ID-ISAR Imaging of Manoeuvering Aircraft,
ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRAN CE)
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Most operating radar systems dont 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.
- Active and Passive Radar Detection and Equipment