When the size of target is b ig or the rotation angle is big, migration through resolution cells (MTRC) may o ccur when employing range Doppler imaging algorithm in inverse synthetic apertu r e radar (ISAR), which can affect the imaging quality. Aiming at the problem of M TRC, the echo after dechirping is researched based on bistatic ISAR turntable mo del. And the cause of MTRC is analyzed. The match Fourier transform(MFT) is used to correct MTRC, which can eliminate the coupling of fast frequency, s low time and solve the image defocusing problem caused by MTRC. Simulation resul t shows that the correction algorithm based on MFT can correct the MTRC of maneu vering target and improve the image quality.