高动态环境下GPS信号跟踪算法  

Research on GPS Signal Tracking Algorithm in High Dynamic Environments

作　　者：陈跃鹏[1,2] 李东光[1] 崔占忠[1] 杨鹏飞[3] 

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]中北大学机械工程与自动化学院,太原030051 [3]北方自动控制技术研究所,太原030006

出　　处：《火力与指挥控制》2011年第7期25-27,共3页Fire Control & Command Control

基　　金：国家部委基金资助项目(9140003606001)

摘　　要：在GPS导航定位系统中,高动态环境下产生的多普勒频移直接影响接收机跟踪性能。为了克服多普勒频移影响,对高速飞行旋转体GPS接收机跟踪环路进行研究。根据高速飞行旋转体GPS接收机载波信号的数学模型,提出在GPS接收机跟踪环路建立包含姿态信息的载波信号卡尔曼滤波模型,并对环路的跟踪性能进行MATLAB仿真。结果表明,此算法的跟踪环路带宽窄,能有效抑制噪声干扰,较好地实现了对旋转信号的跟踪。In GPS navigation and positioning system,Doppler frequency shift is the key problems that degrade the tracking performance of the receiver in high dynamic environments.To overcome the influence of Doppler shift,the paper studies the tracking loop of GPS receiver mounted on high-speed rotating body. According to the carrier signal mathematical model of high-speed rotating body＇s GPS receiver,the establishment of carrier signal Kalman filter model which contains attitude information in GPS receiver tracking loop is proposed,and the capability of tracking loop is simulated via MATLAB.The results show that the algorithm of the tracking loop bandwidth is narrow which can suppress noise effectively,realize better tracking of rotation signal.

关 键 词：GPS卡尔曼滤波算法 跟踪环路 旋转 

分 类 号：TN911[电子电信—通信与信息系统]