摘要
介绍了煤矿井下人员TOA(Time Of Arrival)定位的视距LOS(Line Of Sight)环境和非视距NLOS(Non Line Of Sight)环境的两种数学模型。通过基站接收人载报警仪极化波到达的脉冲响应电平来区分视距信号和非视距信号,在非视距环境中的TOA测量值减去NLOS误差后,把非视距环境TOA定位数学模型转化为视距环境TOA定位数学模型求解。该定位算法结构简单,计算量小。经井下实际测试的分析,其结果与算法值相符且定位精度满足要求。
The paper introduces two mathematical models about LOS（ Line Of Sight） environment and NLOS（ Non Line Of Sight） environment of Underground Staff TOA（ Time Of Arrival） positioning. The basic station can receive the pulse response level of the polarized wave sent by man-carried alarm, so a will distinguish the signals of both LOS and NLOS. After TOA measured value in the NLOS environment minus its error, then the solution can be obtained by trans- ferring the mathematical model of TOA position in NLOS environment to the mathematical model of TOA position in LOS environment. This positioning algorithm structure is simple, and the calculation amount is not large. After the analysis of practical test, the result can match the algorithm value and also meet the demand of positioning accuracy.
出处
《机械设计与研究》
CSCD
北大核心
2010年第1期77-79,83,共4页
Machine Design And Research
基金
山西省教育厅高校高科技开发资助项目(20051278
晋教计财[2005]47号)
关键词
井下人员定位
呼救报警
信号到达时延
TOA
视距传播
positioning teh underground staff in coal mine
alarm of asking for help
time delay of signal arrival
TOA
LOS propagation
