Deformation Inversion Method for Building Structures Based on Cylindrical Aperture Radar Three-Dimensional Imaging

In building structure monitoring scenarios, conventional differential interferometric synthetic aperture radar (DInSAR) is unable to obtain deformation of overlapping targets within observation scenes. This paper proposes a deformation inversion method based on cylindrical aperture radar three-dimensional (3D) imaging. Cylindrical aperture radar, while maintaining traditional resolution capabilities, synthesizes aperture in the elevation direction, enabling acquisition of high-precision 3D images of observation scenes. By performing differential interferometry on 3D radar images before and after target deformation, deformation of each target can be obtained. The effectiveness of the proposed method is demonstrated through a set of simulation experiments.