摘要
为了提高导航频谱资源利用率,取得各系统间好的兼容性和互操作性,近年来BOC、MBOC和AltBOC等信号被包括GPS、Galileo和COMPASS在内的多个全球导航卫星系统采用,与BPSK信号一起播发。而多径误差是卫星导航系统应用中的主要误差源之一。分别对BOC(1,1)、TMBOC(6,1,4/33)、TDDM+BOC(14,2)和BOC(15,10)信号基于窄区相关、Strobe和三种码参考波形技术的多径抑制性能进行分析比较。结果显示,同等条件下,BOC(1,1)、TMBOC(6,1,4/33)和TDDM+BOC(14,2)信号通过W4码参考波形技术处理后取得的多径抑制性能最优;码参考波形技术不适用于BOC(15,10)信号;TD-AltBOC(15,10)信号自身具有很好的多径抑制性能。分析结果为我国北斗用户接收机的多径抑制设计提供了参考。
In order to obtain better spectral efficiency and cooperating ability,the BOC,MBOC and AltBOC modulated signals are applied in several global navigation satellite systems such as GPS,Galileo and COMPASS.The multipath is one of the main error sources in these applications.In this paper,the performance analysis of multipath mitigation is done for the BOC(1,1),TMBOC(6,1,4/33),TDDM+BOC(14,2) and BOC(15,10) signals based on the narrow correlator,Strobe and code correlation reference waveform techniques.The results show that on the same condition,the W4 waveform technique has the best performance for the BOC(1,1),TMBOC(6,1,4/33) and TDDM+BOC(14,2) signals,and the BOC(15,10) signal can achieve the same performance without the W4 waveform technique.
出处
《遥测遥控》
2013年第2期35-40,45,共7页
Journal of Telemetry,Tracking and Command
