Accession Number : ADP005850
Title : ID-ISAR Imaging of Manoeuvering Aircraft,
Corporate Author : ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRAN CE)
Personal Author(s) : Ender, J.
Report Date : MAY 1989
Pagination or Media Count : 9
Abstract : Most operating radar systems don't provide sufficient range resolution to resolve flying targets in range direction. Nevertheless, high cross range resolution can be obtained by 1-D ISAR imaging. This procedure will be successful only, if the target motion is compensated with a high accuracy. In this paper, a motion compensation technique is introduced based on Kalman forward-backward-smoothing on radar position estimates together with spectral information. An iterative error correction procedure (autofocus) yields a cross range image with sufficient resolution. Correct scaling and estimation of the imaging axis direction are derived from the flight path by a simple orientation model.
Descriptors : *SYNTHETIC APERTURE RADAR, WEST GERMANY.
Subject Categories : Active & Passive Radar Detection & Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE