摘要： 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。

关键词: 无线传感器网络, 定位算法, 锚节点, 质点运动学

Abstract: 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.

Key words: wireless sensor networks, localization algorithm, anchor node, particle kinematics

中图分类号: 

• TP183