Quantitative Inversion Radar Imaging: A Physical Remote Sensing Modality of High Resolution.

Quantitative inversion techniques have been widely used in many fields where the electric or magnetic fields are sampled in a wide range of viewing angles. In this paper, the quantitative inversion imaging scheme has been proposed for remote sensing radar systems with multiview-multistatic sensing configuration. The cross correlated contrast source inversion method is used in witch the cross-correlated term has been used as a regularization technique for, to some extent, overcoming the ill-posedness. Preliminary simulation results demonstrate that quantitative inversion radar imaging shows physical resolving ability for remote sensing imaging. To the best of our knowledge, it is verified for the first time that physical imaging is feasible with limited range of viewing angles (less than 65° in this paper). Therefore, we remark that in remote sensing applications, the quantitative inversion radar imaging scheme shows potential of identifying radar targets not only with finer geometric resolutions but also in an additional physical dimension of the electromagnetic characteristics. Extension of this inversion scheme to the multibistatic sensing configuration will be more impressive in the field of remote sensing radar imaging.