Computer Engineering and Applications ›› 2011, Vol. 47 ›› Issue (1): 154-155.DOI: 10.3778/j.issn.1002-8331.2011.01.042

• 数据库、信号与信息处理 • Previous Articles     Next Articles

Signal acquisition and simulation on GPS/GLONASS receiver

LIU Yu,ZOU Xing   

  1. College of Physics and Electronic Engineering,Chongqing Three Gorges University,Chongqing 404000,China
  • Received:2010-09-02 Revised:2010-11-11 Online:2011-01-01 Published:2011-01-01
  • Contact: LIU Yu

GPS/GLONASS接收机信号捕获及其仿真

刘 毓,邹 星   

  1. 重庆三峡学院 物理与电子工程学院,重庆 404000
  • 通讯作者: 刘 毓

Abstract: The researches on double mode receivers have become hot points when several constellation systems are completed.The design project of double receiver on GPS/GLONASS is given.GPS/GLONASS signals acquisition is researched in low signal to noise ratio circumstance.GLONASS signals and GPS signals are detected using a FFT-based fast acquisition algorithm and coherent integration with non-coherent integration acquisition algorithm.Finally,signal acquisition algorithm of double receiver is simulated using real signals.It can be seen that GPS/GLONASS double mode receiver is capable of detecting satellite signals in low signal to noise ratio environment,and improves receiver sensitivity.

摘要: 随着多星座系统的组建完成,双模接收机已经成为了研究的热点。给出了GPS/GLONASS双模接收机的总体设计方案,重点研究了低信噪比环境下GPS/GLONASS信号捕获,采用基于快速捕获的FFT算法和相关累加结合非相关累加捕获算法分别对GLONASS信号和GPS信号进行检测。利用真实数据对双模接收机的信号捕获算法进行了仿真分析,结果表明双模接收机能够捕获低信噪比环境下的卫星导航信号,提高了接收机的灵敏度。

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