On the spatial resolution of the IR remote sensing systems

Remote sensing system spatial resolution is considered, and it is shown that for a specific spatial frequency or spatial frequency range of interest, there is an optimum IFOV selection for the corresponding IR system. A line scanner convolution process analysis indicates that the spatial resolution can greatly exceed the IFOV limit as long as the contrast is large enough, particularly for linear or spot targets. Spatial resolution is shown to be further improved by using the convolution operation solving method in the image processing, as used in the optic Fourier transformation.