Abstract
This paper focuses on multi-band fusion imaging.A method based on high-precision parameter estimation of Geometrical Theory of Diffraction(GTD) model is given.It makes use of the phase difference of pole and scattering coefficient between the all-pole model of each sub-band to estimate the incoherent components.The gapped-data amplitude and phase estimation algorithm is adopted to fill up the gapped band.Finally,fusion data is gained by high precision parameter estimation of geometrical theory of diffraction-all-pole model with full-band data.The simulation indicates that the resolution of 1D range profile and 2D ISAR image based on this method is better than that of sub-band.In this way,the effectiveness of the method is verified.
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