| 蜂窝网移动定位场强法的研究与应用 |
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| 引用本文： | 计征宇,皮亦鸣,舒金表.蜂窝网移动定位场强法的研究与应用[J].全球定位系统,2005,30(4):18-22. |
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| 作者姓名： | 计征宇 皮亦鸣 舒金表 |
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| 作者单位： | 电子科技大学电子工程学院701-4信箱,四川,成都,610054 |
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| 摘 要： | 从场强的传播模型和定位估计算法出发，实现了在蜂窝网络中移动终端的定位。利用终端大量的实测数据在Okumura Hata模型的基础上建立了相对精确的传播模型。然后从减少场强的非视距影响着手，提出了基于场强概率密度函数和最大似然估计法的定位算法。
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| 关 键 词： | 场强 定位 最大似然估计 蜂窝网 |
| 文章编号： | 1008-9268(2005)04-0018-05 |
| 修稿时间： | 2005年1月17日 |
Application and research of mobile location technology based on signal strength in cellular network |
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| JI Zheng-yu,PI Yi-ming,SHU Jin-biao.Application and research of mobile location technology based on signal strength in cellular network[J].Gnss World of China,2005,30(4):18-22. |
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| Authors: | JI Zheng-yu PI Yi-ming SHU Jin-biao |
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| Abstract: | This paper introduces a method to locate the position of mobile terminal in cellular network by using signal transmitting model and location algorithm.First,a more precise signal transmitting model is established based on the Okumura Hata model and a lot of measurement data.Then,in order to degrade the disadvantageous influence of non-line-of-sight propagation of radio wave on location perfomance,an improved location algorithm is presented based on the PDF of signal strength and estimation methods based on maximum likelihood fuction. |
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| Keywords: | Signal strength location estimation method based on maximum likelihood function cellular network |
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