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dc.contributor.authorAbouAlmal, A.*
dc.contributor.authorAbd-Alhameed, Raed A.*
dc.contributor.authorJones, Steven M.R.*
dc.contributor.authorAl-Ahmad, Hussain*
dc.date.accessioned2016-01-07T10:43:32Z
dc.date.available2016-01-07T10:43:32Z
dc.date.issued2015-07-06
dc.identifier.citationAbouAlmal A, Abd-Alhameed RA, Jones SMR and Al-Ahmad H (2015) New methodology for predicting vertical atmospheric profile and propagation parameters in sub-tropical Arabian Gulf region. IEEE Transactions on Antennas and Propagation. 63(9): 4057-4068.en_US
dc.identifier.urihttp://hdl.handle.net/10454/7645
dc.descriptionYesen_US
dc.description.abstractA new simplified approach is proposed to evaluate the vertical refractivity profile within the lowest 1 km of atmosphere from the analysis of surface refractivity, Ns, in areas where upper air data are not available. Upper-air measurements from the nearest available radiosonde location with similar surface profile to these sites are utilized. The profiles of Ns and refractivity extrapolated to sea level, No, obtained from surface meteorological data using both fixed stations and radiosonde are investigated and compared. Vertical refractivity gradient, ΔN, is evaluated at three atmospheric layer heights within the first kilometer above the ground in addition to propagation parameters relevant to each atmospheric layer. At six sites, different approaches are compared for the analysis of three important parameters; namely effective earth radius factor, k, anomalous propagation probability parameter, β0, and point refractivity gradient at 65 m not exceeded for 1% of time, dN1. The k-factor parameter is investigated using a new weighted average approach of ΔN at 65 m, 100 m and 1 km layers above the ground. The results are compared with the latest ITU maps and tables for the same area.en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttp://dx.doi.org/10.1109/TAP.2015.2452937en_US
dc.rights(c) 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. Full-text reproduced in accordance with the publisher's self-archiving policy.en_US
dc.subjectAtmospheric refraction; Refractivity gradient; Anomalous propagation; β0; Effective Earth radius; Point refractivity gradienten_US
dc.titleNew methodology for predicting vertical atmospheric profile and propagation parameters in sub-tropical Arabian Gulf regionen_US
dc.status.refereedYesen_US
dc.typeArticleen_US
dc.type.versionAccepted Manuscripten_US
refterms.dateFOA2018-07-25T13:53:32Z


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