Title :
Some propagation characteristics of high UHF signals in the immediate vicinity of trees
Author :
LaGrone, A.H. ; Chapman, C.W.
Author_Institution :
University of Texas, Austin, TX, USA
fDate :
9/1/1961 12:00:00 AM
Abstract :
Results are reported of measurements made at very low angles of 2880-Mc vertically-polarized signals over wooded areas, with the elevation angle to the transmitter the principal variable. The effects of one tree and of many trees on the apparent location of a signal source, as determined with a narrow-beam antenna, are reported. A hypothetical direction-finding system is assumed and its pointing characteristics determined.
Keywords :
Radar direction-finding; Radar terrain factors; UHF radio propagation terrain factors; Vegetation; Airplanes; Antenna measurements; Antennas and propagation; Navigation; Poles and towers; Radar; Radio transmitters; Transmitting antennas; UHF propagation; Vegetation;
Journal_Title :
Antennas and Propagation, IRE Transactions on
DOI :
10.1109/TAP.1961.1145049
