David L. Jones, Richard H. Espeland, and Edmond 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; millimeter wave; millimeter-wave propagation; backscatter; depolarization; vegetation

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