利用卫星对明安图射电频谱日像仪的相位校准研究  

Phase Calibration Using Satellite as Calibrator for Mingantu Spectral Radioheliograph

作　　者：王威[1,2] 颜毅华[1,2,3] 刘东浩 苏仓[1,2] WANG Wei;YAN Yi-hua;LIU Dong-hao;SU Cang(National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China;Key Laboratory of Solar Activity of Chinese Academy of Sciences,Beijing 100101,China;University of the Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院国家天文台,北京100101 [2]中国科学院太阳活动重点实验室,北京100101 [3]中国科学院大学,北京100049

出　　处：《电子学报》2019年第6期1384-1387,共4页Acta Electronica Sinica

基　　金：国家自然科学基金项目(No.11433006,No.11790301,No.11790305,No.11773043)

摘　　要：明安图射电频谱日像仪采用综合孔径技术成像的太阳专用射电望远镜,为充分利用望远镜天线单元数量,采用非冗余基线设计,这就要求需要外部信号源进行系统校准.本文介绍了利用同步轨道卫星作为校准源,对明安图射电频谱日像仪进行相位校准的原理,过程和相应的观测结果,分析了卫星作为校准的优缺点、处理办法以及在对图像质量的影响.Mingantu Spectral Radioheliograph (MUSER) is a solar dedicated interferometric array using synthetic aperture imaging technology.There aren’t redund ant baselines in MUSER in order to make full use of these antennas,which requires an external signal source to carry out system calibration.This paper describes phase calibration of MUSER by using the geostationary satellite as calibrator.Some observations and results are introduced as well.We analyzed the advantages and disadvantages of the satellite as a calibrator,as well as the effect onimage quality.

关 键 词：综合孔径 相位校准 卫星 

分 类 号：TN911[电子电信—通信与信息系统]