Accession Number:

ADA030786

Title:

An Approach to the Limited Aperture Problem of Physical Optics Farfield Inverse Scattering

Descriptive Note:

Technical rept.

Corporate Author:

DENVER RESEARCH INST CO DIV OF MATHEMATICAL SCIENCES

Personal Author(s):

Report Date:

1976-08-25

Pagination or Media Count:

47.0

Abstract:

The limited aperture problem of physical inverse scattering is examined i.e., the problem of identifying a target from an analysis of band- limiting viewing apertures. The target may be completely identified from an analysis of high frequency, bandlimited data. If the directions of viewing angles are limited as well, it is shown that the target surface can be identified where the target normal lies within the range of viewing directions outside of this range, no information is available. It is shown that this phenomenon is totally a feature of the Fourier transform of characteristic one- zero functions and independent of the inverse scattering formalism. Numerical examples are given for the case of a perfectly reflecting circular cylinder.

Subject Categories:

  • Electricity and Magnetism
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE