基于软件接收机的标量与矢量跟踪算法设计与分析  

Design and Analysis of Scalar and Vector Tracking Algorithms Based on Software Receiver

作　　者：曾广裕[1,2] 申强[1] 董宇光[3] 李淼[1] 

机构地区：[1]北京理工大学机电工程与控制国家级重点实验室,北京100081 [2]中国航天电子技术研究院空间电子工程中心,北京100094 [3]中国北方工业公司,北京100053

出　　处：《北京理工大学学报》2016年第8期800-806,共7页Transactions of Beijing Institute of Technology

基　　金：国家部委预研项目(40404020402)

摘　　要：以Matlab软件接收机为平台,研究对比了标量与矢量跟踪算法结构原理及算法设计,并分析了两种不同算法在信号短暂遮挡环境下的接收机跟踪性能.建立了基于扩展卡尔曼滤波的矢量延迟/频率锁定跟踪算法模型,分析了矢量跟踪算法控制过程及时间同步问题,分析了标量与矢量跟踪算法在信号短暂遮挡环境下快速重跟性能及其对定位的影响,并进行了半实物仿真.仿真结果表明,矢量跟踪算法不仅具有更好的快速重跟性能,而且接收机的位置检测精度和位置检测平滑度都优于标量跟踪算法.In this paper, the structure theory and algorithm design between scalar and vector tracking algorithm were studied and compared based on the Matlah software receiver, and the tracking performances of the two different algorithms were analyzed under temporary shelter environment. Firstly, the scalar structure and its position principle were analyzed; secondly, a vector delay/frequency lock tracking algorithm model was developed based on extended Kalman filter, and the control process and time synchronization of vector tracking was analyzed. Finally, the rapid re-tracking performance between VDFLL and SDLL tracking algorithm and its influence on the positioning were analyzed. Semi-physical simulation results show that the vector tracking algorithm has better performance on rapid re-tracking and both the accuracy and the smoothness of the position detection are better than the scalar tracking.

关 键 词：软件接收机 矢量跟踪 标量跟踪 全球导航卫星系统(GNSS) 

分 类 号：TN966[电子电信—信号与信息处理]