摘要: Known theory is applied to examine the channel transfer function for earth/space propagation paths through the atmosphere and over the frequency range from 10to 350GHz. The associated attenuation and phase-delay characteristics ar... 展开 Known theory is applied to examine the channel transfer function for earth/space propagation paths through the atmosphere and over the frequency range from 10to 350GHz. The associated attenuation and phase-delay characteristics are separated into the contributions of the clear-sky,clouds,and rainfall. From the available meteorological data,the total path attenuation and phase-delay is estimated over the frequency range from 10to 45GHz for selected values of the initial elevation angles from a ground station near Washington,DC. The associated attenuation coefficients (dB/km) and phase-delay coefficients (rad/km) attributable to the clear air,clouds,and rainfall are also described for frequencies up to 350GHz. 收起