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基于无线通信基站的三维定位相比于传统GPS定位有着诸多优势,技术有着广阔的应用前景和巨大的商业价值.针对基于无线通信基站的三维定位问题,首先分析建立TOA定位的初步模型.其次,基于对模型时钟误差、非视距传播误差、测量误差的分析,优化方程组的建立策略,基站排序,方程组系数修正的方式,使误差项的影响降到最小.最终由最小二乘法计算出定位结果.实验表明,定位模型的定位精度在1米左右,并且定位精度随基站数目的增多而增高.
Compared with the traditional GPS positioning, the three-dimensional positioning based on the wireless communication base station has many advantages and the technology has broad application prospects and great commercial value.Aiming at the problem of three-dimensional positioning based on the wireless communication base station, a preliminary model for establishing the TOA positioning is firstly analyzed.Secondly, Based on the analysis of the model clock error, non-line-of-sight propagation error, measurement error, the establishment of optimization equations, the base station ranking and the correction of equations coefficient, the influence of error term is minimized. Finally, The experimental results show that the positioning accuracy of the positioning model is about 1 meter, and the positioning accuracy increases with the increase of the number of base stations.