Protection Value of Tropospheric Radio Refractivity over Nigerian Atmosphere
نویسندگان
چکیده
منابع مشابه
Refractivity of a Standard Atmosphere
stronomical observations near the horizon have historically been made for naval navigation and for determining the time of sunset. Recent applications include near-horizon daytime scene simulation to support infrared search and track and infrared seeker studies. The ray path of the setting or rising Sun can be highly distorted near the horizon, and it is seldom rectilinear. An accurate model of...
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Radio refractivity plays a significant role in the development and design of radio systems for attaining the best level of performance. Refractivity in the troposphere is one of the features affecting electromagnetic waves, and hence the communication system interrupts. In this work, a modified artificial neural network (ANN) based model is applied to predict the refractivity. The suggested ANN...
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In coastal regions the presence of the marine boundary layer can significantly affect RF propagation. The relatively high specific humidity of the underlying “marine layer” creates elevated trapping layers in the radio refractivity structure. While direct sensing techniques provide good data, they are limited in their temporal and spatial scope. There is a need for assessing the three-dimension...
متن کاملTropospheric O3 over Indonesia
A. Ladstätter-Weißenmayer, J. Meyer-Arnek, A. Richter, F. Wittrock, and J. P. Burrows Institute of Environmental Physics, University of Bremen, P.O. Box 330440, D-28334 Bremen, Germany Received: 26 January 2005 – Accepted: 15 April 2005 – Published: 19 May 2005 Correspondence to: A. Ladstätter-Weißenmayer ([email protected]) © 2005 Author(s). This work is licensed under a Creative Co...
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ژورنال
عنوان ژورنال: Physical Science International Journal
سال: 2020
ISSN: 2348-0130
DOI: 10.9734/psij/2020/v24i830208