WANG Man-yi, DING En-jie. Improvement of radio tomography imaging localization algorithm based on WSNs[J]. 2015, 34(4): 127-129. DOI: 10.13873/J.1000-9787(2015)04-0127-03.
基于WSNs的无线层析成像定位算法的改进
摘要
基于无线传感器网络(WSNs)的无源被动定位技术
因无需目标携带任何电子标签
成为当前传感器网络定位领域的研究热点之一。无线层析成像(RTI)定位算法因计算量轻
可实时定位在无源被动定位系统中广泛应用。但目前RTI算法
因未考虑因测量噪声引起的伪位置
这造成目标的真实位置与个数无法辨识。提出使用高斯核滤波的方法消除RTI中的伪位置
实验证明:该方法可行
有效。
Abstract
Device-free localization( DFL) is an emerging technique that can locate targets without taking any electronic tags and becomes a hot topic in the area of localization based on WSNs. Due to light and efficient calculation
radio tomography imaging( RTI) algorithm is widely used in DFL systems. However
the measurement noise
which results in pseudo locations
is not taken into account
which result in actual location and the number of the targets can’t be identified. Gaussian kernel filtering is utilized to remove pseudo locations in RTI
the experiments shows that this method is feasible and effective.