基于概率感知模型的区域变精度覆盖分布式算法研究  

Distributed Region Variable Precision Covering Study Based on Probability Perceptual Model

作　　者：孙荣凯[1,2] 周宪英[3] 薛兴亮 

机构地区：[1]海军航空工程学院电子信息工程系 [2]92635部队 [3]92941部队 [4]92768部队

出　　处：《计算机与数字工程》2015年第5期771-775,780,共6页Computer & Digital Engineering

基　　金：山东省自然科学基金项目(编号:ZR2011FQ002)资助

摘　　要：覆盖问题是无线传感器网络完成目标监测和信息获取任务的前提。为了使传感器节点尽可能减少能耗,以延长网络的使用寿命,考虑对重点区域和普通区域进行不同精度的覆盖。采用了概率感知模型,将对被监测区域的覆盖问题转化为对可数个点目标的覆盖问题,然后利用点覆盖算法对区域的变精度覆盖问题进行了研究。最终通过仿真实验,对网络采用变精度覆盖与单重覆盖、多重覆盖的效果进行了比较,验证了区域变精度覆盖的优越性。Region coverage is the basic problem of target monitoring and information acquisition in wireless sensor net- work. In order to reduce energy consumption and prolong the network lifetime, different precisions are chosen to cover gen- eral area and key area. The coverage problem of the monitoring area is turned to the coverage problem of the countable point targets using the probabilistic sensing model. Then the monitoring area coverage problem is discussed by using the coverage algorithm of point target. At last, this paper compares the performance of variable precision covering algorithm with single coverage algorithm and multiple coverage algorithm by means of simulation experiment, and proves the advantage of variable precision covering algorithm.

关 键 词：无线传感器网络 概率感知模型 区域覆盖 变精度覆盖 分布式算法 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]