摘要
危险品运输车流在动态移位中产生动态差分毗邻干扰,卫星定位信号对车流进行监控过程中受到车流位置数据动态差分更新影响较大,对车流的方位估计较为困难。传统方法采用MUSIC参数估计方法估计车流参数,导致车流快拍数动态变化时对车流方位和速度估计不准。为解决这一问题,提出一种基于均匀矩形阵列危险品运输车流建模方法,采用改进的MUSIC算法实现对车流的方位-速度联合估计,达到车流监控的目的。仿真实验表明,采用改进的方位估计算法监控危险物品运输车流,速度和方位参数估计精度提高明显,能为车流监控系统提供准确的数据参考。
The transport of dangerous goods traffic generates dynamic differential adjacent interference in dynamic shift, traffic location data is received with dynamic differential updating and it influence on traffic flow monitoring process of sat-ellite positioning signal, a uniform rectangular flow modeling method is proposed based on array dangerous goods transpor-tation, the flow range-velocity estimation is obtained by using the improved MUSIC algorithm, to achieve the purpose of traffic monitoring. Simulation results show that, the improved range estimation algorithm has better estimation performance, the velocity and range estimation is improved obviously, it can provide accurate reference data for traffic monitoring system.
出处
《科技通报》
北大核心
2014年第8期170-172,共3页
Bulletin of Science and Technology
基金
常州构建全国性智慧物流平台的探索实践(HK2013-1)
关键词
危险物品运输
波束形成
阵列
方位估计
transport of dangerous goods beam forming array DOA estimation
