The electric inversion technique reconstructs the subsurface medium distribution from acquired data. On the basis of electric inversion, objects buried under the earth or seabed, such as pipelines and unexploded ordnance, are detected and located in a contactless manner. However, the process of accurately reconstructing the shape of the target object is challenging because electric inversion is a nonlinear and ill-posed problem. In this work, we present an inverse multiquadric (IMQ) regularization method based on the level set function for reconstructing buried pipelines. In the case of locating underwater objects, the unknown inversion area is split into two parts, the background and the pipeline with known conductivity. The geometry of the pipeline is represented based on the level set function for achieving a noiseless inversion image. To obtain a binary image, the IMQ is used as the regularization term, which 'pushes' the level set function away from 0. We also provide an appropriate method to select the bandwidth and regularization pa-rameters for the IMQ regularization term, resulting in reconstructed images with sharp edges. The simulation results and analysis show that the proposed method performs better than classical inversion methods.

SHANG Wenjing;XUE Wei;XU Yidong;MAKAROV Sergey B.;LI Yingsong

College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China;Key Laboratory of Advanced Marine Communication and Information Technology,Ministry of Industry and Information Technology,Harbin 150001,China;Yantai Research Institute and Graduate School of Harbin Engineering University,Yantai 264006,China;Institute of Physics,Nanotechnology and Telecommunications,Higher School of Applied Physics and Space Technologies,Peter the Great St.Petersburg Polytechnic University,St.Petersburg 195251,Russia

中国海洋大学学报（自然科学英文版）

[1]SHANG Wenjing;XUE Wei;XU Yidong;MAKAROV Sergey B.;LI Yingsong-.Undersea Buried Pipeline Reconstruction Based on the Level Set and Inverse Multiquadric Regularization Method)[J].中国海洋大学学报（自然科学英文版）,2022(01):101-112

Undersea,Multiquadric,ordnance,multiquadric

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