| 非线性最小二乘超宽带TOA法在室内定位测量中的研究与实现 |
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| 引用本文： | 黄瑞贞.非线性最小二乘超宽带TOA法在室内定位测量中的研究与实现[J].测绘与空间地理信息,2020(4):214-217,224. |
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| 作者姓名： | 黄瑞贞 |
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| 作者单位： | 广东省国土资源测绘院 |
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| 摘 要： | 在现今信息化社会中,人们对于建筑物等室内定位服务的需求日益强烈,超宽带(Ultra Wideband,UWB)定位技术由于其抗多径干扰能力强、系统容量大、传输速率高等特点使之在短距离无线通信以及室内定位等方面受到了广泛的关注。本文利用非线性最小二乘最优估计对超宽带TOA算法进行分析,并通过两组对比实验分别探讨了锚节点的布设形式和目标节点不同位置对定位精度的定量影响。实验表明:最小二乘法能够克服移动中突然的跳点和剧烈的抖动对定位精度的影响,在宽度ω与高度ξ一样的情况下,有一最优间距δ*使得TN定位精度最高;在间距δ与高度ξ一定的情况下,在较为狭窄的室内环境下,ω值越大定位精度越高。
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| 关 键 词： | 室内定位 超宽带 TOA 最小二乘法 |
Research and Implementation of Nonlinear Least Square Ultra-Wideb TOA Method in Indoor Positioning Measurement |
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| HUANG Ruizhen.Research and Implementation of Nonlinear Least Square Ultra-Wideb TOA Method in Indoor Positioning Measurement[J].Geomatics & Spatial Information Technology,2020(4):214-217,224. |
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| Authors: | HUANG Ruizhen |
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| Institution: | (Surveying and Mapping Institute of Department of Natural Resources of Guangdong Province,Guangdong 510500,China) |
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| Abstract: | In today′s information society,people are increasingly demanding indoor positioning services in buildings.Ultra Wideband(UWB)positioning technology is characterized by its strong anti-multipath interference ability,large system capacity,and high transmission rate,which has received extensive attention in short-range wireless communication and indoor positioning.In this paper,the ultra-wideband TOA algorithm is analyzed by nonlinear least squares optimal estimation.The quantitative analysis of the effects of anchoring mode and the different positions of the target nodes on the positioning accuracy is discussed by comparing two sets of experiments.The results show that the least squares can overcome the impact of sudden jumps and violent jitters on the positioning accuracy.In the case of the same widthωand heightξ,there is an optimal spacingδ*,which makes the TN the highest positioning accuracy.In the case of a relatively narrow indoor environment,when theωis larger and positioning accuracy is higher. |
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| Keywords: | Indoor positioning ultra-wideband TOA least square |
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