射电日像仪系统增益校准方法研究  

Study on gain calibration method of CSRH

作　　者：李沙[1] 颜毅华[1] 陈志军[1] 王威[1] 刘东浩[1] 

机构地区：[1]中国科学院国家天文台太阳活动重点实验室,北京100012

出　　处：《现代电子技术》2015年第21期142-144,148,共4页Modern Electronics Technique

基　　金：国家重大科研装备项目(ZDYZ2009-3);青年科学基金(11203042);国家973计划;攀登计划课题(MOST2011CB811401)

摘　　要：提出了一种基于Y因子法对射电日像仪低频阵天线进行系统增益校准实验,并对校准的基本方法及构架进行了详细介绍,给出了射电日像仪低频阵和高频阵天线阵列的UV覆盖图,并利用宁静太阳作为校准源,采用标校源测试方法,对低频阵天线增益进行了测试标校,并给出了初步结果,同时用数据分析其可行性及校准误差。In this paper,a Y factor method is proposed for the gain calibration experiment of LF array antenna on CSRH,whose basic approach and framework are introduced in detail. The UV coverage diagrams of CSRH-I and CSRH-Ⅱ are given.The gain of CSRH- I was tested and calibrated by taking quiet sun as calibration source and using the method of calibration source test. The preliminary results are offered. The feasibility and calibration error are analyzed with the relative data.

关 键 词：幅度校准 幅度一致性 幅度稳定度 幅度误差 

分 类 号：TN82-34[电子电信—信息与通信工程] P111.44[天文地球—天文学]