Abstract:

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.

Key words: CORS, reference frame, International Terrestrial Reference Frame (ITRF), frame networks, antenna radome