PROJECT TITLE :

Cross-range scaling method of inverse synthetic aperture radar image based on discrete polynomial-phase transform

ABSTRACT:

The cross-range scaling of inverse artificial aperture radar image depends on both the radar wavelength and also the rotating angle of the target relative to the radar line-of-sight. Once compensating the translational motion, the second-order part coefficients of the range echoes are a linear polynomial of the rotating angular velocity and range geometry. During this study, a completely unique technique for estimating the rotating angular velocity of the targets with dominant scatters is proposed. The vary cells where the amplitudes have smaller normalised variances are selected, and then frequency domain windowing is applied to extract echoes of dominant scatters. Primarily based on the discrete polynomial-phase remodel, the second-order section coefficients of the robust scatter echoes are estimated, and thus the rotating angular velocity can be obtained through the smallest amount-square-error technique. Simulated and real-information results have shown the effectiveness and robustness of this technique.