在地面微波通信中,大气层结引起的多径传播是产生严重衰落和造成通信中断的主要因素。本文从理论上导出了在悬空波导的情况下,在接收点出现大气多径射线所必须满足的两组约束性条件,并用计算机进行了数值计算,讨论了电路参数和波导层结内、外折射指数梯度对多径折射线出现的影响。 In terrestrial microwave communications, multipath propagation caused by the atmosphere is a major cause of severe fading and communication disruption. In this paper, we theoretically derived two constrained conditions that must be satisfied for atmospheric multipath radiation to occur at the receiving point under the condition of a suspended waveguide. The numerical calculation is carried out by computer. The relationship between the circuit parameters and the inner and outer refraction The Influence of Exponential Gradient on the Occurrence of Multipaths.