DocumentCode :
485108
Title :
Retrieving evaporation duct heights from measured propagation factors
Author :
Douvenot, Remi ; Fabbro, V. ; Fuchs, H.H. ; Essen, Helmut ; Bourlier, Christophe ; Saillard, J. ; Hurtaud, Yvonick
Author_Institution :
ONERA, D??partement Electromagn??tisme et Radar, 2 avenue Edouard Belin, BP 4025, 31055 Toulouse cedex 4, France
fYear :
2007
fDate :
15-18 Oct. 2007
Firstpage :
1
Lastpage :
5
Abstract :
The knowledge of refractivity is very important for coverage prediction. This problem is common above sea, where the particular atmospheric conditions lead to atmospheric ducts which strongly modify the range of the radar compared to the standard atmosphere coverage. The most common duct which is almost always present is the evaporation duct. The aim of this paper is to present two inversion methods to retrieve the evaporation duct height from the propagation factor measured along the propagation path during the Vampira campaign 2004. The two inversion methods considered are the simple quadratic regression and the least-squares support vector machine.
Keywords :
Evaporation duct; least-squares support vector machine; quadratic regression; refractivity from clutter;
fLanguage :
English
Publisher :
iet
Conference_Titel :
Radar Systems, 2007 IET International Conference on
Conference_Location :
Edinburgh, UK
ISSN :
0537-9989
Print_ISBN :
978-0-86341-848-8
Type :
conf
Filename :
4784135
Link To Document :
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