MATLAB Code Implementation for GPS Simulation

In this article, we introduce a comprehensive GPS simulation tool developed in MATLAB, which offers extensive functionality for navigation system analysis. The software implements coordinate transformation algorithms using mathematical models like WGS-84 to ECEF conversions, enabling users to process coordinate data between different reference frames through functions such as lla2ecef() and ecef2lla(). The pseudorange calculation module employs satellite orbital models and signal propagation algorithms to determine receiver-to-satellite distances, incorporating light-time correction and atmospheric delay computations. For error analysis, the tool implements statistical methods including dilution of precision (DOP) calculations, multipath error modeling, and receiver noise simulation through Monte Carlo techniques. The software architecture utilizes MATLAB's Signal Processing Toolbox for signal generation and Navigation Toolbox for ephemeris data handling, providing a robust platform for evaluating GPS positioning accuracy under various environmental conditions. This GPS simulation MATLAB package serves as a practical solution for enhancing positioning measurements and data analysis outcomes in navigation system development and research.