Modeling and Simulation of Low-cost Integrated Navigation System on Vehicle

Getting simulation for integrated navigation system before implementation of the project can effectively reduce the cost and cycle. In this paper, two low-cost IMUs with different accuracy are simulated, dynamic trajectory of navigation system is generated by spline interpolation technology, the loosely coupled mode combined with extended kalman filter algorithm is adopted. In addition, the mathematical models of virtual IMUs and GPS receiver which based on reference data set are described. This programming is realized by MATLAB language. The result shows that the position and velocity accuracy of the integrated navigation system are significantly improved compared with the only GPS receiver.