In order to meet the requirements of miniaturization and real-time performance of navigation system design, this paper proposes an implementation scheme based on FPGA + DSP. The design idea of this scheme is: map FPGA to a section of address space of DSP EMIF, and use FPGA to complete the acquisition of multi-channel signals; DSP completes navigation solution according to the received data and outputs it to the control device and external test equipment in the form of bus (such as CAN). This paper focuses on the hardware and software design of inertial measurement unit, data acquisition and interface circuit and navigation computer; finally, a comprehensive performance test is carried out on the completed test prototype, and the results show that this design can meet the expected design requirements.
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