摘要
由于无线传感器网络的节点是随机放置的,网络的节点数目、节点通讯半径和探测半径与网络的连通性和探测覆盖率之间有着密切的联系.为此,研究了无线传感器网络一个固定区域内连通性问题和探测覆盖率问题.连通性问题采用计算机模拟随机抛撒节点进行连通度测试的方法,给出了节点数、通讯半径和连通概率关系曲线;探测覆盖率问题采用概率模型求解的方法,给出了节点数、探测半径和探测覆盖率之间的公式.以此为基础,给出无线传感器网络节点通讯半径、探测半径和传感器节点数目的设计原则.
The nodes of wireless sensor networks are deployed randomly,so the networks′ connectivity and co-(verage) probability have a strong relationship with node number,radio range and sensor range.Therefore, the connectivity problem and coverage problem of wireless sensor networks are discussed in this paper.Connectivity problem is answered through computer simulation that nodes are randomly deployed and the connectivity is tested.Curves of relation of the node number, radio range and the connectivity reliability are given.Coverage problem is answered by probability model.The relation of node number, sensor range and the detecting coverage probability is given by formula.Based on those, the design principle of radio range, sensor range and number of sensor nodes for wireless sensor networks is given.
出处
《天津大学学报（自然科学与工程技术版）》
EI
CAS
CSCD
北大核心
2005年第1期14-17,共4页
Journal of Tianjin University：Science and Technology
基金
教育部博士学科点基金资助项目(20030056007).
