Analysis on the Influence of BeiDou Satellite Pseudorange Bias on Positioning

Abstract

Pseudorange bias is an important error that affects the quality of satellite navigation signals, and it has a certain influence on the precise orbit determination and user positioning accuracy related to the pseudorange observation. However, there are few studies on the influence of pseudorange bias due to Beidou satellite signal distortion and receiver technical parameters on positioning performance at present. This paper theoretically analyze of pseudorange bias on positioning and draw simulates of results firstly, which shows a consistent result with the theoretical result. Then based on this, the different Beidou satellites pseudorange biases are estimated using IGS station measured data, and analyze the mean and variance of the single point positioning (SPP) error of the Beidou satellite signal. Finally, the work compared the positioning accuracy results with pseudorange bias and pseudorange bias correction. The results show that pseudorange bias will make a certain bias to the mean value of the positioning error, while the variance is almost constant. Correction of pseudorange bias, can improve the SPP accuracy of user receiver Beidou satellite signal.