An efficient compensation approach for nonuniform sampling of rotating angle in ISAR imaging

In this paper under the assumption that radar also transmits narrow-band tracking signal accompanying transmission of wide-band signal and PRF (pulse repeating frequency) value is much higher than that of signal required by non-overlap imaging, the target moving trace may be estimated by using narrow-band signal. Furthermore, PRF is modified by referring the estimated moving trace. With these efforts, nonuniform sampling of rotating angle is well-compensated for imaging. Actually, most imaging radars can provide such narrow-band tracking signal and also operate with PRF high enough.