Accession Number:

ADP005646

Title:

Singularity Expansion Method: Target Resonances,

Descriptive Note:

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1987-06-01

Pagination or Media Count:

5.0

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.

Subject Categories:

  • Target Direction, Range and Position Finding
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE