MATLAB Implementation of GPS Signal Acquisition Using Serial Search Algorithm

This document describes a GPS signal acquisition program implemented in MATLAB. The program utilizes a serial search algorithm to detect and acquire GPS signals, and includes three segments of intermediate frequency (IF) sampled data for immediate processing. The implementation involves cross-correlation between locally generated PRN codes and the incoming IF signal across different frequency bins and code phases. Key functions include generating CA codes, performing Fourier transforms for frequency domain correlation, and threshold detection for signal validation. The acquired data can be further processed to extract detailed GPS signal information, such as calculating satellite positions and velocities using navigation message decoding and ephemeris data processing. The processed results can contribute to creating more accurate GPS mapping systems. Additionally, this acquisition program has applications in various fields including UAV navigation systems, precision positioning technologies, and timing synchronization applications. The MATLAB implementation provides a modular structure with configurable parameters for sampling frequency, integration time, and detection thresholds, making it adaptable for different receiver configurations. Overall, this GPS signal acquisition program serves as a valuable tool with broad applicability across multiple technical domains, offering a foundation for developing advanced GPS-based solutions.