Inversion scheme for ground penetrating radar that takes into account the planar air-soil interface

Hansen, Thorkild B.; Johansen, Per Michael

doi:10.1109/36.823944

Cited by 163 publications

(100 citation statements)

References 11 publications

Supporting

Mentioning

100

Contrasting

Order By: Relevance

“…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.…”

Section: Introductionmentioning

confidence: 99%

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

Zhang¹

2014

PIER

View full text Add to dashboard Cite

Abstract-The imaging of targets embedded in a planar layered background media has been an important topic in subsurface and urban sensing. In this paper a fast and efficient tomographic algorithm for the imaging of targets embedded in a multilayered media is presented. The imaging algorithm is based on the first-order Born approximation and exploits the spectral multilayered media Green's function. The exploding reflection model is employed and then the Green's function is expanded in the spectral form to facilitate the easy implementation of the imaging algorithm with fast Fourier transform (FFT). The wave propagation effect due to the presence of the layered subsurface media is automatically taken into account in the imaging formulation through the multilayer media Green's function. The linearization of the inversion scheme and employment of FFT make the imaging algorithm suitable in several applications concerning the diagnostics of large probed domain and allow real-time processing. Representative examples are presented to show the effectiveness and efficiency of the proposed algorithm for radar imaging through multilayered media.

show abstract

Section: Introductionmentioning

confidence: 99%

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

Zhang¹

2014

PIER

View full text Add to dashboard Cite

show abstract

“…The imaging algorithms that can be implemented for these applications are extremely various, since efficient ad-hoc procedures are usually searched for in connection with the peculiarities of the scenarios to be investigated [27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

GPR Estimation of the Geometrical Features of Buried Metallic Targets in Testing Conditions

Soldovieri¹,

Catapano²,

Barone³

et al. 2013

PIER B

View full text Add to dashboard Cite

Abstract-The capability of Ground Penetrating Radar (GPR) systems of accurately reconstructing the geometrical features of buried objects when working in critical conditions is investigated. A customized microwave tomographic approach is used to tackle the imaging through the processing of comparative experimental and synthetic GPR data. The first ones have been gathered in laboratory controlled conditions, while the second ones have been obtained by exploiting an ad-hoc implementation of a CAD tool. Attention is paid to the significant case of 'strong' scatterers having size comparable to the wavelengths of the probing signal, and possibly located close to the interface where the GPR antennas move. The results from imaging point out the potential of the proposed approach, showing in particular to which extent in challenging operational settings, it is possible to recover also the information about the shape of metallic targets in addition to their correct location and size.

show abstract

“…This latter point is relevant because, in many realistic circumstances, one cannot know or measure the way antennas radiate very accurately because of the close proximity of the soil. Although in some papers [Hansen and Johansen, 2000;Meincke, 2001;Dourthe et al, 2000] both the air-soil interface and the radiation pattern of the adopted antennas are taken into account in the inversion algorithm, an analysis of their role regarding reconstructed images is still not known.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper we limit our attention to the linear DBA which can make for successful detection. Moreover, inversion algorithms based on DBA usually provide acceptable results in terms of the location and shaping of buried objects, even in cases beyond its range of validity [Hansen and Johansen, 2000].…”

Section: Introductionmentioning

confidence: 99%

Effect of source and receiver radiation characteristics in subsurface prospecting within the distorted Born approximation

2005

View full text Add to dashboard Cite

[1] Linear models are widely adopted in subsurface prospecting because of the advantages in terms of effectiveness and numerical efficiency. They make it possible to simplify the problem of inverse scattering and at the same time to obtain acceptable results in locating buried objects. In this paper, we deal with subsurface prospecting where a model linearization is performed via distorted Born approximation and considering a half-space geometry in a two-dimensional scalar problem within a multistatic/multiview configuration. In this realm, most inversion algorithms fail to take into account the radiation properties of both transmitting and receiving antennas. Our goal is thus twofold. First, we aim to provide an insight into the role played by the radiation properties of antennas on the quality of the reconstructed tomographic image of the investigated domain. This task is performed by first tackling the single-frequency case in order to gain insight into the effect of the radiation pattern using simple arguments and then examining the multifrequency case. Numerical results confirm the theoretical expectation that the quality of the reconstruction gets worse for antennas with directive radiation patterns. Second, we numerically investigate the effects of inaccurate knowledge of the antenna pattern.Citation: Soldovieri, F., R. Persico, and G. Leone (2005), Effect of source and receiver radiation characteristics in subsurface prospecting within the distorted Born approximation, Radio Sci., 40, RS3006,

show abstract

Inversion scheme for ground penetrating radar that takes into account the planar air-soil interface

Cited by 163 publications

References 11 publications

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

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

GPR Estimation of the Geometrical Features of Buried Metallic Targets in Testing Conditions

Effect of source and receiver radiation characteristics in subsurface prospecting within the distorted Born approximation

Contact Info

Product

Resources

About