For the frequency jittering radar,the problems of range migration and phase jittering among different pulses may occur during the long-time integration,which will affect the target energy integration.Therefore,a new coherent integration algorithm,namely,Frequency jittering based Radon-Fourier transform（FJ-RFT）,is proposed.Based on jointly searching in the motion parameter space,the problems mentioned above can be simultaneously resolved and the coherent integration can be then realized.The Cramer-Rao lower bound（CRLB） and the Blind speed sidelobes（BSSL） of the proposed FJ-RFT are analyzed in detail.Finally,numerical experiments are provided to demonstrate the effectiveness of the proposed method.
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