14 Articles found

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  • Irreversible destruction of collected data with overgaining

    Irreversible destruction of collected data with overgaining

    Introduction Recently we have encountered a growing amount of GPR users asking for help with the interpretation of their data. Most of this requests were based on a presumption that a more skilled user will be able to interpret more out of the ...

    Goran Bekic

  • Bridges survey in the south-west of UK

    Bridges survey in the south-west of UK

    During my recent visit to one of our partners in the UK, I was invited to attend a survey in Weymouth, Dorset. The client requesting the survey was a rather large construction company, which by the appearance of the town, were everywhere. My ...

    Reinaldo Alvarez Cabrera

  • Topography correction and the importance of applying it to the GPR records

    Topography correction and the importance of applying it to the GPR records

    Introduction The subject of this article is to introduce you to the importance of applying topography correction to GPR (ground penetrating radar) records and to inform you about the possible ways of doing it. Although the basis is taken from the ...

    Goran Bekic

  • Railroad survey application

    Railroad survey application

    Introduction The GPR technology has been introduced to the railroad engineers as one of the easy tools for quick and non-invasive railroad inspection. Since these surveys tend to stretch for a number of kilometers the amount of data can be ...

    Goran Bekic

  • Introduction to Ground Penetrating Radar (GPR)

    Introduction to Ground Penetrating Radar (GPR)

    About GPR Ground Penetrating Radar (GPR) is a non-invasive method of material analysis based on transmitting an ultra wide band EM signal into the materials. A part of the EM wave is reflected when it reaches a boundary between two materials with ...

  • Geology survey/Stratigraphy application

    Geology survey/Stratigraphy application

    Introduction These kind of surveys are done to determine ground conditions - more precisely layers, disturbance, homogeneity, water table levels etc. The two things that need to be achieved in this kind of surveys are depth of interest and ...

    Goran Bekic

  • Deep utility survey application

    Deep utility survey application

    Introduction Deep utility surveys are in most cases a nightmare to any GPR operator. The fact is that most of the utilities are in urban areas where there is a high amount of EM noise sources. Usually it is a complex net of entangled utilities, ...

    Goran Bekic

  • Dangerous waste survey

    Dangerous waste survey

    Introduction In the last few decades the ecological awareness has risen to a whole new level. Today investments and actions are made to improve the waste management which were previously unthinkable. One of the major steps in the waste management ...

    Goran Bekic

  • Comparison survey with the Geoscanners AB antennas- GCB200, GCB300, GCB400, GCB500, FLB390

    Comparison survey with the Geoscanners AB antennas- GCB200, GCB300, GCB400, GCB500, FLB390

    Introduction In this paper we will try to make it easier for all to grasp the difference between the antennas manufactured by Geoscanners AB, Sweden. Instead of duplicating the dry data sheets technical information this paper works as a visual ...

    Goran Bekic

  • Optimal GPR antenna selection

    Optimal GPR antenna selection

    It is common knowledge to anyone practicing Ground Penetrating Radar (GPR) technology that lower center frequency antennas mean higher penetration and lower resolution. In the same way it is correct to say that higher center frequency antennas mean ...

    Reinaldo Alvarez Cabrera

  • Mid frequency antennas comparison in GaiaSpectrum standard

    Mid frequency antennas comparison in GaiaSpectrum standard

    This is a short comparison survey of two commercially available antennas, the HBD-350 manufactured by Radarteam Sweden AB Boden, Sweden, and the RAMAC- 500MHz manufactured by MALÅ GeoScience AB Malå, Sweden. We got access to data ...

  • GPR antenna resolution

    GPR antenna resolution

    How many antennas should I have? We have all heard that question, especially coming from the newcomers to the Ground Penetrating Radar (GPR) technology. The people starting to master this technology are amazed that one has to have so many different ...

    Reinaldo Alvarez Cabrera

  • Estimating soil conductivity for GPR surveys

    Estimating soil conductivity for GPR surveys

    The results of a ground penetrating radar survey depends on many factors. In order to get useful data and good penetration, one of the conditions is that the conductivity of the ground is not too high. The conductivity of the material together with ...

    Reinaldo Alvarez Cabrera

  • GPR antenna bandwidth

    GPR antenna bandwidth

    I was really surprised and somehow confused the first time I heard about a half wave dipole with bandwidths in excess of 100%. Two things didn’t quite fit my previous knowledge about antennas; first, for any bandwidth exceeding 60% I was used ...