基于软件接收机的标量与矢量跟踪算法设计与分析

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. 

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

In this paper, the structure theory and algorithm design between scalar and vector tracking algorithm were studied and compared based on the Matlab 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.