Parallel computing-based train positioning test signal generation method

The invention provides a parallel computing-based train positioning test signal generation method. The method comprises the following steps: acquiring an ephemeris file and a railway track data file; defining various test scene parameters, and calculating signal propagation time in a corresponding test scene according to the ephemeris file, the railway track data file and the scene parameters; obtaining a carrier phase and a code phase of a sampling point corresponding to each thread in the CUDA model according to the signal propagation time; calculating a carrier phase and a code phase of a sampling point corresponding to each thread according to a memory structure of a thread model to obtain an intermediate frequency sampling point data stream mixed with a plurality of visible satellites; and broadcasting the intermediate frequency sampling point data flow of the satellite through a radio frequency front end, generating a train positioning test signal in a specific scene, and testing the railway satellite n