Abstract
Local surface slope variations can impact synthetic aperture radar (SAR) imagery by changing the perceived polarization state of the imaged region. Correction of the topography-induced effects results in more accurate evaluation of polarimetric parameters. In this letter, the polarization-orientation angle (POA) correction is analytically estimated for a general polarimetric-SAR scenario operating at a known squint angle based upon a digital elevation model, permitting correction of the topography-induced effects. It can also aid to identify a squint angle that can counteract the effect of a specific POA rotation. Model parameters are demonstrated through a software implementation.
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