一种含导频GNSS信号的通道组合捕获检测量的设计与优化  

A design and optimization of channel combining acquisition detection with GNSS signal containing pilot channel

作　　者：林红磊[1] 唐小妹[1] 刘瀛翔[1] 王飞雪[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《中南大学学报（自然科学版）》2014年第4期1105-1112,共8页Journal of Central South University:Science and Technology

基　　金：教育部新世纪优秀人才支持计划项目(NCET-08-0144)

摘　　要：新体制导航信号中大多含有导频通道,通过对含导频信号的组合捕获检测量的分析,证明导频与数据通道的相干组合检测量是非相干组合检测量和差分组合检测量的一种二次组合形式;设计一种通用的组合捕获检测量;利用分段相关-视频积累的优化方法,建立该检测量的二维优化模型,并给出相应的优化方法,得出最优设计参数随信号载噪比、多普勒容限及导频功率系数的变化规律。Modern GNSS signals usually contain pilot channels. As to the design of channel combining in signal acquisition, the conclusion that the coherent channel combining detection is a combination of non-coherent channel combining and differentially coherent channel combining detection was proved, then a universal combining acquisition detection was designed. With the optimum method of segment correlation-video integration, an optimum model of this common detection was given and the rules of optimum parameters changing such as signal carrier noise ratio （CNR）, doppler frequency and the radio of pilot power in the whole signal were obtained.

关 键 词：导频通道 通道组合 通用检测量 优化设计 

分 类 号：TP967.1[自动化与计算机技术]