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基于节点间连通性差异的DV-Hop定位算法

DOI: 10.13190/jbupt.201206.44.zhengjp, PP. 44-49

Keywords: 传感器网络,定位,逆向位置估计,累计误差,连通性差异

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Abstract:

提出一种基于节点之间的连通性差异的算法(CDADV-Hop).首先通过锚节点的逆向位置估计,对锚节点的平均跳距重新进行计算,减少累计误差;然后再根据相近位置具有相似的连通性这一特性,对同一未知节点的不同估计位置进行最大最小值的限定,限定超出感知区域的位置,并计算它们的连通性差异;最后从候选估计位置中找出连通性差异值较小的位置作为最终的估计位置.实验结果表明,在相同的条件下,CDADV-Hop算法相比已有的距离向量-跳距算法具有更高的精度.

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