Performance Evaluation of Atmospheric Delay Inversion by Undifferenced Uncombined Precise Point Positioning

Based on the RTD (Real-time Differential) positioning algorithm, the positioning accuracy of the Beidou-3 signal is analyzed and evaluated, and the algorithm is improved for the new signal to further improve the positioning accuracy of the new signal. This paper innovatively proposes a method to evaluate the performance of pseudo-range positioning by using the atmospheric delay parameters of undifferenced and uncombined PPP (Precise Point Positioning) inversion. It realizes the inversion of atmospheric parameters by server positioning and broadcasts them to the client to improve the pseudo-range difference algorithm of the client. The three-dimensional accuracy of the pseudo-range difference algorithm is improved, and the effectiveness of the method is proved.