Intermittent sampling repeater jamming is a new jamming technology of sending and receiving, in which the Doppler tolerance of the broadband signal is the main character utilized to achieve multiple false targets, therefore the priori knowledge of the jamming is in urgent need for radar anti-jamming．Aiming for this problem, firstly, the cross ambiguity function of the interference after matching filter is derived based on the principle of the intermittent sampling repeater jamming. Secondly, on the basis of the quantitative relationship of function, the sampling period and disturbance duty cycle are estimated by means of the Radon transform and least square estimation techniques．Finally, simulation results demonstrate the influence of the Jamming to Noise Ratio(JNR) and sampling data length on the parameter estimation performance, and also show the effectiveness of the proposed algorithm．