Establishment Of CORS System And Data Processing Analysis

With the rapid advances in GPS technology popularization and application, it is measured in the city's role has become increasingly important. Currently, the use of multi-station network RTK technology to establish continuous operation of the satellite positioning services integrated system has become a city of one of the hot GPS application development. But in the CORS system GPS observations in joint measurement process, because the baseline length generally more than 50km, conventional baseline solution can not meet the accuracy requirements.Thesis Shenyang CORS system setup and GPS data solver research, including the overall look five parts:(1) Introduction Shenyang KFQCORS system sitting, construction of the base station, data center construction, technical indicators tested;(2) CORS system theory in the study and factors affecting the accuracy of GPS observations, based on the Shenyang to determine the accuracy of the main factors that affect the observation;(3) Through the northern hemisphere different elevations, different latitudes compare the IGS tracking station GPS observations of tropospheric model tropospheric delay correction accuracy;(4) Research Shenyang temperature, barometric pressure, altitude and other meteorological data troposphere, the establishment of Shenyang tropospheric delay model;(5) Using GAMIT precision baseline data decoding software for calculating KFQCORS system data and comparison of the troposphere model with conventional model accuracy in Shenyang area.In this paper, Shenyang meteorological data, calculated in Shenyang tropospheric correction parameters, the final application solution method Hopfield improved tropospheric correction model with GAMIT software combination, weakening the tropospheric delay of GPS baseline solution earth high impact, so that the earth precision upgrade 2-3cm, CORS system implemented in the region, long baseline precision solver to improve accuracy in the earth, to explore a new approach to high-precision GPS static data solver.