基于Galileo接收机多径抑制方法比较  

Comparison of multipath mitigation based on Galileo receiver

作　　者：张立芬[1] 田增山[1] 

机构地区：[1]重庆邮电大学通信学院,重庆400065

出　　处：《计算机应用研究》2009年第11期4254-4256,共3页Application Research of Computers

基　　金：国家教育部科学技术研究重点项目(207097);重庆市科委科技攻关项目(CSTC2008AC2073)

摘　　要：为了减小多径信号的影响,目前已经出现了多种方法,但是大多采用特殊限制的多径天线、多天线技术以及载波平滑技术等。然而最重要的多径消除技术是基于接收机内部的相关技术,基于此给出了两种消除多径相关技术,即窄相关技术和高分辨率相关技术,并进行了比较。通过仿真结果可以看出,相关技术对多径有很好的抑制能力,且高分辨率相关技术优于窄相关技术。In order to minimize the influence of multipath signal, several approaches can be taken into account. Among them are the use of special multipath limiting antennas, multi-antenna spatial processing or carrier smoothing to reduce code multipath. However, the most important mitigation approaches are receiver-internal correlation techniques. This paper provided a survey of current receiver-internal correlation techniques which were narrow correlator technique and high resolution correlator code tracking technique. From the simulation results, the receiver-internal correlation techniques are able to minimize multipath, and the high resolution correlator code tracking technique is better than the narrow correlator technique in the multipath mitigation.

关 键 词：伽利略接收机 多径消除 高分辨率相关技术 窄相关技术 

分 类 号：TN967[电子电信—信号与信息处理]