Articoli correlati a Estimation of Refractivity: Estimation of Refractivity...

Estimation of Refractivity: Estimation of Refractivity Using Artificial Neural Network and ITU-R models with Atmospheric Parameters At Nigeria - Brossura

Ibeh, Gabriel Friday; Agbo, Godwin Amechi

 
9783659135224: Estimation of Refractivity: Estimation of Refractivity Using Artificial Neural Network and ITU-R models with Atmospheric Parameters At Nigeria
Brossura
ISBN 10: 3659135224 ISBN 13: 9783659135224
Casa editrice: LAP LAMBERT Academic Publishing, 2012

Sinossi

The refractivity profile variation in tropospheric is one of the aspects that influences long-distance terrestrial electromagnetic wave propagation and performance of communication systems. This study is aimed at calculation and estimation of refractivity with tropospheric parameters of relative humidity, absolute temperature and atmospheric pressure using ITU-R model and artificial neural network model for January and October at Minna and Abuja, Nigeria. Validation results are thus, January at Minna: absolute temperature = 0.4313 K, relative humidity = 0.9989 %, pressure = 0.0201 (hpa), and October: absolute temperature = - 0.3146 K, relative humidity = 0.9597 % and pressure = 0.1962 respectively. While January at Abuja: absolute temperature = 0.6907 K, relative humidity = 0.9929 %, pressure = 0.3947 (hpa), and October: absolute temperature = - 0.4291 K, relative humidity = 0.9452 and pressure = -0.5344 respectively. The validation of the correlation coefficient results shows that all the tropospheric parameters have effects on refractivity, but relative humidity has more effect and is merely on October which was attributed to the large quantity of moisture at the troposphere

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L'autore

I am, Ibeh Gabriel Friday, from Idumuesah in Ika North East L.G.A, Delta State, Nigeria. I hold B.Sc Industrial Physics, M.Sc Atmospheric Geophysics, all from Ebonyi State University, Abakaliki, Ebonyi State, Nigeria. My B.Sc was Supervised by Dr. Agbo Peter Ekuma and M.Sc under the Supervision of Dr. Agbo Godwin Amechi.

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Editore
LAP LAMBERT Academic Publishing
Data di pubblicazione
2012
Lingua
Inglese
ISBN 10 
3659135224
ISBN 13 
9783659135224
Rilegatura
Copertina flessibile
Numero di pagine
80
Contatto del produttore
non disponibile
Persona responsabile
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