MATLAB-Based GPS Satellite Simulator

This article introduces a MATLAB-based GPS satellite simulator software. The implementation provides comprehensive design specifications, though it currently incorporates several simplifications and unfinished components. The primary objective is to inspire creativity and encourage developers to build upon this foundation for technological advancement. The simulator employs core GPS algorithms including satellite orbit propagation using Keplerian elements, pseudorange calculation with atmospheric delay models, and navigation data encoding. Key MATLAB functions implemented include: - Satellite position computation using ephemeris data - Signal propagation delay modeling - Receiver-satellite geometry calculations - Basic navigation message generation We encourage users to identify limitations during implementation, such as simplified ionospheric models or idealised clock error assumptions, and contribute suggestions for enhancement. Developers are invited to collaborate on improving simulation accuracy, adding features like multi-constellation support, or refining signal processing algorithms. Community contributions will help evolve this tool into a more robust and user-centric solution for GNSS simulation applications.