北斗B2频点导航信号抗多径性能的分析与仿真  

Analysis and simulation of anti-multipath performance for COMPASS B2 navigation signals

作　　者：王麒玮 龚文斌[1] 任前义[1] 

机构地区：[1]上海微小卫星工程中心,上海201203

出　　处：《电子设计工程》2017年第13期109-113,共5页Electronic Design Engineering

摘　　要：抗多径性能是导航新体制信号评估的一个重要性能指标。针对当前北斗B2频点信号抗多径性能缺少统一评估的现状,文章基于非相干超前减滞后功率法延迟锁定环推导了导航信号的多径误差包络,并对多径误差的平均性能和影响因素进行了仿真研究。研究结果表明,在抗多径性能方面,ACED信号作为北斗体制信号具备更大的优势;窄相关器和更大的信号带宽可以明显的改善导航信号的抗多径性能。Anti-muhipath performance is a very important performance index in new system navigation signals evaluation.Given that the current situation of the lack of uniform accessment of anti-multipath performance of COMPASS B2,this paper derives a formula about multipath error envelope of navigation signal based on Non-coherently early-minus-late power delay lock loop.Then we studies the multipath average performance and influence factors of muhipath error.The result shows that ACED signals have a greater advantage when it is regarded as a system signal of COMPASS, while narrow correlator and wider signal bandwidth can improve muhipath performance obviously.

关 键 词：北斗B2频点 非相干超前减滞后功率法 延迟锁定环 多径误差包络 

分 类 号：TN967.1[电子电信—信号与信息处理]