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 | | From: | eric bazan | | Subject: | 'through-the-wall' imaging technologies | | Date: | 16 Nov 2004 16:26:00 -0800 |
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 | (Sorry if this gets posted twice...)
Hi, I'm back. More spook technology questions. :)
Now relating to 'through-the-wall' imaging technology.
The needs and uses for this kind of technology are obvious,
especially in the US post 911.
Already there are many references to 'radar flashlights', which
may soon be used (if not already) by police departments. See:
http://www.gtri.gatech.edu/seal/radar/proj_flashlight.html
http://unisci.com/stories/20012/0416015.htm
Then there's 'older' technologies which use x-rays and other high
energy particles and radiation, such as used at airports to screen
luggage. And some the new 'backscatter' x-ray devices which
can be used to screen people and vehicles.
I'm more interested in hypothetical devices using a big chunk of the
microwave spectrum, all the way into the far infrared. This could
be used as a 'spotlight', and with extensive computer processing be
used to give a near 'realtime' view of things. Since my understanding
is microwaves interact strongly with water molecules, fats, and many
other organic molecules this frequency would be usefull for locating
'organic' objects (people) in buildings.
Excerpted (again) from:
http://www.angelfire.com/nj3/soundweapon/ultrasonics.htm
"
This imaging technology is incredibly effective in seeing through house walls
and determining the location of a person inside a house. Through a wall, the
imaging device can even distinguish a person's hand being held in front of his
face. The capability of this through-wall imaging technology to see people
through walls is far greater than the general public has been led to believe. I
was informed that the newest devices that incorporate this through-wall imaging
technology can be carried with one hand and are now the size of a small video
camcorder. Click here to read about "Through Wall Imaging Technology".
Imaging technology that can see through walls and other materials operate in
one of two modes, "Active Mode" or "Passive Mode". Active Mode is used to see
through walls and other thick materials. In Active Mode, the imaging technology
actually uses microwave radar signals, electromagnetic waves, in the range of
30 GHz to 300 GHz to see through walls. This range of microwave radar signals
is very useful because the radar signals pass through walls of a house but
reflect back off people and other objects inside a house. An object's
characteristics will determine if or how well a certain microwave radar signal
will reflect off it. The characteristics of an object include what material the
object is made of, the static charge on the object, and the temperature of the
object. The imaging device will transmit very short bursts of each microwave
radar signal over the range of 30 GHz to 300 GHz and then detect any reflected
signals from each burst. The computer-controlled device can scan through
hundreds of microwave radar signals per second.
"
Again, any comments, thoughts, links of this topic?
-Eric B
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| | From: | Martin Trump | | Subject: | Re: 'through-the-wall' imaging technologies | | Date: | Wed, 17 Nov 2004 13:52:16 +0000 |
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| In message , eric bazan
writes
>I'm more interested in hypothetical devices using a big chunk of the
>microwave spectrum, all the way into the far infrared. This could be
>used as a
Try a Google for "terahertz imaging". Masses of info there.
Regards
--
Martin Trump
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