微波两径传播模型影响因素分析

Analysis of influence factors for the model of microwave two-path propagation

研究微波两路径传播模型效果及影响因素.应用电磁波和天线理论,推导出两径波叠加电场振幅和接收功率的表达式,给出了叠加电场振幅和功率与天线水平距离关系的图像.结果表明,微波两路径传播时,接收点处电场振幅和接收功率都随天线间的距离呈现波动性,天线高度和天线间距离直接地影响接收点电场的振幅和接收功率,但天线间距离的影响更大.

The model effect and influence factors of microwave two-path propagation are studied. By applying electromagnetic wave and antenna theory, two path wave superposition formula is derived by using electric field amplitude and receiving power. The images of the relationship between the amplitude and the receiving power of the superimposed electric field and the horizontal distance of the antenna are given. The results show that when the two path microwave propagates, the electric field amplitude at the receiving point and receiving power with the distance between the antenna fluctuate. Antenna height and distance between antennas affect directly the amplitude of the received electric field and receiving power, but the influence of the distance between the antenna units is greater.