CAPS (China Area Position System) satellite analog signal generator

The invention discloses a CAPS (China Area Position System) satellite analog signal generator, mainly comprising an upper computer, a baseband signal processing module, a digital to analog converter, a power divider, three radio frequency modules and an output part, wherein the baseband signal processing module is mainly internally provided with a DSP (Digital Signal Processor) information processing module and an FPGA (Field Programmable Gata Array) signal processing module connected with the DSP information processing module; the upper computer is connected with the DSP information processing module of the baseband signal processing module through a serial port, the FPGA signal processing module of the baseband signal processing module is connected to the power divider through the digital to analog converter, three output end of the power divider are respectively connected with the three radio frequency modules, and the output ends of the three radio frequency modules are connected with the output parts. The invention can be used for simulating high-precision satellite navigation signals and signals received by the antennas of receivers in actual environments.