Signal structure and simulation of Compass satellite navigation system

摘要

Due to China's compass satellite navigation system which is under development, signals will be designed to obey some constraints and cooperate with other satellite system. Binary offset carrier BOC characterizing good correlation, band sharing and spectral separability is proposed for Compass system. Signal structure and development of Compass system is first analyzed in this paper, and then the principles of several BOC modulations are elaborated. The emphasis is put on a characteristic analysis of power spectral density and autocorrelation function. Further, the frequency spectrum of AltBOC modulation is simulated with Matlab due to B2 signal structure. The simulation results will be instructive meaning for compass phase III signal design and engineer implementation.