A Method for Increasing Effective Resolution of Tilting Mode Satellite Image

To increase effective resolution of a tilting mode satellite image,we present a novel variational partial differential equation restoration method,which employs the gradient fidelity term to compensate high frequency information.By the method firstly,the mechanism of aliasing phenomenon in the tilting mode sampling condition is analyzed.Then,we use the optimal reciprocal cell theory to gain the sampling image spectrum which contains a minimal amount of aliasing and noise.Finally,we apply the proposed method to deblur the image spectrum.Experimental results indicate that our method can effectively remove aliasing,blur and noise in tilting mode satellite images and the images restored can achieve higher signal noise ratio.