Application of the RASCAN holographic radar to cultural heritage inspections

Capineri, Lorenzo; Falorni, Pierluigi; Borgioli, G.; Bulletti, Andrea; Valentini, Stefano; Ivashov, Sergey; Zhuravlev, Andrey; Razevig, Vladimir; Vasiliev, I.; Paradiso, M.; Inagaki, Michio; Windsor, C. G.; Bechtel, Timothy

doi:10.1002/arp.360

Cited by 17 publications

(23 citation statements)

References 8 publications

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“…The results of a work in progress for the combination of these images in a single colour coded image have been presented at PIERS 2009, Moscow (Windsor et al . ).…”

Section: Holographic Radar Imaging With Rascan Instrumentmentioning

confidence: 97%

“…Rascan radars are a completely unique and innovative type of subsurface radar that operates with continuous wave, discrete frequencies around 2 GHz, 4 GHz or 7 GHz depending upon the model (Vasiliev ; Ivashov , ; Razevig ; Capineri et al . ). Images are recorded by sweeping the cylindrical horn antenna across an investigated surface, with the transmitter producing five discrete frequencies, which are recorded at two receivers with parallel and cross‐polarization relative to the transmitter.…”

Section: Introductionmentioning

confidence: 97%

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Combined holographic subsurface radar and infrared thermography for diagnosis of the conditions of historical structures and artworks

Capineri

Falorni

Ivashov

et al. 2010

Near Surface Geophysics

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This paper describes a new application of holographic radar for non‐destructive testing applied to cultural heritage items. A holographic radar, called RASCAN, operates in continuous wave multi‐frequency mode at 4 GHz range and produces images with high in‐plane resolution (about 2 cm). Marble items and other stones have been investigated to validate the method to search for subtle cracks, moisture or to unveil details of structures at shallow depth (up to 2 wavelengths). Other important materials are aged wood items that are investigated for tunnels made by insects. Then the holographic radar imaging has been experimentally compared with infrared thermography to understand the advantages and disadvantages of these methods and to derive indications for solving the problem common in all geophysics of inherent non‐uniqueness.

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“…The results of a work in progress for the combination of these images in a single colour coded image have been presented at PIERS 2009, Moscow (Windsor et al . ).…”

Section: Holographic Radar Imaging With Rascan Instrumentmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 97%

Combined holographic subsurface radar and infrared thermography for diagnosis of the conditions of historical structures and artworks

Capineri

Falorni

Ivashov

et al. 2010

Near Surface Geophysics

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“…Another application to a real historical structure was the scanning of a decorative marble medallion in the floor of the Temple of San Biagio in Montepulciano, Italy, Fig. 34 [36]. RASCAN-4/4000 images of the marble medallion reveal a complex internal structure, Fig.…”

Section: Cultural Heritage Inspection and Diagnosticsmentioning

confidence: 99%

Design and Applications of Multi-Frequency Holographic Subsurface Radar: Review and Case Histories

Ivashov¹,

Capineri²,

Bechtel³

et al. 2021

Preprint

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Holographic subsurface radar (HSR) is currently not in widespread usage. This is due to an historical perspective in the ground penetrating radar (GPR) community that the high attenuation of electromagnetic waves in most media of interest, and the inability to apply time-varying gain to the continuous wave (CW) HSR signal precludes sufficient effective penetration depth. While it is true that the fundamental physics of HSR, with its use of a CW signal, does not allow amplification of later (i.e. deeper) arrivals in lossy media (as is possible with impulse subsurface radar — ISR), HSR has distinct some distinctive advantages. The most important of these is the ability to do shallow subsurface imaging with a resolution that is not possible with ISR. In addition, the design of an HSR system is simpler than for ISR due to the relatively low-tech transmitting and receiving antennae. This paper provides a review of the main principles of HSR through an optical analogy and describes possible algorithms for radar hologram reconstruction. We also present a review of the history of development of systems and applications for HSR of the “RASCAN” type which is possibly the only holographic subsurface radar that is produced in lots. Among the subsurface imaging and remote sensing applications considered are humanitarian demining, construction inspection, surveys of historic architecture and artworks, nondestructive testing of dielectric aerospace materials, security applications, paleontology, detection of wood-boring insect damage, and others. Each application is illustrated with relevant data acquired in laboratory and/or field experiments.

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“…It has been applied to security surveillance and used to address utility detection problems [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

The impact of an uneven medium surface in holographic penetrating imaging and a method to eliminate the interference

Huang

Liu

2013

2013 IEEE International Conference of IEEE Region 10 (TENCON 2013)

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This paper focuses on a common but rarely studied interference phenomenon caused by an uneven medium surface in holographic penetrating imaging. This interference has serious effect on the imaging process of concealed targets, especially for the narrow band holographic subsurface radar. Simulations based on the model of uneven medium surface are implemented to illustrate the negative effect. An uneven surface compensation method is proposed to eliminate the reflect waves of uneven surface. Simulation results show the effectiveness of the compensation method.

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Application of the RASCAN holographic radar to cultural heritage inspections

Cited by 17 publications

References 8 publications

Combined holographic subsurface radar and infrared thermography for diagnosis of the conditions of historical structures and artworks

Combined holographic subsurface radar and infrared thermography for diagnosis of the conditions of historical structures and artworks

Design and Applications of Multi-Frequency Holographic Subsurface Radar: Review and Case Histories

The impact of an uneven medium surface in holographic penetrating imaging and a method to eliminate the interference

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