Institute for Telecommunication Sciences
the research laboratory of the National Telecommunications and Information Administration

David L. Jones; R. H. Espeland; E. J. Violette

Abstract: Propagation measurements were made in the Olympic National Forest of Washington state during October 1987 to examine millimeter–wave signal propagation through conifer vegetation. Linearly polarized continuous–wave signals at 9.6. 28.8. 57.6. and 96.1 GHz were used to evaluate attenuation depolarization, and backscattering from conifer trees. Azimuth and elevation scans were conducted for various transmitter heights and path lengths. Results from the measurements are presented and compared with data gathered from similar measurements taken through deciduous vegetation.

Keywords: attenuation; propagation; backscatter; depolarization; millimeter--wave; vegetation


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Disclaimer: Certain commercial equipment, components, and software may be identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses.

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