ESTIMATION OF GPS ZENITH TROPOSPHERIC DELAY BASED ON
TERRAIN AND METEOROLOGICAL ELEMENTS
1)School of Civil Engineering, Central South University, Changsha 410075
2)Hydrogeology and Engineering Geology Prospecting Institute of Heilongjiang Province,Haerbin 150030
Abstract：In order to solve the problem that the InSAR atmospheric correction is limited by the number of SAR image and weather conditions, a new tropospheric delay estimation method is proposed, which is based on the terrain and meteorological elements. The zenith tropospheric delay model is constructed and the zenith tropospheric delay is estimated by taking the GPS network in Beijing as an example. The result shows that the precision of the model is similar to the GPS tropospheric delay, which is amounted to mm, and can meet the requirements of InSAR atmospheric correction.
Liu Yanping,Zhang Lihui,Zhang Feilian. ESTIMATION OF GPS ZENITH TROPOSPHERIC DELAY BASED ON
TERRAIN AND METEOROLOGICAL ELEMENTS[J]. jgg, 2013, 33(3): 59-63.
