ISAR imaging technology has been applied in various fields such as object identification, radar detecting, object quality test and so on. Several ISAR imaging algorithms are realized and compared by running efficiency, imaging quality in the paper. FFT algorithm is fast but its quality is limited by angle rotation range, Direct Integration algorithm is unlimited but its efficiency is very poor. Compared to the both, CBP algorithm (Convolution Back Projection) is fast and unlimited by applied sceneries. CBP algorithm can form high-resolution ISAR image and has a low cost of running time.
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