Accession Number : ADP005646
Title : Singularity Expansion Method: Target Resonances,
Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Personal Author(s) : Morgan, Michael A.
Report Date : JUN 1987
Pagination or Media Count : 5
Abstract : A unified treatment of the natural mode representations for induced currents and scattered fields is described using elementary concepts of causalty and superposition. The transient back-scattered field is shown to have the form of a constant coefficient exponential series only in the late-time, after the last directly driven response is received from the scatterer. Prior to this, the early-time response is found to be due to both the direct physical optics fields as well as a sum of modulated natural classification using natural modes. Practical implications of this result, regarding aspect-invariant target classification using natural resonances, are discussed.
Descriptors : *TARGET CLASSIFICATION, *RESONANCE SCATTERING, *ELECTROMAGNETIC SCATTERING, BACKSCATTERING, TRANSIENTS, EXPANSION, TIME, OPTICS, NATO.
Subject Categories : Target Direction, Range and Position Finding
Radiofrequency Wave Propagation
Distribution Statement : APPROVED FOR PUBLIC RELEASE