基于传播模型和位置指纹的三维室内无源定位方法

Three Dimensional Indoor Passive Location Method Based on Propagation Model and Location Fingerprint

为了提高对室内窃听窃视设备的可疑信号侦察和无源定位能力,深入研究了非合作室内无源定位技术,通过分析各种室内定位算法后,提出了基于传播模型和位置指纹的三维室内无源定位方法,该方法通过位置指纹定位平面位置,通过传播模型定位高度,两者结合可获得室内三维位置,通过信噪比和幅度多重位置指纹建库与匹配算法研究,采用数据插值进一步提高了定位精度;结合该算法模型,提出了系统的组成与设计,该系统由传感节点、无线网络和信息处理机三部分组成,基于该系统完成了实际定位试验,在传感节点间隔5米的情况下,定位精度可达到3米;该方法对反窃听窃视装备应用和信息安全建设具有重大的现实意义。

In order to improve the suspicious signal reconnaissance and passive location of indoor equipment capacity eavesdropping bur glary, the passive localization technique in non cooperative indoor environment is deeply studied, after analyzing various indoor location algo rithms, three--dimensional indoor passive localization method based on propagation model and location fingerprinting is proposed. The method uses position fingerprints to locate the plane positions and to propagate the localization height of the model, the three dimensional indoor passive location can be obtained alter the combination of the two position, through the research of database building and matching algorithms for signal to noise ratio and amplitude multi position fingerprinting, data interpolation is used to further improve the localization accuracy. Combined with the algorithm model, The composition and design of the system are proposed, the system is composed of three parts： sensor node, wireless network and information processor, and the actual positioning experiment is completed based on the system. When the sensor node is spaced 5 meters apart, the positioning accuracy can reach 3 meters. This method has great practical significance for the anti eavesdropping burglary equipment application and the construction of information security.