基于几何约束关系的ML模型求解三维坐标定位问题研究

浏览次数： 11

分享到:

摘要:

为了提高三维空间位置定位算法的性能和准确性,提出了以3个基站定位原理为基础的基于几何约束关系的ML模型.通过设计基站位置、到达时间(time of arrival,TOA)数值、手持终端位置之间的几何关系,估计得到手持终端的全部可能位置,通过最大似然算法,以最大可能的估计值确定为定位结果.经过仿真计算验证了算法能有效抑制非视距环境(non-line of Sight,NLOS)误差和测量误差,并且能够得到最佳估计值,具有计算量小、精度高等优点.仿真结果表明了该方法的有效性,在各类室内定位系统中具有很强的实用性.

In order to improve the performance and accuracy of the 3D spatial location algorithm, this paper proposes a ML model based on the geometric constraint relationship based on the positioning principle of three base stations. Through the design of base station location, TOA, handheld terminal numerical geometric relationship between locations, estimated by the handheld terminal all possible position, through the maximum likelihood algorithm to estimate the maximum possible value to determine the positioning results. The simulation results show that the algorithm can effectively suppress the NLOS error and the measurement error, and can get the best estimation value. The simulation results show the effectiveness of the proposed method, and it has strong practicability in various indoor positioning systems.

作者:

张雷

Zhang Lei(College of Mathematics and Statistics. Chongqing Jiaotong University, Chongqing 400074,Chin)

机构地区:

重庆交通大学数学与统计学院

出处:

《betway官方app 学报：自然科学版》 CAS 北大核心 2017年第4期104-110,共7页

基金:

国家自然科学基金(11501065 11401061) 重庆市基础与前沿研究计划项目(cstc2015jcyjA00033) 重庆市教委项目(KJ1600504 KJ1600512)

关键词:

三维空间定位 ML模型几何约束

3D positioning ML model geometric constraint