利用GPS测量监测VLBI天线参考点的仿真分析  

Simulation Analysis of Monitoring of VLBI Antennas Reference Point via GPS Observations

作　　者：李金岭[1] 张津维[1,2] 

机构地区：[1]中国科学院上海天文台,上海市南丹路80号200030 [2]中国科学院大学,北京市玉泉路19号甲100049

出　　处：《武汉大学学报（信息科学版）》2013年第12期1387-1391,共5页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(11178024;10973030);探月工程(嫦娥二号)资助项目;上海市科学技术委员会资助项目(06DZ22101);国家863计划资助项目(2012AA121603)

摘　　要：根据VLBI天线旋转状态进行参数化建模以实现天线监测的理念日益受到重视,有望进行全天候、全自动监测而不影响望远镜的正常观测运行时间。为考察原理可行性,设计监测方案和开发资料处理软件,本文在观测方程构建、解算参数设置和约束条件选取等方面提出了新的见解,对利用GPS数据监测VLBI天线进行了仿真分析。It is been an important topic in the field of astrometry and geodesy to monitor the reference point and axis offsets of VLBI antenna with high precision. The common monito- ring method is based on some special restrictions to the rotation mode of antenna, which ab- sorbs much of the effective time during operation of the telescope. Monitoring is also subject to meteorological conditions, and so there are limitations in the actual precision and timeliness of such monitoring. In recent years, the concept of VLBI antenna monitoring based on parameterized modeling of the antenna rotation has gradually become more acceptable, and is expected to perform all-weather and fully automatic monitoring of the antenna without any interruption of normal operation of the telescope. In order to investigate the feasibility of this concept when designing monitoring procedures and to develop data processing software, some insights and analysis concerning the observation equation, the settings of unknown parameters and the application of constraint conditions are presented. A simulation analysis of the VLBI antenna monitoring using GPS data and some preliminary conclusions are given for criticism and reference for readers.

关 键 词：VLBI 参考点 轴线偏差 GPS 仿真分析 

分 类 号：P228.42[天文地球—大地测量学与测量工程] P228.6[天文地球—测绘科学与技术]