Performance Analysis of Satellite Navigation Positioning Service under Ionospheric Scintillation

Abstract

Abstract Satellite navigation signals may be affected by ionospheric anomalies such as ionospheric scintillation and ionospheric storms. These anomalies will lead to fluctuations and delays of signals, and thus affecting the performance of satellite navigation service. How to evaluate the performance of satellite navigation service under the influence of ionospheric anomaly is one of the key issues to ensure the safety of satellite navigation aviation service. To solve this problem, the simulation of satellite navigation signals under scintillation and the performance evaluation of positioning service are studied in this paper. Firstly, the scintillation sequence is simulated based on Cornell model. Then, the influence of scintillation on satellite signal parameters is modeled and a generation approach of intermediate frequency satellite navigation signals under scintillation is proposed. Finally, the performance indicators of normal signal and scintillating signal are quantitatively analyzed by solving the navigation parameters and evaluating the performance indicators of the receiver. Simulation results show that the ionospheric scintillation affects the satellite navigation service performance, with reference to the standard specification requirements. Performance of satellite navigation positioning service is severely affected even only one satellite signal is affected by a common moderate scintillation level.