一种基于RSSI的无源室内定位算法  

A Method of Passive Indoor Positioning Based on RSSI

作　　者：金文清[1] 刘睿莹 Jin Wenqing;Liu Ruiying(College of Mechanical and Electrical Engineering,Jiaxing University,Jiaxing,Zhejiang 314001)

机构地区：[1]嘉兴学院机电工程学院,浙江嘉兴314001

出　　处：《嘉兴学院学报》2018年第6期116-121,126,共7页Journal of Jiaxing University

摘　　要：针对传统室内定位算法均要求被测人或者物必须携带有源器件或电子标签的问题,设计了一种利用无线传感器网络的RSSI来实现无源定位的方法.并根据不同条件下RSSI的变化规律建立了信号传播模型,分析了定位区域内RSSI的变化与各个空间位置的贡献衰减程度之间的关系,实现射频层析成像.该算法摆脱了原有有源器件的限制,通过仿真验证了该室内定位算法的准确性.Most traditional indoor positioning methods require the measured person or object to carry active devices or tags.In order to solve this problem,a method of implementing passive positioning by using the RSSI(Received Signal Strength Indication)of a wireless sensor network is proposed.The signal propagation model is built based on the change rule of the RSSI.The relation between the change of the RSSI in the located area and the contribution attenuation of each position is analyzed and the radio frequency tomography is realized.This method overcomes the previous limitations of active devices and its accuracy is verified by the simulation results.

关 键 词：RSSI 无源定位 射频层析 室内定位 

分 类 号：TN95[电子电信—信号与信息处理]