Accession Number:

ADA032662

Title:

Development of a Computer Model for Scattering of Electromagnetic Waves by a Turbulent Wake

Descriptive Note:

Final technical rept. 1 Jul 1975-30 Jun 1976

Corporate Author:

ROME AIR DEVELOPMENT CENTER HANSCOM AFB MA DEPUTY FOR ELECTRONIC TECHNOLOGY

Personal Author(s):

Report Date:

1976-10-01

Pagination or Media Count:

119.0

Abstract:

This report describes a theoretical model for the radar scattering by a turbulent, re-entry induced ionized wake. The equations used, their derivations, and the fortran listing of the computer code are given and explained in detail. The output from a sample run of the program is given and explained. Comparisons are made between the results of this model and published data from laboratory experiments on microwave scattering from turbulent plasma. The results of some parametric calculations are given also. This theoretical model assumes that the Electrical properties of the wake plasma are known in terms of certain statistical and spatial distributions. The technique used by the model is a distorted wave born approximation in which the propagation in the background medium is calculated rigorously for a layered cylinder of mean wake plasma. The model provides predictions of the backscattering amplitude and the first and second moments of the doppler spectrum, both at each input wake axial station and as a function of apparent axial station in the backscattered pulse. Direct and cross polarized scattering are included for both linear and circular polarization radars.

Subject Categories:

  • Computer Programming and Software
  • Active and Passive Radar Detection and Equipment
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE