Restoration of holographic image degraded by atmospheric turbulence through spatial filtering

Abstract

This paper presents a spatial filtering method for reducing ill-effects of atmospheric turbulence on holographic imaging using airborne radars. The method is based on the spatially weighting of amplitudes of received waves and is examined by showing graphically the average strip-image which is holographically reconstructed by using exponential weight functions. The introduction of the weight functions yields fairly good restoration of images degraded by atmospheric turbulence and may be useful for image reconstruction in the case of extremely strong turbulence.