Computed Transmission Through Rain at Microwave and Visible Frequencies

The Mie extinction properties are of basic importance to those interested in developing an understanding of the influence of rainfall on open air communication systems. In this connection we have generated a rather extensive set of tables of extinction properties of rain. The tables have been used within Bell Laboratories to study a variety of transmission problems, examples of which are the investigation of satellite ground station interference by Gusler and Hogg (1970),* the study of microwave transit time variations by Gray (1970), Pierce's (1909) investigation of the problems associated with the synchronization of digital networks and Setzer's (1969) study of the extinction properties of atmospheric aerosols. 1-4 A set of tables with similar results was published by Medhurst (1965); however, his presentation only includes * T h e attenuation constants used by Gusler and Hogg were based on empirical data. T h e calculated values presented in this paper were used for comparison purposes only. 1873