Abstract :
High Speed Maneuvering Dim Target (HSMDT) detection is the challenging problem in pulsed monostatic airborne radar, especially under jamming and clutter conditions, the problem is not only how to remove clutter and jamming but also when we detect the HSMDT using the airborne radar the range migration and Doppler estimation problems appeared and needed to be compensated. In this paper a new hybrid technique using Optimum Space Time Adaptive Processing (OSTAP), Second Order Keystone Transform (SOKT), and the Improved Fractional Radon Transform (IFrRT) is proposed, where the STAP is used as anti-jamming and clutter rejection method, the SOKT corrects the range curvature and part of the range walk, and the IFrRT is applied to estimate the target´ radial acceleration and correct the residual range walk. The simulation demonstrates the validity of the proposed algorithm by calculating the probability of detection for the proposed algorithm and comparing it with the traditional methods, it shows that the new approach increased effectively the probability of detection, and also overcome the limitation of Doppler frequency ambiguity.
