The full scale geomodel at Kiel university for hydrogeophysical techniques

Ivashov, Sergey; Makarenkov, V. I.; Masterkov, A. V.; Razevig, Vladimir; Sablin, V.N.; Sheyko, Anton P.; Tchapourski, V. V.; Vasilyev, I. A.

doi:10.3997/2214-4609.201406261

Cited by 5 publications

(2 citation statements)

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“…• Landmine detection [10,11] • Searching for hidden bugging devices [5] • Diagnostics of building details and constructions [12,13] • Diagnostics of composite materials [14,15].…”

Section: Introductionmentioning

confidence: 99%

Advantages and restrictions of holographic subsurface radars

Razevig

Ivashov

Vasiliev

et al. 2010

Proceedings of the XIII Internarional Conference on Ground Penetrating Radar

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Holographic subsurface radars (HSR) are not in common usage now; possibly because of the historical view amongst radar practitioners that high attenuation of electromagnetic waves in most media of interest will not allow sufficient depth of penetration. It is true that the fundamental physics of HSR prevent the possibility to change receiver amplification with time (i.e. depth) to adapt to lossy media (as is possible with impulse subsurface radar or ISR). However, use of HSR for surveying of shallow subsurface objects, defects, orinhomogeneities is an increasingly proven area of application. In this case HSR can record images with higher resolution than is possible for ISR images. This paper presents experiments with HSR imaging in media with different degrees of attenuation, and illustrates the principle of HSR through an optical analogy.

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“…• Landmine detection [10,11] • Searching for hidden bugging devices [5] • Diagnostics of building details and constructions [12,13] • Diagnostics of composite materials [14,15].…”

Section: Introductionmentioning

confidence: 99%

Advantages and restrictions of holographic subsurface radars

Razevig

Ivashov

Vasiliev

et al. 2010

Proceedings of the XIII Internarional Conference on Ground Penetrating Radar

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“…A family of holographic radars, named Rascan, has been produced following more than ten years of research and development. 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 . ).…”

Section: Introductionmentioning

confidence: 99%

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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