Accession Number:

AD0735291

Title:

Propagation of Millimeter Waves in Rain

Descriptive Note:

Corporate Author:

WASHINGTON UNIV SEATTLE DEPT OF ELECTRICAL ENGINEERING

Personal Author(s):

Report Date:

1971-05-01

Pagination or Media Count:

35.0

Abstract:

The paper considers multiple scattering effects of millimeter wave propagation in rain. Using the multiple scattering theory developed previously by the authors for beam and plane waves propagating in an isotropically scattering discrete random medium, rainfall attenuations were computed for intensities ranging from 0-100 mmhr at wavelengths 3-30 mm. The results are compared with existing measurements in the literature. The good agreement between theory and experiment indicates the general applicability of the theory to rainfall attenuation predictions and area rainfall intensity estimations. The theory also agrees with calculations based on existing theory that accounts for drop size distributions. The difference in attenuation of plane and beam waves propagating in rain of the same intensity has found not to exceed 3 dbKm. The limits of applicability of the theory have also been indicated.

Subject Categories:

  • Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE