The minimum entropy criterion of range alignment in ISAR motion compensation

The envelope correlation algorithm is widely used in range alignment of ISAR motion compensation, however, this method often make the error accumulation, and what is more, a jump error will make when the reflection of target has strong scintillation. To reduce the error of range alignment a minimum entropy criterion of range alignment in ISAR compensation is proposed. Using this method the range bin can be alignment correctly which is verified by real radar data.