Accession Number : ADA138230

Title :   A Minimum Range Criterion for RCS (Radar Cross-Section) Measurements of a Target Dominated by Point Scatterers.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Welsh,B M

PDF Url : ADA138230

Report Date : Dec 1983

Pagination or Media Count : 130

Abstract : This thesis develops a minimum range criterion for radar cross-section measurements by neglecting the phase of the incident field at the target and considering only the amplitude distribution. In contrast to the traditional minimum range criterion, developed for a flat target characterized by specular reflection, the target examined in this thesis is characterized by a number of independent point scatterers located on the target surface. Instead of enforcing point by point accuracy, accuracy of the average target RCS is required, averaging over a number of measurements. The location of the point scatterers on the target are described probabilistically; the expected average measured RCS versus target range is calculated, and compared to results of a Monte-Carlo simulation. The traditional minimum range criterion is compared to the new minimum range criterion. The traditional minimum range criterion, based on phase uniformity across the target, requires minimum measurement ranges that are much larger than those ranges dictated by the new minimum range criterion for targets dominated by point scattering. (Author)

Descriptors :   *Radar cross sections, *Electromagnetic scattering, *Radar tracking, Monte Carlo method, Specular reflection, Field conditions, Flat plate models, Accuracy, Measurement, Distribution, Simulation, Amplitude, Targets, Scattering, Surfaces, Theses

Subject Categories : Active & Passive Radar Detection & Equipment
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE