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 wireless communication base station has a lot of advantages this technology has a broad application prospect and huge commercial value. First of all this paper sets up a preliminary model of TOA positioning. Then based on analysis of the model errors which include the clock error NLOS error and measurement error the effect of errors is reduced to a minimum through the establishment of strategy optimization equations. Finally this paper uses the least squares method to calculate the positioning result. Experimental results show that the positioning error of this model is about 1 meter and the positioning accuracy increases with the number of base stations.