Compensation of scatterer migration through resolution cell in inverse synthetic aperture radar imaging

To obtain the inverse synthetic aperture radar image of a target, certain r otation angles of the target with respect to radar line of sight during the coherent integration interval are required, migration of scatterers will t ake place. Actually, scatterer migration through resolution cells (MTRC) wi ll happen inevitably in high-resolution radar imaging, which will result in image resolution degradation. Scatterer MTRC is discussed, then a simple a nd an efficient algorithm, the MTRC compensation algorithm (MTRCCA), is pro posed to compensate MTRC. The relationship between the MTRCCA, range-dopple r and polar formatting algorithms is also discussed. ISAR images from simul ated and real data measured in a microwave anechoic chamber are presented t o validate the proposed algorithm.