南京大学学报(自然科学版) ›› 2015, Vol. 51 ›› Issue (6): 12031209.
刘鹍鹏1,2, 姜卫东1*
Liu Kunpeng1,2, Jiang Weidong1*
摘要: 水下传感器网络节点造价昂贵,所处的服役环境恶劣,水下传感器网络仿真是目前常用的重要研究方法.目前,在传感器网络仿真中最常用的布尔模型和概率模型均具有其难以克服的缺点.为了设计一种能同时满足覆盖性能和计算效率要求的节点模型,提出了感知因子(perception factor,PF)的概念;基于PF提出了离散感知因子(discrete perceptual factor model,DPFM)模型、连续感知因子模型(continuousperceptualfactormodel,CPFM)和多环感知因子模型(multiring perceptual factor model,MRPFM).对MRPFM 进行了仿真,与同参数条件布尔模型、连续概率模型(continuous probability model,CPM)进行了覆盖性能对比分析,与布尔模型、CPM、多环概率模型(multi ring probability model,MRPM)进行了算法时间需求对比分析.仿真表明:CPFM 最佳几何部署方式为正三角部署;MRPFM 覆盖性能比CPM 下降不明显,比布尔模型提升显著;MRPFM 计算时间需求比CPM 明显减少,比布尔模型和MRPM 也有较大幅度的减少.MRPFM 有效发挥低概率感应带感知能力,提升了覆盖性能,又减少了计算量.
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