CORS坐标参考框架更新探讨

A Study of CORS Coordinate Reference Frame Updating

CORS系统运行过程中,由于站点的相对沉降、搬迁、天线更换等原因,导致基准站/网坐标发生了明显变化,必须进行局部站点或站网更新。本文阐述了CORS坐标参考框架的更新原则、方法,针对广东省CORS改造升级过程基准站坐标变化情况,发现了引起基准站坐标变化的天线罩问题,并研究了"偏心观测量"的处理方案;研究解决了个别基准站坐标更新及基准站网坐标参考框架更新问题,保证了广东省CORS系统的持续、高精度运行及站网坐标参考框架的延续。

During the process of operation in CORS,the significant change of coordinate on reference station（s） must be updated for the relative subsidence,station transition,antenna replacement,et al.Firstly,principle and method of CORS coordinate reference frame updating is described in details.Then,antenna radome problem is discovered from the change of coordinate of reference stations in Guangdong CORS,and solution of eccentric observation is discussed.The coordinate updating problems of single station and frame network are studied and solved which guarantee continuous and high-accuracy operation of Guangdong CORS,and continuity of coordinate reference frame.