Robert K. Crane

Prediction of Attenuation by Rain

A new model is presented for the prediction of attenuation by rain on either terrestrial or slant earth-to-space propagation paths. The model was developed using geophysical observations of the statistics of point rain rate, of the horizontal structure of rainfall, and of the vertical temperature structure of the atmosphere. The model was tested by comparison with attenuation distribution observations. The results show excellent agreement; the observations differ from model predictions by less than the rms deviations predicted by the model.

Worst‐month rain attenuation statistics: A new approach

The models for worst-month analysis are reconsidered. A new procedure is proposed for the estimation of the expected distribution of annual worst-month statistics from a series of monthly exceedances or from climate zone based rain attenuation models. The new procedure is easy to apply, and the results are consistent with available observations.

Radio-wave propagation

The means by which radio waves move from one place to another. A radio wave is an electromagnetic wa…