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The Information Content of Synthetic Aperture Radar Images of Terrain

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2 Author(s)
V. S. Frost ; University of Kansas ; K. S. Shanmugan

A statistical model is developed that portrays an imaging radar as a noisy communication channel with multiplicative noise, and the model is used to evaluate the average amount of information that can be extracted about a target from its radar image. The average information content is also used to define a measure of radiometric resolution for radar images. It is shown that the information content and the resolution capabilities of an imaging radar reach a limit beyond which an increase in scene dynamic range does not improve the information content or the resolution. This limitation results from the multiplicative nature of the noise introduced in the imaging process.

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IEEE Transactions on Aerospace and Electronic Systems  (Volume:AES-19 ,  Issue: 5 )