A NOVEL 3D IMAGING METHOD BASED ON ORTHOGONAL-TRACK SAR

A novel method of three-dimensional (3D) imaging based on orthogonal-track synthetic aperture radar (SAR), is proposed in this paper. In the scheme, the SAR sensor moves along two orthogonal tracks successively and two SAR images are obtained. Then we extract the spacial information from the two-dimensional (2D) SAR images to reconstruct the 3D distribution of scatterers in the common part. The orthogonal-track SAR obtains resolving ability in the normal direction of the azimuth-range plane by combining the information obtained along orthogonal tracks. Compared with conventional single-channel 2D SAR and interferometry SAR, the orthogonal-track SAR has distinct advantage in providing detailed and precise information about spatial distribution of the observed scene, and is capable of achieving real 3D resolution cell.