MATLAB Simulation Program for Strapdown Inertial Navigation System (SINS)

In this document, we discuss how to implement a MATLAB simulation program for the Strapdown Inertial Navigation System (SINS). SINS is a navigation technique that determines the position, velocity, and orientation of a navigation system by integrating data from sensors such as accelerometers, gyroscopes, and magnetometers. Through MATLAB simulation programming, we can model the operation of such systems and test their performance under various environmental conditions. The implementation typically involves key algorithms like attitude determination using direction cosine matrices or quaternions, numerical integration for velocity and position calculation, and sensor error modeling including bias and noise compensation. The simulation program structure generally consists of sensor data generation modules, coordinate transformation functions, and navigation solution algorithms that process inertial measurements through mechanization equations. Therefore, this article introduces how to develop a SINS MATLAB simulation program and demonstrates how to use this program to evaluate the performance and accuracy of SINS systems under different operational scenarios.