Accession Number : ADP006386

Title :   Parametric Bicubic Spline and C.A.D. Tools for Complex Targets Shape Modelling in Physical Optics Radar Cross Section Prediction,

Corporate Author : AERITALIA S P A TURIN (ITALY)

Personal Author(s) : Delogu, A. ; Furini, F.

Report Date : SEP 1991

Pagination or Media Count : 13

Abstract : Increasing interest in RCS (Radar Cross Section) reduction is placing new demands on theoretical, computational and graphic techniques for calculating scattering properties of complex targets. In particular, computer codes capable of predicting tile RCS of an entire aircraft at high frequency and of achieving RCS control with modest structural changes, are becoming of paramount importance in stealth design. In this paper, a computer code, evaluating the RCS of arbitrarily shaped metallic objects CAD generated, and its validation with measurements carried out using ALENIA RCS test facilities, are presented, The code, based on the Physical Optics method is characterized by an efficient integration algorithm with error control, ill order to contain the computer time within acceptable limits, and by an accurate parametric representation of the target surface in terms of bicubic splines. RCS, High frequency techniques, Physical Optics, CAD models, RCS reduction.

Descriptors :   *AIRCRAFT, *RADAR CROSS SECTIONS, *TARGET DETECTION, ALGORITHMS, COMPUTERS, CONTROL, ERRORS, FACILITIES, FREQUENCY, GRAPHICS, HIGH FREQUENCY, INTEGRATION, MODELS, OPTICS, REDUCTION, SCATTERING, SPLINES, TARGETS, TEST FACILITIES, TIME, VALIDATION, MILITARY EQUIPMENT, COMPUTER AIDED DESIGN, BACKSCATTERING.

Subject Categories : Active & Passive Radar Detection & Equipment
      Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE