一种新的sin-BOC(kn,n)信号边峰消除方法

A Novel Sidepeak Cancellation Method for Sin-BOC(kn,n)Signals

现代化全球卫星导航系统(Global navigation satellite system,GNSS)引入二进制偏移载波(Binary offset carrier,BOC)调制信号作为新型调制技术。在实际应用中,BOC信号的自相关函数具有的多峰性特征所引发的模糊度问题亟需解决。在此背景下,提出一种新的sin-BOC(kn,n)边峰消除方法。理论分析结果表明,所提方法能够有效完整保留sin-BOC(kn,n)信号的窄峰特性,同时消除边峰,解决捕获跟踪过程中的模糊度影响。性能分析实验结果表明,上述方法在边锋消除有效性、鉴相曲线、检测概率和峰均比等方面较BPSK-like、SCPC和ASPeCT方法有一定程度的提升。

The modern global navigation satellite system(GNSS)introduces the binary offset carrier(BOC)modulated signal as a new modulation technology.In practical applications,the problem of ambiguity caused by the multimodality characteristic of the BOC signal autocorrelation function needs to be solved urgently.In this background,this paper proposes a new side peak elimination method for sin-BOC(kn,n)signals.Theoretical analysis results show that this method can effectively retain the narrow peak characteristic of sin-BOC(kn,n)signals.At the same time,it can eliminate side peaks,and solve the ambiguity effect during the acquisition and tracking process.The performance analysis experiment results show that this method has improved in the effectiveness of side peak elimination,phase discrimination curve,detection probability,and peak-to-average ratio when compared with BPSK-like,SCPC,and ASPeCT methods.