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 Post subject: Need a GPR ASAP
PostPosted: Mon Oct 04, 2010 8:14 pm 
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Joined: Wed Sep 29, 2010 1:02 pm
Posts: 1
I have worked with several pulse-based detectors, and due to depths issues I need to provide a GPR .

1.I need the device especially and solely for archaeological ;

2.I need a high resolution device with a deep power of penetration between the range of 0 to 8 meters to be able to clearly locate cavities and underground chambers under the ground;

3.the device is expected to clearly locate a 30 Sq cm metal tank buried at 7meters under the ground;

4.the highest depths I need the device to penetrate is 8 meters, due to excavation problem, so a device with at most 8 m power of penetration and high resolution is perfect choice;

Kindly send message specifying your device and price
many thanks


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 Post subject: Re: Need a GPR ASAP
PostPosted: Tue Oct 05, 2010 6:13 pm 
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Joined: Fri Apr 17, 2009 7:52 am
Posts: 379
Location: Boden, Sweden
nassiree wrote:
I have worked with several pulse-based detectors, and due to depths issues I need to provide a GPR .

1.I need the device especially and solely for archaeological ;

Our GPR units have been used in Turkey for archaeological purposes with great success.

Quote:
2.I need a high resolution device with a deep power of penetration between the range of 0 to 8 meters to be able to clearly locate cavities and underground chambers under the ground;

High resolution and deep penetration are concepts in conflict, the deeper you penetrate the ground the worse the resolution becomes.
Quote:
3.the device is expected to clearly locate a 30 Sq cm metal tank buried at 7meters under the ground;

30 square centimeters of anything is only 6x5cm object or something alike, at 8 meters depth there is no gpr that can resolve that small object. Not ours, nor anybody's else, be careful if promised otherwise.
Quote:
4.the highest depths I need the device to penetrate is 8 meters, due to excavation problem, so a device with at most 8 m power of penetration and high resolution is perfect choice;

An antenna from 50 to 150MHz would be your best choice, but it won't give you the requested above resolution.

_________________
Reinaldo Alvarez Cabrera
Geoscanners AB
Sweden
http://www.geoscanners.com


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 Post subject: Re: Need a GPR ASAP
PostPosted: Fri Jan 28, 2011 4:22 pm 
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Joined: Fri Jan 28, 2011 4:18 pm
Posts: 3
Ground Penetrating Radar Equipment

50MHz Antenna
The 50 MHz frequency is not allowed to be sold commercially in the US anymore. This is a rare antenna which has great depth capabilities.
In West central Florida I was able to achieve depth to 240ft in some areas. This antenna is ideal for sinkhole investigations, preconstruction investigations, mining operations utilize this device to locate muck or clay pockets embedded in limestone as well as fissures in granite. This is an unshielded antenna and is primarily used for deep subsurface investigations.

100 MHz Antenna
The 100 MHz is pre FCC and is a versatile shielded antenna that is great for sinkhole investigations as well as other deep to medium depth capabilities. My standard setting for this frequency was 70 ft in West Central Florida area but in ideal conditions may reach depths to 100+ ft below existing ground surface.

500MHz Antenna
The 500 MHz antenna is wonderful antenna and has proven itself over and over again. I have used this frequency to find voids and cavities below concrete slab, verify steel embedment in concrete columns and slabs. I have located millions of dollars in buried cash for government agencies as well as locating over seven hundred buried human remains.
I have located buried murder victims for sheriffs depts. and utilized this device for various government agencies to locate drugs and stolen items. This radar has a depth capability of approximately 15 ft and is fantastic for utility location as well as UST.

1 GIGHz

The 1 GIGHz frequency is another very rare frequency that is ideal for location embedded steel in concrete as we as shallow utility location. It can also be used to determine asphalt thickness as well as base course thickness for roadways.
This frequency is also great for locating drugs and other illegal substance in walls as well as columns. This is for shallow investigations with a depth capability of about 3 ft.

All equipment will be sold with all cables, control panel as well as software and batteries and 2 computers.

Equipment can be demonstrated for serious buyers. Training can be provided at an additional cost anywhere in the world.


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 Post subject: Re: Need a GPR ASAP
PostPosted: Thu Jul 14, 2011 11:44 pm 
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Joined: Sat Jul 09, 2011 10:21 pm
Posts: 11
hmmmmmm


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 Post subject: Re: Need a GPR ASAP
PostPosted: Sat Jul 16, 2011 1:28 pm 
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Joined: Sat Jul 09, 2011 10:21 pm
Posts: 11
thanks for the detail, nice work :)


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 Post subject: Re: Need a GPR ASAP
PostPosted: Mon Nov 14, 2011 9:46 am 
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Joined: Mon Nov 14, 2011 9:42 am
Posts: 7
Location: Assen, Netherlands
We have good experience with the Dutch brand "Groundtracer". We use this GPR specially for archeological purposes. If you want i can provide you with some contact info.

_________________
Dick Broekhuizen
Grontmij Netherlands bv.

Projectleader Geophysical department

http://www.grontmij.nl


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