Simulation and Analysis of Ionospheric Delay Based on BeiDou and GPS Navigation Satellite System

As the main error in the space transmission process, the ionospheric delay is an important factor affecting the positioning accuracy. In this paper, the characteristics of the ionospheric delay Klobuchar model under the geographic system and the geomagnetic system are analyzed. By comparing the actual data, the distribution of BDS and GPS vertical ionospheric corrections in time and region is presented, and a fast and accurate compensation method is proposed which can assist each other. The simulation results show that this method solves the defect that GPS satellites cannot compensate ionospheric delay quickly, and improves the accuracy and stability of positioning.