摘要
BOC调制作为一种导航信号体制,具有良好的抗多径和抗干扰性能,同时实现共用载波频率条件下的频谱分离。与BPSK调制信号相比,BOC调制信号具有多径误差小、码跟踪热噪声误差小的优点。通过对BOC调制技术和合路方式的深入分析,给出了各种BOC调制的自相关和功率谱函数,以及各种合路方式的分析比较。通过仿真验证了BOC信号的码跟踪性能和抗多径性能的优越性。
BOC modulation,as a navigation signal system,has such better performances as multipath-resistant and anti-jamming,and it can realize spectrum separation under the condition of carrier frequency being shared.The multipath error and thermal noise error of BOC signals are smaller than that of BPSK signals.Based on in-depth research of BOC modulation technique and combination methods,this paper presents autocorrelation and power density spectrum functions of different BOC signals and different combination methods are compared.The simulation result indicates that the bit tracking and multipath-resistant performances of BOC signals are excellent.
出处
《无线电工程》
2010年第6期34-37,47,共5页
Radio Engineering
