本文首先讨论了强反射地带微波天线的最佳挂高与口面尺寸的计算，然后阐述了微波垂直发射角与大气波导发射临界角以及微波垂直发射角的变化量与天线半功率角之间的关系，最后详细地讨论了广播电视微波传输系统信噪比与中断率这两项重要指标的计算方法 This paper first discusses the calculation of the optimum height and mouth size of the microwave antenna in the strong reflection zone, and then elaborates the relationship between the vertical angle of emission of the microwave and the critical angle of the atmospheric waveguide and the vertical angle of variation of the microwave and the half-power angle of the antenna Finally, this paper discusses in detail the calculation methods of two important indexes of signal-to-noise ratio and interrupt rate of the radio and television microwave transmission system