Accuracy Analysis of Baseline Solution Affected by Various Errors
In order to study the influence of different errors on the static data solution of high-accuracy GPS (Global Positioning Sys-tem) based on GAMIT/GLOBK and improve the data solution accuracy. Through experiments,the differences of the coordinate calcu-lation results of the stations in the monitoring control network of a long-span cable-stayed bridge in different calculation parameters and error correction models are analyzed. The experimental results show that the mixed calculation results of different types of base-lines are not as accurate as those of a single baseline type,and different calculation modes should be used to solve the control networks with different types of baselines;the accuracy of the solution results under different tropospheric parameters varies greatly. When the number of tropospheric parameters is set between 8 and 10,the solution accuracy is the highest;the ocean tide and solid tide models have low influence on the solution accuracy,and the solution accuracy is higher by using the IERS10 solid tide model;the accuracy of the coordinate solution of the survey station is not affected by the error of the approximate coordinate of the survey station,and the ac-curacy of the solution will be seriously reduced when the error of the approximate coordinate of the reference station is greater than 6 m.
万方数据
维普
