Abstract:

The rotation angle condition in ship target inverse synthetic aperture radar (ISAR) imaging based on missile-borne radar is analyzed. The quality of the radar imaging relies on the relative rotation angle of the radar and the target, and the illsuited value of this angle will weaken the imaging quality. In the condition that radar and ship motion exist at the same time, the total rotation angle consists of the angle contributed by missile flight and the angle contributed by ship swing, and its value can be estimated by the echo. The angle scope for ISAR imaging is analyzed, and based on the model of the relative corner, the criterion whether the relative corner satisfies the ISAR imaging condition is put forward.