Singularity Expansion Method: Target Resonances,
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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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.
- Target Direction, Range and Position Finding
- Radiofrequency Wave Propagation