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impaginato corretto fullone_Layout 1 13/10/15 12.09 Pagina 59 Department of Engineering, ICT and Technologies for Energy and Transport Patent Title Title GPR system. GPR system. Ref. CNR 10361 Ref. CNR 10361 , Assignee(s): CNR, Geoprove sas , CNR Institutes: IREA, IBAM Main Inventors: R. Persico, F. Soldovieri Countries: IT Priority date: 06/02/2015 Abstract Abstract The present invention refers to a GPR system with two receiving antennas combined with a positioning The present invention refers to a GPR system with two receiving antennas combined with a positioning system that allows the rigid movement of the antennas along a cylindrical surface. The system has been system that allows the rigid movement of the antennas along a cylindrical surface. The system has been devised to investigate the inner status of columns and pillars a way more comfortable and reliable than devised to investigate the inner status of columns and pillars a way more comfortable and reliable than the current state of art allows. In particular, the antennas can be moved along circumferences at fixed the current state of art allows. In particular, the antennas can be moved along circumferences at fixed height and along vertical segments. The system will be then equipped with a code for the elaboration of height and along vertical segments. The system will be then equipped with a code for the elaboration of the data. The reconstruction approaches are able to process jointly data gathered in reflection and the data. The reconstruction approaches are able to process jointly data gathered in reflection and transmission mode, and computational efficiency is achieved by means of a simplified model of the transmission mode, and computational efficiency is achieved by means of a simplified model of the electromagnetic scattering. electromagnetic scattering. Background Background GPR is a tool for the investigation of the inner status of opaque structures by means of microwaves. The GPR is a tool for the investigation of the inner status of opaque structures by means of microwaves. The scientific literature and the economic interests that GPR systems and GPR prospections move all over the scientific literature and the economic interests that GPR systems and GPR prospections move all over the world are huge, and there is an increasing interest for innovative systems. Some examples are the Alis world are huge, and there is an increasing interest for innovative systems. Some examples are the Alis system, that integrates together GPR and a metal detector technology, or the concept of reconfigurable system, that integrates together GPR and a metal detector technology, or the concept of reconfigurable GPR, that has the possibility to adapt to different applicative scenarios. GPR, that has the possibility to adapt to different applicative scenarios. Technology Technology The system is composed by one transmitting and two receiving antennas, whose movements are made The system is composed by one transmitting and two receiving antennas, whose movements are made possible by a positioning system. possible by a positioning system. The system is able to provide images of the internal status of the probed structure thanks to the adoption The system is able to provide images of the internal status of the probed structure thanks to the adoption of an algorithm for the processing of data gathered along a cylindrical surface. of an algorithm for the processing of data gathered along a cylindrical surface. Advantages and Applicatons Advantages and Applications The system allows GPR measurements on columns with an accurate positioning system and in safe The system allows GPR measurements on columns with an accurate positioning system and in safe conditions for the human operator. The system is enhanced with a code implemented on purpose (there is conditions for the human operator. The system is enhanced with a code implemented on purpose (there is no commercial code conceived for data gathered along circular surfaces). Applications of interest are the no commercial code conceived for data gathered along circular surfaces). Applications of interest are the investigation of columns of historical buildings or the pillar of modern buildings. investigation of columns of historical buildings or the pillar of modern buildings. Development stage Development stage A prototype has been implemented, on which an enhancement is being implemented with reference to the A prototype has been implemented, on which an enhancement is being implemented with reference to the construction of curved clamps for the movement of the antennas. construction of curved clamps for the movement of the antennas. A code for the processing of data gathered along a circular surface has been developed. 59 A code for the processing of data gathered along a circular surface has been developed. The next step is the validation of the system on a test site, that has been built on purpose. The next step is the validation of the system on a test site, that has been built on purpose.