The reconstruction of images distorted by hypersonic turbulence

摘要

The performance of sensors aboard platforms that travel at hypersonic speeds within the atmosphere is degraded by image distortion partially due to turbulent mixing of coolant gases in front of the sensor window. To study this degradation, a sequence of experiments was performed that produced a number of distorted images using different mixtures of turbulent gases. This paper describes these experiments and presents image processing algorithms, based on shifted - average techniques that are used to reconstruct the original image. The quality of the reconstruction depends on the particular gas combination and on the number of images used by the reconstruction algorithm.