English

Assessment of the effects of refractive conditions on electronic warfare in central America

This thesis presents a study of the atmospheric refractivity conditions in the oceanic area arund Central America and a description of the possible propagation effects on surveillance systems. The basic principles of atmospheric refraction are presented along with the techniques used to determine the occurrence of atmospheric ducts and to characterize the type of refractive profiles occurring at a station. Radiosonde data collected by coastal stations in the area were used to establish refractive conditions.

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