Microlocal analysis of SAR imaging of a dynamic reflectivity function (Q2870589)

Synthetic aperture radar (SAR) technology provides essential optical information with minimum constrains, motivating researchers to study different questions and problems related to this technology. In this paper the authors are interested ``in four particular cases of SAR imaging with moving objects'', treating this problem from the microlocal point of view.NEWLINENEWLINEThe connection with this theory arises as the image can be described by a mathematical expression involving an operator \(F\) (forward operator) that is a Fourier integral operator and the normal operator \(F^*F\) and there are used microlocal methods to study the properties of the operator \(F\), in view of microlocally reduce the visual artifacts.NEWLINENEWLINEIndeed, ``by applying the backprojection operator \(F^*\) to data, artifacts appear in the reconstructed image'', but the authors show how to reduce the strength of the artifacts by applying a pseudodifferential operator \(Q\) to \(F\) before applying \(F^*\).NEWLINENEWLINEThis is an interesting perspective that shows the applicability of a so far abstract and rich theory as microlocal theory to down to earth problems.