Abstract To verify the ambiguity fixing effect of the second generation SBAS experimental platform GATBP PPP service, we correct the satellite hardware delay using the signal deviation correction number associated with the observations, and fix the wide and narrow aisle ambiguities separately using the LAMBDA method to obtain the fixed single-difference ionosphere-free combined ambiguity. We solve the 7 d observations of 10 MGEX stations by PPP using GATBP precision products, and use the results of CODE precision products as reference. The results show that the mean fixed rate of ambiguity for wide and narrow lanes using GATBP products is 95% and 30.2%, respectively, the RMS of horizontal positioning error is better than 10 cm, the RMS of 3D positioning error is better than 15 cm, the RMS of phase observation residuals is better than 3 cm, and the RMS of tropospheric estimation error is better than 1.5 cm. The ambiguity fixed rates of both wide and narrow lanes are above 95% for CODE products, and the residuals of phase observation, positioning errors and tropospheric estimation errors are significantly smaller than those of the former.
WU Jizhong,CHEN Jie. Ambiguity Fixing Effect of PPP Service Provided by the Second Generation Satellite-Based Augmentation System GATBP[J]. jgg, 2023, 43(8): 775-779.
WU Jizhong,CHEN Jie. Ambiguity Fixing Effect of PPP Service Provided by the Second Generation Satellite-Based Augmentation System GATBP[J]. jgg, 2023, 43(8): 775-779.