Range instantaneous Doppler algorithm in ISAR based on instant frequency estimation

摘要

Abstract: Range-Instantaneous-Doppler Algorithm (RIDA) should beused in ISAR imaging when the target is maneuvering.With the assumption that Doppler shift of scatterers islow-order polynomial, an adaptive LFM `CLEAN' techniqueto estimate the instantaneous frequency is proposed,where scatterer Migration Through Resolution Cell isalso considered. The final RID images of the realmaneuvering aircraft are obtained, which confirms theeffectiveness of the proposed technique.!5