Design Of Strapdown Inertial Navigation System Based On FPGA

In the paper, we first study basic principle and function of the Inertial Navigation, the theory of calculation on mathematical platform involved in Strapdown Inertial Navigation and solving process of attitude matrix Based on euler angles method are analyzed. This method of Navigation decoding algorithm determined to the basis of the compile. Then, Design of hardware circuit structure and functional unit according to system functionality and performance requirements of the Strapdown Inertial Navigation System.On the basis of the above research, set up the Nios II core and the function module of system use the SOPC Builder. Set up project files and integrated the function module use the Quartus II software. Completed the on-chip system design and compilation and generate the FPGA configuration files and project files. Completed timing simulation of the system function module using Modelsim software and finished the function verification work. At this point the whole navigation system platform finished, then set up the simulation trajectory based on Matlab software and calculating the navigation information use the algorithms, the navigation parameters such as speed, position, posture and errors of the simulation results are obtained. Verify the feasibility of the algorithm.