Title :
Interference experiments between fixed-satellite and terrestrial radio-relay services
Author :
Hatsuda, Takeshi ; Motozumi, Y.
Author_Institution :
Hokkaido Inst. of Technol., Sapporo, Japan
fDate :
1/1/1998 12:00:00 AM
Abstract :
To resolve interference problems between fixed-satellite and terrestrial radio relay services and expand coordination areas between the two services, theoretical and experimental studies were carried out. Theoretical D/U values calculation formulas between the two systems were derived, interference data from 4 GHz and 11 GHz band terrestrial radio-relay systems were obtained by a measuring system mounted on a vehicle. By comparing those results, it becomes clear that the ensemble interference reduction factors for 4 GHz and 11 GHz bands are around 20 dB, which is mixed values of attenuation and reflection from big buildings in urban areas
Keywords :
VSAT networks; electric noise measurement; interference (signal); microwave links; satellite communication; 11 GHz; 4 GHz; attenuation; buildings; fixed-satellite services; interference problems; measuring system; reflection; terrestrial radio-relay services; urban areas; Biomedical imaging; Biomedical optical imaging; Cities and towns; Frequency; Interference; Optical attenuators; Satellite broadcasting; Satellite ground stations; TV; Urban areas;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
