基于电磁波小尺度衰落的移动物体检测

MOVING OBJECT DETECTION BASED ON SMALL-SCALE FADING OF ELECTROMAGNETIC WAVE

随着无线网络技术的发展,出现了针对网络信号能量强度的大量研究。提出一种新颖的基于电磁波小尺度衰落效应的移动物体检测方法。该方法以静止环境中稳定信号能量强度作为依据,通过滚动窗算法捕捉移动物体出现时的小尺度衰落效应,从而实现移动物体的检测。实验结果表明该方法可有效地检测到移动物体,达到100%的检测率。由于该方法仅依赖于电磁波的小尺度效应,因此可在各种无线网络环境中实现。该方法可用于构建安全监控系统,且实施简单,无需专用传感器。

With the development of wireless network technology,there are extensive researches on strength of networks signal power.This paper presents a novel moving object detection method based on effect of small-scale fading of electromagnetic wave.Based on the stable strength of signal power in a quiescent environment,the rolling-window algorithm is applied in the method for capturing the small-scale fading effect caused by the occurrence of moving objects,so that to realise moving objects detection.Experiment results show that this method can detect moving objects effectively,and has a 100% detecting rate.Since the method only depends on the small-scale fading effect of electromagnetic wave,it can be implemented in all kinds of wireless networks.The method can be used to construct the security surveillance system,it is easy to implement,and does not require any specific sensor.