Accession Number : ADA189011

Title :   The Complex Point Spread Function of the RSRE SAR (Synthetic Aperture Radar),

Corporate Author : ROYAL SIGNALS AND RADAR ESTABLISHMENT MALVERN (ENGLAND)

Personal Author(s) : Luttrell, S P

PDF Url : ADA189011

Report Date : Sep 1987

Pagination or Media Count : 23

Abstract : Super-resolution of SAR data requires that the complex point spread function (PSF) of the SAR be accurately known. We propose and implement a method of measuring the PSF which uses existing SAR images of targets as raw data. We find that in addition to the expected distortions of the azimuth response which arise from swing of the antenna and from artifacts of motion compensation processing, there are extensive and unexpected distortions of the principle of superposition (ie it is non-linear), and so SAR PSF calibration must be conducted with care. We estimate the complex SAR PSF when a bright target is present.

Descriptors :   *ANTENNAS, *COMPENSATION, *IMAGES, *PROCESSING, *SYNTHETIC APERTURE RADAR, *TARGETS, AZIMUTH, BRIGHTNESS, CALIBRATION, MOTION, RESPONSE, GREAT BRITAIN

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE