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新一代卫星导航信号测量性能分析

, PP. 320-324

Keywords: 载噪比,伪距,载波相位,多普勒

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Abstract:

导航信号的测量性能最终影响系统定位、测速、授时等服务精度,是系统顶层设计的重要论证内容之一.结合COMPASS系统新一代卫星导航信号体制框架设计,分析了各种应用条件下的伪距、载波相位和多普勒测量精度,并以典型设计参数为例进行了数值计算.结果表明,在接收机典型设计参数和工作条件下,各信号分量均能够实现0.1m的伪距测量精度、0.006周的载波相位测量精度以及0.005m·s-1的多普勒测量精度.首次给出的针对新信号体制各项测量性能的研究结果可为卫星导航系统信号体制设计、导航接收机关键参数设计以及卫星导航系统用户测距误差预算等顶层设计提供参考.

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