GPS Signal Tracking Simulation with Implementation Details

This paper presents a sophisticated GPS signal tracking simulation program that accurately replicates the entire GPS signal tracking process. While the program includes detailed flowcharts illustrating the tracking sequence, we can further elaborate on its core functionalities and practical applications. The simulation employs key algorithms such as delay-locked loops (DLL) for code tracking and phase-locked loops (PLL) for carrier tracking, implemented through mathematical modeling of correlation operations between local replica signals and incoming GPS signals. The program serves as an educational tool to help users comprehensively understand GPS signal tracking mechanisms, providing hands-on experience with parameter tuning for tracking loops, signal acquisition thresholds, and noise performance analysis. Additionally, we discuss the development background and the developers' proactive approach to creating this simulation, highlighting its advantages including modular code structure for easy customization, real-time performance monitoring capabilities, and support for various GPS signal formats including L1 C/A code and modernized signals. The implementation features configurable parameters for signal-to-noise ratios, Doppler shift compensation, and tracking loop bandwidths, making it suitable for both academic research and practical GPS receiver design validation.