The Design And Realization Of The Dual Antenna And MIMU Integrated Navigation Information Processing Platform

The integrated navigation system overcomes the limitations of single navigation system and is widely used in aerospace and military because of its strong environment adaptiveness and high precision and real-time performance.Based on the integrated navigation of satellite navigation and MEMS_IMU,this paper studies the information processing platform of the dual-antenna and MEMS_IMU integrated navigation system,its main research contents and results are as follows:The overall architecture of the dual antenna and MEMS_IMU integrated navigation system is determined.FPGA is designed as the core of data preprocessing and DSP as the core of data operation and MCU as the core of data recording.Various modules are implemented inside the FPGA.These modules collect the real-time sensor data and implement the time service,transform the serial data into parallel data and provide data interface for DSP.The software design of DSP is implemented.The real-time data reading is realized,the data interface of integrated navigation algorithm is implemented,and the real-time output of integrated navigation is provided.The data recorder based on MCU is designed to record debugging data and result data.SD card driver,file system and DMA management are realized.In view of the performance of the information processing platform of dual antenna and MEMS_IMU integrated navigation system,a variety of verification experiments have been designed.The experimental results show that this information processing platform can accurately receive data,process and calculate real-time data,stably store data.This system has reliable and stable performance,which meets the navigation requirements.