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对矿井超宽带多径信道进行预测性频域AR建模.提出将确定性射线反射模型与频域AR统计模型相结合建立矿井超宽带多径信道AR模型的方法.首先按照实测巷道的物理环境、测试条件包括巷道尺寸、测量频率范围、天线尺寸和增益、发射距离等参数通过射线反射模型得到信道的极点信息,然后将矿井巷道的顶板、底板以及两侧壁4个反射面建立4个AR子模型并联后得出整个信道模型,通过建立的频域全极点AR模型最终获得信道的预测结果.结果表明,采用确定性射线反射模型可以得到比较准确的极点信息,信道仿真结果与实测波形吻合,验证了该方法的正确性.
Predictive frequency-domain AR modeling of mine ultra-wideband multi-path channel is proposed, and a method of combining U-band AR model with deterministic ray reflection model and frequency-domain AR statistical model is proposed.At first, according to the measured physical environment of roadway, , The test conditions include parameters such as the size of the tunnel, the frequency range of the measurement, the size and gain of the antenna, the transmission distance and the like. The pole information of the channel is obtained by the ray reflection model. Then four ARs are established on the top plate, the bottom plate and the two sidewalls of the mine tunnel The whole channel model is obtained after the parallel connection of the sub-models, and finally the channel prediction results are obtained through the established all-polar AR model in the frequency domain.The results show that the more accurate pole information can be obtained by using the deterministic ray reflection model and the channel simulation results agree well with the measured waveforms , Verify the correctness of the method.