摘要
针对移动终端精确定位的需求,分析了基于TDOA无线定位技术,将二维的定位推广到三维空间,推导了三维空间的Chan算法。同时,针对TDOA定位技术的准确性与精确的测距密切相关,采用Kalman滤波技术进行优化,获得了准确的终端与各基站的距离差,提升了定位的准确性。仿真结果显示,优化后的三维Chan定位算法,能够获得更加精确的三维定位信息。
According to the needs of pinpointing of mobile terminal, this paper analyses wireless location technology based on TDOA. Extending the existing two-dimensional location algorithms to three-dimen-sional space, we derive the Chan algorithm of 3 di-mension space. The location technology＇s accuracy based on TDOA depends heavily on ranging. Optimiz-ing it with Kalman filtering technology, we could ob-tain an accurate range distance between the terminal and the base station, and improve the location accura-cy. The simulation results show that the 3D-Chan lo-cation algorithm could achieves more accurate 3D lo-cating information.
出处
《现代电信科技》
2014年第11期36-40,4,共5页
Modern Science & Technology of Telecommunications
