MATLAB-Based BeiDou Satellite Signal Processing and Analysis

In this article, we present the design methodology for a universal integrated satellite navigation system utilizing NI USRP hardware. We comprehensively discuss all system components, covering both hardware and software implementations. Specifically, we examine the hardware platform configuration including NI USRP devices, specialized antennas, and other essential peripheral components. Furthermore, we conduct an in-depth analysis of the software architecture, focusing on satellite signal reception algorithms, digital signal processing techniques, data decoding methodologies, and navigation algorithm implementations using MATLAB. The system's signal processing chain involves critical functions such as carrier frequency synchronization, code phase tracking using delay-locked loops (DLL), and navigation data extraction through dedicated demodulation algorithms. For performance evaluation, we implement MATLAB-based testing protocols including signal-to-noise ratio analysis, positioning accuracy assessment using least-squares estimation algorithms, and multipath error mitigation techniques. Additionally, we explore the system's application potential across various scenarios such as precision agriculture, autonomous vehicle navigation, and timing synchronization systems. Through this detailed exposition, readers will gain comprehensive understanding of designing and implementing USRP-based integrated satellite navigation systems with MATLAB programming framework.