矿井UWB路径损耗模型的构建及仿真

采用射线反射模型预测电波传播损耗,建立了矿井超宽带路径损耗模型,并进行了仿真验证。首先对适合窄带信道的射线反射模型进行了分析和仿真,然后结合超宽带信道的频率依赖特点,对射线反射模型进行了修正,建立了矿井UWB路径损耗预测的镜像法反射模型,并对实际UWB测量矿井环境进行了传播损耗预测,将预测结果进行了最小二乘法参量拟合,得到了与测量结果相符的路径损耗指数,验证了预测结果的正确性。

Construction and Simulation of the Path Loss Model for Mine UWB

Using ray reflection models to predict wave propagation loss,a mine UWB path loss model was established and simulation validation was processed.Firstly,the refection model suitable for narrow band channel was analyzed by the simulation,then,combined with the frequency-dependent characteristics of UWB channel,the ray reflection model was modified,the mine UWB path loss prediction mirror reflection model was proposed,and the propagation loss for actual UWB measurement environment of the mine was predicted.Using a least squares curve fit to the data,the path loss exponent n which consisted with the measurement results was obtained,so the correctness of the predictions was verified.