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中文摘要：
距离估计的精度直接影响着WSN定位的准确度,然而到达信号强度指示（RSSI）的不确定性和目标节点的移动性给动态距离估计带来了现实挑战。鉴于此,提出基于滑动窗口模式匹配的WSN动态距离估计方法。首先测量并得到RSSI的分布特性,并在实际动态距离估计时,充分利用RSSI采样点分布特性间的相关特性,采用基于滑动窗口模式匹配的方法实现高精度的动态距离估计。实验及评估结果表明,该方法可以克服RSSI数据的不确定性,获得较高的动态距离估计精度。
英文摘要：
The accuracy of ranging determines the precision of localization in wireless sensor network.However,the uncertainty of received signal strength indicator（ RSSI） values and the mobility of the wireless sensor node present a serious challenge for dynamic ranging.A novelty dynamic RSSI-based distance estimation method is proposed,which utilizes the pattern matching and recognizing in term of sliding window of RSSI values.Firstly measure and gain the distribution characteristic of RSSI value offline,and then consider the correlation between distribution characteristics of RSSI values is considered.Through pattern matching of sliding window,the high accuracy of dynamic ranging result is realized.The universal experimental results demonstrate that the method can overcome the uncertainty in RSSI values and provide a practical way to improve dynamic ranging accuracy.
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