Abstract:We compare the characteristics of PPPH, MG-APP and GAMP software, select the observation data of six MGEX stations, use the three PPP software to solve the GPS single system and GRCE multi-system precise point positioning, and compare the positioning accuracy, convergence time and tropospheric delay of the three software solutions. The results show that the positioning accuracy and convergence time of GRCE multi-system solved by three software are improved as compared with GPS single system, the positioning accuracy of MG-APP and GAMP is almost the same, while PPPH is slightly worse, and the convergence time of MG-APP is shorter than that of PPPH and GAMP. The GPS and GRCE static precise point positioning calculated by the three software is better than 1 cm horizontally and better than 2 cm vertically. The GPS dynamic precise point positioning calculated by the three software is better than 2 cm horizontally and better than 5 cm vertically. The GRCE dynamic precise point positioning calculated by the three software is better than 2 cm horizontally and is better than 3 cm vertically. The ZTD calculated by the three software are consistent with the ZTD released by IGS, which can meet the accuracy requirements of the ZTD. The stability of ZTD calculated by GAMP is slightly higher than that of PPPH and MG-APP.
WANG Hepeng,GUO Hang,HUANG Cong. Performance Comparison and Analysis of Three Kinds of Multi-System Open Source PPP Software[J]. jgg, 2021, 41(5): 520-524.