A physics based numerical model has been developed to describe the gross distortion on ISAR images due to small perturbed target motion. Quantitative results obtained under controlled experimental conditions on the target's motion have confirmed that large distortion in the ISAR image of the target can occur. The experimental data give excellent agreement with the model results. The distortion is a consequence of the phase modulation effect in the radar ...
The Inverse Synthetic Aperture Radar (ISAR) image of a target can be distorted as a result of a small perturbing motion possessed by the target. This has been observed regularly in radar imaging of moving targets such as in-flight aircraft, ships sailing on high seas and maneuvering ground vehicles. A Target Motion Simulator apparatus that simulates a target with small perturbing motion has been designed and built to study the ...
a two-transducer, two-arm, computer-automated ultrasonic test bed (utb) has been developed. the utb, with a total of 14 independent axes of motion, is controlled by six lsi-11/23 computers and one vax-11/780 computer. the two transducers are moved under guidance of either a menu-based control system or a user-specified trajectory. this capability allows complex scanning geometries without having to rebuild the test bed or refixture the part. the authors believe that ...
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