GNSS接收机的伪距平滑技术研究  

Research on Pseudorage Smoothing Technology of GNSS Receiver

作　　者：赵胜 魏亮 段召亮 

机构地区：[1]河北省卫星导航技术与装备工程技术研究中心,河北石家庄050081

出　　处：《无线电工程》2010年第4期32-34,共3页Radio Engineering

基　　金：国家高技术研究发展计划(863计划)(2007AA12Z330)资助项目

摘　　要：伪距测量是GNSS接收机的关键技术,对导航定位的精度具有重要影响。为了提高伪距测量的精度,主要从不同的角度详细研究了2种伪距平滑技术:载波相位平滑伪距算法、基于自适应卡尔曼滤波的伪距平滑算法,阐述了2种算法的原理和使用方法;并将其应用于工程实践,给出了试验数据和曲线。试验结果表明,该2种算法各有优点,均可以很好地提高伪距测量的精度,对GNSS接收机的精确定位和导航具有一定的现实意义。Pseudorange measurement is the key technology of GNSS receiver,having the significant effect on the navigation positioning accuracy.In order to enhance the accuracy of pseudorange measurement,this paper mainly studies two kinds of techniques from different perspectives,which are the phase-smoothed pseudorange algorithm and pseudorange smoothing algorithm based on adaptive Kalman filter.The principle and usage of two algorithms are elaborated and applied to the engineering practice and the experimental data is analyzed.The results of experiment indicate that the two algorithms all have advantages and can improve the accuracy of pseudorange measurement.This is very meaningful to accurate position and navigation of GNSS receiver.

关 键 词：GNSS 伪距 载波相位 自适应卡尔曼滤波 

分 类 号：TN967.1[电子电信—信号与信息处理]