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为了提高无线传感器网络的节点定位性能,对当前定位算法的思想进行分析,提出了一种接收信号强度指示的无线传感器定位算法。首先将接收信号强度指示引入到质心定位中,通过加权因子描述不同锚节点对质心坐标的影响,然后对信号传播路径损耗环境参数的测量过程进行完善,以获得更加准确的接收信号强度指示值,最后采用仿真实验分析其性能。实验结果表明,本文算法较好的解决了定位过程存在一些不足,有效提高节点的定位准确性,且获得比其它定位算法更小的错误,实际应用范围更加广泛。
In order to improve the node localization performance of wireless sensor network, the idea of current location algorithm is analyzed, and a wireless sensor location algorithm for receiving signal strength indication is proposed. First, the received signal strength is introduced into the centroid location, and the weight factor is used to describe the influence of different anchor nodes on the centroid coordinates. Then, the measuring process of signal propagation path loss environment parameters is improved to obtain more accurate received signal strength indication, Finally, the simulation experiment is used to analyze its performance. The experimental results show that the proposed algorithm solves the problems of locating process well, improves the positioning accuracy of nodes and obtains smaller errors than other positioning algorithms, and the practical application scope is more extensive.