无线传感器网络节点自定位技术

节点位置信息是许多无线传感器网络应用的基础，节点自定位技术在无线传感器网络中具有重要地位。目前已经出现了各种节点定位算法，其中的KPS算法不需要锚节点和复杂的测距技术，具有一定的优越性，但当网络部署在非理想的环境中时，存在定位精度较低的问题。该文针对这一问题，提出了利用运动学定位方法对KPS算法中的参考节点位置进行修正，从而提高节点定位精度。仿真结果表明，改进算法能够明显提高非理想环境中的节点定位精度。

Self-localization Technology for Wireless Sensor Network Nodes

In wireless sensor networks,sensor location plays a critical role in many application.In the past,a number of location discovery schema have been proposed.KPS has an advantage because anchor nodes and distance/angle measurement among nodes are not involved,but high inaccuracy as compared to others.This paper proposes a new location algorithm to improve the inaccuracy of KPS,and conducts simulations to evaluate the scheme.