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主要研究基于无线通信网络的三维定位问题.考虑无线电信号的到达时间(TOA)主要受非视距(NLOS)传播等因素影响产生误差,建立的修正最小二乘三维定位模型,能够在任意场景实现准确的室内三维定位.利用基站的空间分布信息,提出基于谱聚类的最优基站选择策略.方法可以利用最少7个基站就能完成终端的精确定位,并且算法复杂度低、收敛速度快,对噪声具有较好的鲁棒性,具有较高的实际应用价值.
The main research focuses on three-dimensional positioning problem based on wireless communication networks.According to the fact that TOA is mainly affected by non-line-of-sight (NLOS) propagation and other factors, the modified least square three-dimensional positioning model can be implemented in any scene Accurate indoor three-dimensional positioning.Using the spatial distribution information of base stations, the optimal base station selection strategy based on spectral clustering is proposed.The method can use a minimum of 7 base stations to complete the terminal’s precise positioning, and the algorithm complexity is low, the convergence speed is fast, Has good robustness to noise and has high practical value.