Title :
Tree attenuation at 869 MHz derived from remotely piloted aircraft measurements
Author :
Vogel, Wolfhard J. ; Goldhirsh, Julius
Author_Institution :
Univ. of Texas, Austin, TX, USA
fDate :
12/1/1986 12:00:00 AM
Abstract :
Tree attenuation results are described based on data acquired from an experiment employing UHF transmissions at 869 MHz between a remotely piloted aircraft and a stationary vehicle. The objective of the experiment was directed toward providing input to the land mobile satellite community where the extent of shadowing from roadside trees represents important information to be used for system design. Single trees were found to attenuate between 10 to 20 dB with an average median attenuation of 12 dB.
Keywords :
Attenuation measurement; Land mobile radio propagation factors; Satellite communication, propagation; UHF radio propagation terrain factors; Vegetation; Aircraft; Attenuation measurement; Electromagnetic scattering; Laboratories; Mobile communication; Optical attenuators; Optical scattering; Polarization; Satellites; Vehicles;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.1986.1143781
