摘要
针对现代都市环境中单一的GNSS定位技术无法满足精确定位的难题,结合GPS和DTMB定位技术的优势,给出GPS/DTMB组合定位新系统,研究粒子滤波算法在GPS/DTMB系统中的动态定位跟踪效果.从视距和非视距两种传播环境仿真验证,并对比分析均值和标准差大小.仿真结果表明,在两种传播环境中,粒子滤波算法滤波后的运动轨迹均接近真实轨迹,但视距环境下的动态跟踪效果、均值和标准差均优于非视距环境,且定位误差满足城市环境中的定位精度要求,从而验证了城市环境中采用GPS/DTMB组合定位系统的可行性.
In the modern urban environment,single GNSS positioning technology can＇t meet the accurate positioning.Thus,in this paper,the advantages of GPS and DTMB have been combined to give new integrated positioning system on GPS/DTMB,and to research the dynamic positioning tracking performance of particle filter algorithm in GPS/DTMB system.The results by line-of-sight and non line-of-sight propagation environment have been obtained,and the mean and standard deviation analyzed.The simulation results show that the trajectory of particle filter algorithm is close to the real trajectory in the two kinds of propagation environment,but line-of-sight environment,dynamic tracking effect,the mean and standard deviation are superior to non line-of-sight environments,and the position error can satisfy the demands positioning accuracy of urban environment.Thus the feasibility of using GPS/DTMB integrated positioning system has been validated in urban environment.
出处
《西南师范大学学报（自然科学版）》
CAS
北大核心
2015年第12期98-101,共4页
Journal of Southwest China Normal University(Natural Science Edition)
基金
2014年云南省科技厅青年项目(2014FD048)
关键词
数字电视地面广播
粒子滤波算法
动态定位跟踪
组合系统
digital television multimedia broadcasting
particle filter algorithm
dynamic location tracking
integrated system
