Title :
Propagation model for building blockage in satellite mobile communication systems
Author :
Tirkas, Panayiotis A. ; Wangsvick, Chad M. ; Balanis, Constantine A.
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA
fDate :
7/1/1998 12:00:00 AM
Abstract :
A propagation model for building blockage in satellite mobile communication systems is developed. This model characterizes the signal transmitted from a low-Earth orbiting (LEO) satellite when there is an obstruction in the path of the signal. The obstruction is assumed to be a man-made structure. The analysis is performed using the uniform theory of diffraction (UTD). Using this method, both single and double diffractions from the structure edges were included. Direct and reflected rays from the ground and building were also included, whenever the satellite signal was not completely obstructed. The satellite is assumed to be moving along a circular orbit while the receiver is stationary. The normalized signal level (in decibels) and the signal attenuation rate (in decibels per second) are computed. Such information is considered very useful in developing the mobile system´s hand-off algorithm
Keywords :
UHF radio propagation; electromagnetic wave reflection; geometrical theory of diffraction; mobile satellite communication; 1.625 GHz; UHF; UTD; building blockage; circular orbit; direct rays; double diffraction; ground; hand-off algorithm; low-Earth orbiting satellite; normalized signal level; obstruction; propagation model; reflected rays; satellite mobile communication systems; satellite signal; signal attenuation rate; single diffraction; structure edges; uniform theory of diffraction; Artificial satellites; Attenuation; Buildings; Low earth orbit satellites; Mobile antennas; Mobile communication; Performance analysis; Physical theory of diffraction; Reflection; Solid modeling;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
