A Modified Ransac Method for Three-Dimensional Scattering Center Extraction at a Single Elevation

Abstract

In this paper, we focus on the 3D SC model reconstruction from data with wide azimuthal aperture at a single elevation. Since the existing method is difficult to implement for high-frequency signal or large-size target, we propose a modified RANSAC method for the extraction. In our approach, the 3D positions of the SCs are estimated from the 1D SCs via a modified RANSAC method. Then the scattering coefficients are refined via a linear least squares algorithm. The approach is robust with noise because the RANSAC method is able to tolerate a tremendous fraction of outliers. Moreover, it does not suffer from limited accuracy caused by the discretization of the parameter space in [13]. Experiments demonstrate the effectiveness of the proposed approach.

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“…This computer algorithm has an unprecedented ability to calculate and deal with images. In the face of image calculation, the image can be analyzed in the form of a matrix, which is accurate and efficient (Zhai Qet al2016) [6] . The computational research of RANSAC algorithm has been applied in practical engineering, which adds a new research path to the computation of image processing in the world (Sheng Het al2016) [7] .…”