.The phase error of annular focal antenna is analyzed theoretically and simulatedly.The phase error caused by the position deviation of the feed and the subreflector,the compensation relationship between the main reflector,and subreflector and the optical path difference caused by the operation of the antenna in holographic measurement are derived.The results will provide theoretical basis and reference for accurate surface measurement and compensation of the annular focal antenna.

关 键 词：望远镜 方法:分析 技术:图像处理 

分 类 号：P111[天文地球—天文学]