基于RSSI和TOA融合的矿井人员精确定位方法

摘要

An accurate positioning method for mine personnel based on RSSI and TOA is proposed.The characteristics of ranging accuracy of the RSSI technology and the TOA technology are analyzed.The mine personnel positioning method based on RSSI in the short distance and TOA in the longer distance is put forward.Based on this,the error suppression algorithm based on modified Kalman filtering is provided to achieve the high accuracy of mine personnel positioning.The experiment result shows that the positioning error of this method is less than 3 m in the range of the distance between base station and positioning card being no more than 40 m.%提出了一种基于RSSI和TOA融合的矿井人员精确定位方法.分析了RSSI技术和TOA技术测距精度特性,提出了近端基于RSSI测距、较远端基于TOA测距的矿井人员定位方法,在此基础上提出了改进卡尔曼滤波误差抑制算法,保证高精度矿井人员定位.实验结果表明,在基站与定位识别卡距离不超过40 m的范围内,本文定位方法的定位误差为3 m以内.