Title :
A PC-based UHF propagation study in an urban environment
Author :
Grimmer, J.T. ; Laxpati, S.R.
Author_Institution :
Motorola Inc., Schaumburg, IL, USA
Abstract :
A small-scale study to evaluate the principal modes of propagation for an experimental, beyond-the-horizon UHF link is presented. The propagation channel was characterized statistically in several ways. The data collected exhibited characteristics of both troposcatter and diffraction modes of propagation, with heavy influence from anomalies such as aircraft reflections and ducting. The movement of weather fronts through the region influences the runways used by aircraft, and thus the degree of fading due to aircraft. Weather fronts also influenced the principal mode and characteristics of propagation. The correlation between meteorological conditions and the degree of fading observed was biased by the heavy air traffic and the large beamwidth receiver antenna used.<>
Keywords :
fading; microcomputer applications; radio links; radiowave propagation; statistical analysis; telecommunications computing; tropospheric electromagnetic wave propagation; PC-based UHF propagation study; aircraft reflections; beyond-the-horizon UHF link; diffraction modes; ducting; fading; heavy air traffic; large beamwidth receiver antenna; meteorological conditions; principle propagation modes; propagation channel; small-scale study; statistical characterisation; troposcatter; urban environment; weather fronts; Airports; Data acquisition; Data analysis; Frequency; Histograms; Microcomputers; Monitoring; Statistical distributions; TV; UHF propagation;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-0730-5
DOI :
10.1109/APS.1992.221636
