Coherent integration is used to improve the signaltonoise ratio when radar detects the target, the radial motion of moving targets will lead to range migration, which will degrade the performance of coherent integration. The simulation shows that range migration is obvious when detecting the fastmoving target with wideband radar, so it is important to correct range migration. A new algorithm called frequency domain correction was proposed, the digital pulse compression and the compensation of the moving terms are completed in the frequency domain. The simulation shows that the Keystone transform and frequency domain correction algorithm can compensate scatter migration through resolution cells without knowing the velocity of targets. Therefore, detection performance of wideband radar is improved because of the achievement of coherent integration in multicycle echoes. The algorithms' operation amount were analyzed and the result showed that the new algorithm’s operation amount is far less than the Keystone transform, and the method is easy for engineering implementation.