RESEARCH ON 4D MODELING FOR ZENITH TROPOSHPERIC DELAYS BASED ON REGIONAL CORS NETWORK
Liu Lilong 1,2) ;Huang Liangke 1,2) ; Yao Chaolong 1,2) ;Yan Wei 3) ; and Liu Guiyun 3)
1)College of Geomatic Engineering and Geoinformatics, GUT, Guilin 541004;2)Guangxi Key Laboratory of Spatial Information and Geomatics，Guilin 541004;3)Institute of Geological Surveying and Mapping of Hunan Province,Hengyang 421001
Abstract：A new model is established for estimation of zenith tropospheric delays from regional CORS data which does not require any meteorological data and only related to the time and position of the station. By compared with the inverse distance weighting method and the remove and recovery method using measured data from Guangxi CORS, the results show a significant improvement on the calculated accuracy with new model, that the average accuracy is about 8.5mm, especially in the rainy day. Besides, the average accuracy of the new model used to estimate the surface PWV values of CORS station is about 1.5 mm.
Liu Lilong,Huang Liangke,Yao Chaolong et al. RESEARCH ON 4D MODELING FOR ZENITH TROPOSHPERIC DELAYS BASED ON REGIONAL CORS NETWORK[J]. jgg, 2012, 32(3): 45-49.
