Collimated beam wave pulse propagation and scattering in vegetation using scalar transport theory

Document Type

Article

Publication Date

6-1-2007

Abstract

This investigation develops a theoretical model for microwave and mm-wave propagation and scattering in vegetation that is based on radiative transfer theory (transport theory). The time-dependent, three dimensional, scalar radiative transport equation is solved (to a high degree analytically and then numerically) for strong forward scattering of a pulsed collimated beam wave in a strong forward scattering environment such as a forest at mm-wave frequencies. The problem analyzed is that of a periodic sequence of Gaussian pulses incident from free space onto a forest region. The forest is modeled as a half-space of randomly distributed particles that scatter and absorb electromagnetic energy. The incident pulse train is taken to be a collimated (cylindrical) beam wave. The theory allows for a comprehensive characterization of the influence of vegetation on the propagation of pulsed beam waves, which includes a description of the attenuation of these beams, their angular spread, their distortion due to pulse broadening, and the determination of out-of-the-beam scattering which was not previously available. The model should be useful for frequencies above 3 GHz. © 2007 IEEE.

Identifier

34250875667 (Scopus)

Publication Title

IEEE Transactions on Antennas and Propagation

External Full Text Location

https://doi.org/10.1109/TAP.2007.897302

ISSN

0018926X

First Page

1599

Last Page

1612

Issue

6 I

Volume

55

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