Accession Number:

ADA128680

Title:

Radar Resonance Reflection from Sets of Plane Dielectric Layers.

Descriptive Note:

Final rept.,

Corporate Author:

COAST GUARD WASHINGTON DC OFFICE OF RESEARCH AND DEVELOPMENT

Personal Author(s):

Report Date:

1983-05-01

Pagination or Media Count:

35.0

Abstract:

The perdiction of the Resonance Scattering Theory RST for the reflection coefficient from a set of two contiguous plane dielectric layers separating two semi-infinite dissimilar non-conducting media, is constructed and compared to the exact classical model solution. The comparsion serves to a show the accuracy and simplicity of the RST prediction, and b to underline the usefulness of the RST to produce simple physical interpretations of generally complex phenomena. The analysis provides a systematic method for detecting the presence of a dielectric layer under another one covering it possibly the situation caused by an oil spill in ice-covered Artic regions, by certain modulation effects present in the response surface of the returned echoes. This method also identifies the material composition of the lower or hidden layer in the bilaminar configuration. The process disentangles which resonance feature present in the radar reflection coefficient is caused by which of the two interacting layers. RST, therfore, solves the inverse scattering problem for the composition and thickness not only of the top visible ice layer, but also of the substance oil hidden under that upper layer.

Subject Categories:

  • Snow, Ice and Permafrost
  • Active and Passive Radar Detection and Equipment
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE