ground camera

[Great_Alex]

I heard about a camera(perhaps of USA military)that can show under ground objects (metals or others )very well . i don't say about thermal camera (or super fine GPRs).i don't know it use of Xray or Gamma ray but it can show objects 25 meters under ground very good.it has a motherstation device with wireless connection and a laptop computer and can estimate depth and size of target .
briefly you can see target.

i'm looking for that device and more information about that , do you heard something like this or have information about it ?

[strujas]

If something like that really exist,,I dont belive that any of us civilian can obtain that (Only if He works in NASA)!
I am dreaming for something like that!!!!
You have much more simple devices like EMFAD UG 12 or OKM EXPLORER ,,,GEMS....but they are not so reliable

[Leto]

Ultra-Wide-Band Radar

I heard about a camera(perhaps of USA military)that can show under ground objects (metals or others )very well

Probably this is it.
Technique developed a lot since then, but not for us mortals...
From Speleonics 14 Feb. 1990

[Great_Alex]

Dear Leto

maybe it was UWB radar .but it was very portable and price about 500000$. are you have more complete information about that ? is it dangrous tool?

[schatzsucher]

where the schematics?

[Leto]

Alex
sorry can't help you much with this.

is it dangrous tool?

100MW lasers used at this experiments are surely dangerous . There are other types of Impulse Radars already developed, like MIR - M for micropower, surely this is the future of GPR.

schatzsucher

where the schematics?

sorry to you too: I sticked my head too close to that Alexandrite Laser - erased my memory at once ...

[schatzsucher]

ok, so i´ll do it.
but, it´s nearly the same.
sorry, file emp.pdf is in german.

[Leto]

EMP


Thanks schatzsucher for this.
I never saw better description (in such detail) of EMP project.
..and good for me as I can read german.
for all the others translation from last paragraphs:

...Here shown device can with proper constructed antenna destoy computers and semiconductors in distance of 600 meters. Please do not point the device towards humans or electronic devices. ..

[Seeker]

Hi guys,
at those files has pictures of first TX and RX invented by Heinrich Rudolf Hertz in XIX century.Of course not with semicomductors , but the same principle.
So , that TX can't produce single EM pulse , but only burst of hushed waves.
For single pulse see ZETEX's applications of avalanche transistors .

regards

[Great_Alex]

Thanks Leto & schatzsucher I avoid that .
I can live without treasure.

[Max]

I heard about a camera(perhaps of USA military)that can show under ground objects (metals or others )very well . i don't say about thermal camera (or super fine GPRs).i don't know it use of Xray or Gamma ray but it can show objects 25 meters under ground very good.it has a motherstation device with wireless connection and a laptop computer and can estimate depth and size of target .
briefly you can see target.

i'm looking for that device and more information about that , do you heard something like this or have information about it ?

Hi Great,
yes there are many out there...but keep in mind that this stuff is not for civilian...need some radioisothope source of gamma-rays...etc...and it's really dangerous to healt of operators.

Mostly used in demining stuff...or e.g. on-board in tanks...etc
but these are sensitive technologies...you know...can't be exported...etc etc etc...

CISRO in Australia has a prototype as I posted...somewhere in remote sensing sub-forum...find it and you will know more.

Best regards,
Max

[99thpercentile]

Since I work for the US Army and I am a geophysicist let me comment on this. It doesn't exist. There is no technology that is physically possible that can find a target 25 meters under ground with centimeter resolution. In a perfect environment (dry sand, low conductivity) a GPR system could penetrate 100 meters, but not with centimeter resolution, maybe meters. This has to do with the tradeoff between pentration and resolution. Lower frequencies penetrate farther, but offer poorer resolution. Higher frequencies have high resolution but attentuate quickly leading to poor depth penetration.

[Max]

Since I work for the US Army and I am a geophysicist let me comment on this. It doesn't exist. There is no technology that is physically possible that can find a target 25 meters under ground with centimeter resolution. In a perfect environment (dry sand, low conductivity) a GPR system could penetrate 100 meters, but not with centimeter resolution, maybe meters. This has to do with the tradeoff between pentration and resolution. Lower frequencies penetrate farther, but offer poorer resolution. Higher frequencies have high resolution but attentuate quickly leading to poor depth penetration.

Hi 99,
Yes. Not with RF, anyway not. Not GPR. I agree. But, as you surely know, gamma is a completely different story ...an example...here:

http://www.minerals.csiro.au/main/pg2.asp?id=36013

well...of course there are a lot of problems reaching 1cm resolution at 25meters underground...but at 5-10 meters is not a problem.
But with no discrimination. Enviromental problems, hazards...
This stuff is too "dangerous" I think, and not for hobbists in any case.

I think he was talking about a gamma-ray camera...not GPR.

Best regards,
Max

[Great_Alex]

Hi Max

last year i saw a russian military camera for finding mine i think it use of xray because it could show skleton of human body or metals but not deep .
about ground camera :
first i said i heard about it but infact i use it once.portable part of that is not like a camera it's like a box about 25" * 18" * 3" and i test it with a small tea cup buried about 6 meters deep . i could see the cup very well and the other information about my sample (volume depth ).... i don't know what was that device but it's work very well.it has noname or sign and the laptop's computer preprogramed for that device (it has not windows or such OS).

Thanks

[michael]

Oh, I had heard just such thing made by a Russian electrician.
3-4 years ago.
at that time I saw one team here and they told a couple of years ago they had one detector that was made by a Russian engineer, the guy who was acquainted with this Russian was another engineer(their friend) who had deceased.
I here describe behalf of them what they told and had seen:
" The device had one central unit that should plugged directly to 220V energy and from other side connected to one big and tick probe and from one other side to a laptop. they should insert probe about 20 meters far from central unit and laptop and should dig a small hole to make a little pit to put probe inside it and pushed it inside ground in the pit.
people should keep away probe ( for safety caution). When he turned it on they could clearly see big dense objects inside ground such as big stones or big metal targets like in air from over perspective. its' penetration power was for 15 meters radius and 12 meters depth."
they had found one jar full of coins at 7 meters by it.
They told in one skirmish some guys stole it and after that never could make a connection to maker or any people who knows this kind of system. they told it was a fantastic device.
of course at that time I didn't believe them although they were so much serious.
But now my mind and opinion has been changed and I see everything is conceivable.