Open AccessDegradation Analysis of User Terminal EIRP and G/T due to Station‐Keeping Variation of Stratospheric Platform
Author(s) -
Ku BonJun,
Ahn DoSeob,
Baek DongCheol,
Park KwangRyang,
Lee SeongPal
Publication year - 2000
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.00.0100.0102
Subject(s) - stratosphere , antenna (radio) , effective radiated power , environmental science , remote sensing , antenna height considerations , meteorology , engineering , electrical engineering , geology , physics
Wireless communication systems using airship have been proposed in worldwide. The airship will be located at the stratosphere about 20 ~ 23 km above the sea level. The position of airship will vary within the station keeping range with time due to the drag of the wind in the stratosphere. When the earth station antenna has a high gain without the tracking function, the antenna performance may be degraded by a small variation of the airship. This means that variation of airship location could result in serious degradation of the system performance. In this paper, degradation in earth station's Equivalent Isotropic Radiated Power (EIRP) and Gain to noise Temperature ratio (G/T) due to the stratospheric platform movements has been derived by calculating the deviation angle of the main beam directions between the earth station and the platform antenna. In this case, the antenna of the earth station has been assumed circular and/or patch array antennas.