摘要
采用Taylor级数展开的方式表征群时延特征,建立了群时延对扩频测距系统测距精度影响的评估模型,推导了测距精度评估参数的数学表达式。利用计算仿真分析了群时延对码跟踪环路输出的相关函数、相关损失、S曲线的影响,为高精度测距系统提供了一种有效的评估手段。
Using Taylor series to express the property of group delay firstly, we set up an evolution model of influence of group delay on the measurement accuracy of spread spectrum ranging system and derived the mathematical expression of the evolution parameters. The influence of group delay on correlation function, related loss and S curve of DLL were analyzed. This paper provides an effective evolution of high precision ranging system .
出处
《兵器装备工程学报》
CAS
2017年第5期118-122,146,共6页
Journal of Ordnance Equipment Engineering
