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使用点渗流网格建模无线传播信道,使用酒徒行走模型建模电磁波在传感信道中的传播过程。酒徒经过k步后,得到某个扇区内取向角均匀分布的随机游走的平均行走距离。在此基础上,得到随机射线在传播空间给定位置的概率分布,最后使用随机射线方法得到了放大传送模式下传感网络的路径损耗模型。该模型中出现指数为1.75的距离r的对数函数形式,以及距离的线性项,该项作为新模型的修正项。
The point-propagation mesh is used to model the wireless propagation channel, and the model is used to model the propagation of electromagnetic waves in the sensing channel. The drunkard, after k steps, gets the average walking distance of a random walk with an evenly distributed orientation angle within a sector. On this basis, the probability distribution of random ray in a given position of propagation space is obtained. Finally, the path loss model of sensing network in amplified transmission mode is obtained by using random ray method. In the model, the logarithmic function of the distance r with an index of 1.75 appears, and the linear term of the distance appears as a correction term for the new model.