自适应三边定位算法在航站楼内的应用  

Application of Adaptive Three-Sided Positioning Algorithm in Terminal Building

作　　者：丁亚男 张旭[1] 徐振国 汤健 Ding Yanan;Zhang Xu;Xu Zhenguo;Tang Jian(Air Transport College,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学航空运输学院,上海201620

出　　处：《激光与光电子学进展》2022年第2期433-440,共8页Laser & Optoelectronics Progress

摘　　要：为解决航站楼内非视距误差降低三边定位算法精度的问题,提出自适应三边定位算法。该算法通过引入平均差作为基站选择的标准,选择距离平均差最小的三个基站,提升了基站到标签距离信息的可靠性。并以欧氏距离判断三边定位算法中两圆的位置关系,结合位置判断系数和平均差来修正误差可能性大的圆半径。设计迭代更新圆半径的流程,以两圆相交点距离10 cm为迭代停止阈值,将三圆交点的外接圆的圆心作为标签的位置。添加高斯噪声来近似非视距误差,通过仿真实验验证算法的有效性,在10%高斯噪声下,标签定位误差为10.5 cm。并搭建实际旅客定位系统,实验验证本文算法的标签定位精度小于10 cm,较加权质心法,本文算法的定位误差在X、Y、Z方向上降低了13%。The non-line-of-sight error in the terminal can lower the accuracy of the trilateral positioning algorithm.To address this issue,an adaptive trilateral positioning algorithm is used.By introducing the mean difference as the standard of base station selection,the algorithm selects the three base stations with the smallest mean distance difference and improves the reliability of the base station to label distance information.In the three-sided positioning algorithm,the Euclidean distance is used to decide the position relationship between the two circles,and the radius of the circle with a high error possibility is corrected by combining the distance information.Then,the circle’s radius is iteratively updated.The distance between the intersection points of two circles is set to 10 cm as the iteration threshold,and the center of the circumscribed circle at the intersection point of three circles is used as the label’s position.Simulation experiments are used to validate the algorithm’s effectiveness after adding Gaussian noise to approximate the non-line-of-sight error.Under 10% Gaussian noise,the tag positioning error is 10.5 cm.Finally,an actual passenger positioning system experiment is constructed to verify that the tag positioning accuracy of the proposed algorithm is less than 10 cm,and position error of the proposed algorithm is 13% lower than that of the weighted centroid method in X,Y,and Z directions.

关 键 词：遥感 自适应三边定位算法 非视距误差 航站楼 室内定位 超宽带 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]