Bistatic Tomographic GPR Imaging for Incipient Pipeline Leakage Evaluation

Abstract

Abstract-In this work, we present an inverse scattering approach to address the timely detection of damage and leakage from pipelines via multi-bistatic ground penetrating radar (GPR) surveys. The approach belongs to the class of linearized distorted wave models and explicitly accounts for the available knowledge on the investigated scenario in terms of pipe position and size. The inversion is regularized by studying the properties of the relevant linear operator in such a way to guarantee an early warning capability. The approach has been tested by means of synthetic data generated via a finite-difference timedomain forward solver capable of accurately and realistically modeling GPR experiments. The achieved results show that it is possible to detect the presence of leakage even in its first stages of development.

Two-Dimensional Microwave Tomographic Algorithm for Radar Imaging Through Multilayered Media

“…Moreover, a nonlinear equation has to be solved in order to find the wave propagation path using ray tracing technique which is time consuming and difficult to be extended to complex subsurface environment involving layered soils. As an efficient compromise between the imaging accuracy and efficiency, tomographic imaging algorithms based on the first order Born or Rytov approximation are proposed in [18][19][20]. Tomographic imaging algorithms provide efficient quantitative reconstruction of cross-sections of inhomogeneous objects, such as their location, shape and electrical properties, etc.…”

“…Tomographic imaging algorithms provide efficient quantitative reconstruction of cross-sections of inhomogeneous objects, such as their location, shape and electrical properties, etc. [18][19][20][21][22][23][24][25].…”

Bistatic FMCW Sar Raw Signal Simulator for Extended Scenes

“…Moreover, it is an extension of the traditional monostatic FMCW SAR with increased capabilities, reliability and flexibility [13][14][15][16][17][18][19][20][21][22][23][24], while keeping the advantages of small size, low cost and agile reaction. Bistatic FMCW SAR have a great potential for remote sensing applications in airborne and spaceborne remote sensing fields, such as frequent monitoring, high resolution imaging, wide-swath detecting, scene classification, and single pass cross-track interferometry, especially where frequent revisits at low cost are needed or where small size is required [13][14][15][16][17][18][19][20][21][22][23][24]. Thus the subject of design, processing, and data interpretation for the bistatic FMCW SAR mode is gaining an increasingly wide interest in the remote sensing scientific community.…”

Multi-Feature Based Detection of Landmines Using Ground Penetrating Radar

“…Among various types of radars developed so far, ground penetrating radars (GPRs) have attracted many researchers attention. GPRs have been used for various applications such as [26,27] and [28], to name a few.…”