Nemfis ground scanner

Привет Народ. 

This device is a Professional Precise Geophysical Instrument made in Russian by Russian National Geophysical Academy. Its a quite newest technology for undersoil scanning. 3D spatialization is obtainable by accurate alignment of coil systems. It transmit simultaneous 14 multiple multi-period pulses at a full frequency diapasons up to 250 KHz and precise meassure impulse responses of each eigenvectors fields. Its a full 3D Real Time Vectors System. The big ammount of datas are precessed by DSP by very complex mathematical apparatus, which are patent protected in a National Russian Patent Office. Nemfis is a quite new type of 3D conductivity meter. The precessed datas are fed to PDA (personal digital assistance) for graphically visualisation of undersoil contents. The price of this instrument is 24200 bucks excluding VAT. The biggest advantage of this complex system is High Resolution Real Time Digital Signal Processing. Many excavations from Mongolia, India and Italy validate his siperiority among the other instrument in this class of geophysical instruments.

Regards


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I forgot to say, all control of main unit is wireless. NEMFIS use well known BlueTooth technology to connect to PDA. In a working position the lenght of unit is 2.75 meteres while in a transort bag is a little shortly  1.4 meters. The weight of unit is 8 kg. I dont know right value in pound sorry. The most important thing for geologist is that NEMFIS can do a job uninterruptably 10 hours. This is preferrably geophysical equipment, but why dont prospect with it???

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We have drive 3 hours so we have arrive to second tumulus in the evening. Operator start to work in map mode to test area on the highest point (17x12m). Second hill more easy to scan but also has many trees and bushes on some places.



There is the pictures from some freq:
12 frequency on PDA


same 12 frequency on PC


1 freq


6 freq


14 freq


We find several contrast anomalies that also will checked in several weeks.

While work with device I can tell that it has very simple operation through PDA, the results can be shown like curve of signal, cuts of the profile or map of frequency in apparent conductivity, resistivity, ADC quantums and in quadrature or in-phase components. The values appear after you push by stylus on any point of the map.





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I have tried to scan several points - PDA has button for fingers that alias with "start scan" software button, so all operation while scanning goes by one finger. The weight of the scanner load the hand but because hand is straight - it is possible to carry Nemfis long time.

I will return to complete this review after we dig the places that locates on the maps.

Best regards

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Hello C- rat- will you check on that in case there are interested members?

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