北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2011, Vol. 34 ›› Issue (1): 126-129.doi: 10.13190/jbupt.201101.126.zhangyh

• 研究报告 • 上一篇    下一篇

下一代移动通信系统中的无线协同定位技术

张一衡,张昊,邹杰   

  1. 北京交科公路勘察设计研究院有限公司 交通运输部公路科学研究院, 北京 10088
  • 收稿日期:2010-02-22 修回日期:2010-07-12 出版日期:2011-02-28 发布日期:2011-02-28
  • 通讯作者: 张一衡 E-mail:zhangyiheng1980@gmail.com
  • 基金资助:

    十一五国家科技支撑计划项目(2009BAG13A02)

Wireless Cooperative Localization in the NextGeneration  Mobile Communication System

  • Received:2010-02-22 Revised:2010-07-12 Online:2011-02-28 Published:2011-02-28

摘要:

为了解决传统无线定位技术中定位精度不高的问题,针对下一代移动通信系统,提出利用移动台(MS)之间的协同通信对目标MS进行协同定位,并利用非线性最优化理论解决MS协同定位问题,将该问题转化为线性最小二乘问题,最终利用GaussNewton算法估计目标MS的位置. 仿真结果表明,GaussNewton算法在解决协同定位问题时,几乎都能收敛,收敛速度快,平均迭代数为2~3次. 当2个或2个以上的参考终端(RT)参与定位,且RT的测距标准差小于50m时,协同定位均方根误差可控制在100m内.

关键词: 协同定位, 协同通信, 到达时间

Abstract:

To enhance the precision of wireless localization in the traditional mobile network, a wireless cooperative localization algorithm is proposed for the nextgeneration mobile communication system by employing the cooperative communication between the mobile stations (MS). The cooperative localization problem is solved by nonlinear optimization theory. With that this problem is converted to the linear least square problem, finally the location is estimated by the GaussNewton algorithm. Simulation shows that, when GaussNewton algorithm is applied in the cooperative localization, it is almost converged and the times for convergence (the converging speed) is about 2~3. When there are two or more than two reference terminals (RT) involved in the cooperative localization, and the standard deviation of the distance measured by RT is less than 50m, the root mean square error of the location estimate is less than 100m.

Key words: cooperative localization, cooperative communication , time of arrival