  To solve the range cell migration (RCM) and spectrum spread during the
integration time induced by the motion of a target, this paper proposes a new
coherent integration method based on Radon non-uniform FRFT (NUFRFT) for random
pulse repetition interval (RPRI) radar. In this method, RCM is eliminated via
searching in the motion parameters space and the spectrum spread is resolved by
using NUFRFT. Comparisons with other popular methods, moving target detection
(MTD), Radon-Fourier transform (RFT), and Radon-Fractional Fourier Transform
(RFRFT) are performed. The simulation results demonstrate that the proposed
method can detect the moving target even in low SNR scenario and is superior to
the other two methods.
