Satellite navigation signal simulation device and method

The invention discloses a satellite navigation signal simulation device and method, relates to the technical field of satellite navigation. The device aims to realize simulation of satellite navigation signals with different requirements through software on a hardware platform consisting of a digital signal generation module and a radio frequency signal generation module so as to improve the real-time performance, high dynamic performance, reliability and reusability of the satellite navigation signal simulator, reduce the structural complexity and shorten the development period. The satellitenavigation signal simulation device comprises a digital signal generation module used for generating a digital signal; a radio frequency signal generation module, used for converting the digital signal into a radio frequency signal; wherein the digital signal generation module comprises a data storage unit, an ephemeris analysis unit, a navigation message generation unit, a key parameter generation unit, a cache unit and