Satellite navigation system principle simulation method and satellite signal simulator

The present invention relates to a satellite navigation system principle simulation method and a satellite signal simulator, belonging to the satellite navigation simulation field. According to the satellite navigation simulation method provided by the invention, the satellite signal simulator can output two formats of signals which are an intermediate frequency signal and a quasi-real-time signal, wherein the real-time performance of the intermediate frequency signal is poor, the intermediate frequency signal can be used for tracking and capture verification with a loose requirement for the real-time performance, the quasi-real-time signal can be used for verifying an algorithm with a strict requirement for the real-time performance, the simulation of a satellite navigation system principle and the verification of the algorithm can be completed based on a software framework, and at the same time, the simulation cost is low.