基于加权变尺度法的无线传感器网络定位

Wireless Sensor Networks Localization Based on Weighted DFP Algorithm

针对传统最小二乘法定位精度的不足,将工程控制优化中常用的变尺度法(DFP算法)应用到无线传感器网络定位问题中。该算法避免了计算二阶导数矩阵及其求逆计算,特别是对高维问题具有一定的优越性,从而实现对节点定位的优化计算。仿真实验结果表明,该算法能有效提高节点定位精度。

Aiming at the lack of accuracy in the traditional localization method of least-square, the DFP algorithm is adopted in this paper to solve the Wireless Sensor Networks（WSN） localization problem. The algorithm avoids the calculation of a second derivative matrix and its inverse, especially for high-dimensional problems and achieves the optimization result of nodes localization. Simulation experimental result shows the algorithm can effectively increase the node positioning accuracy.