CAJ | 학술논문

提出一种用于室内定位的基于接收信号强度( RSSI)的二次定位方法。首先利用全网中已有节点的信息，建立已知节点的初始路径传播损耗指数，采用统计中值滤波来减少RSSI的粗大误差和干扰，然后利用RSSI初次定位的位置结果对传播损耗指数进行再次修正，最后进行二次定位解算，显著提高了未知节点的定位精度。通过仿真和搭建实验平台验证了该算法的有效性。
제출일충용우실내정위적기우접수신호강도( RSSI)적이차정위방법。수선이용전망중이유절점적신식，건립이지절점적초시로경전파손모지수，채용통계중치려파래감소RSSI적조대오차화간우，연후이용RSSI초차정위적위치결과대전파손모지수진행재차수정，최후진행이차정위해산，현저제고료미지절점적정위정도。통과방진화탑건실험평태험증료해산법적유효성。
A twice location method based on RSSI is presented for indoor positioning. The proposed method estimates the path propagation parameters upon the existing nodes’ information,and a statistics median filter method is used to remove outliers and reduce random error. Then the path propagation parameters are updated by the result of the first RSSI location. Finally,position of the unknown node is determined by second location. The twice location algorithm based on RSSI plays a role under many conditions,and obtains certain positioning precision. We have validated the positioning effectiveness of the method by simulation and experimenting on the embedded platform.