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
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
CLC Number:
ZHANG Zheng-yong; MEI Shun-liang. Self-localization Technology for Wireless Sensor Network Nodes[J]. Computer Engineering, 2007, 33(17): 4-6.
张正勇;梅顺良. 无线传感器网络节点自定位技术[J]. 计算机工程, 2007, 33(17): 4-6.