BPSK/BOC Modulation Signal System for GPS Satellite Navigation Signals

Abstract

With the continuous research and development of the global positioning system in various countries, the requirements for the accuracy and efficiency of GPS signals are getting higher and higher. To improve the performance of GPS signal modulation, this research focuses on the BPSK modulation signal and the BOC modulation signal and introduces the basic principles and practical uses of the two modulation signals. Based on the disadvantage of weak anti-noise of BPSK modulated signal and high ambiguity of BOC modulated signal, two algorithms of signal-to-noise ratio estimation and parallel phase code acquisition are introduced in this paper. By introducing the principles and functions of the two algorithms, the improvement of the optimization algorithm for the two modulated signals is expounded. This paper introduces the working principle of the GPS signal, shows the advantages and future development prospects of the BPSK modulation signal and the BOC signal based on the GPS modulation signal, and compares the two modulation signals with the optimization algorithm. The BOC modulated signal shows superior performance. Combined with the optimization algorithm, high-precision transmission signals can be achieved, but the requirements for the receiver are high. The BPSK modulation signal combined with the optimization algorithm can meet most of the needs in life. Still, it is slightly worse than the BOC modulation signal in the face of high-precision and high-demand signal transmission.