WEBVTT

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Our task is clear we need
a way to safely detect explosive

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threats on people and in their bags and
we have to this without physically

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searching them or impacting their flow
through the transit system.

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The Surface Transportation Explosive
Threat Detection Program is working in

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collaboration with the surface transportation
system end users and our stateholders

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as well as our partners at Johns Hopkins
applied physics laboratory and MIT

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Lincoln lab to close the surface transportation
security gap through innovative

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technologies designed to work together
and provide a layed approach to security

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throughout the transportation system.
We're also investing in standoff threat dedection

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systems using complementary parts
of the electromagnetic system.

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These systems will serve as a key component
of the layered screening concept.

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This is the Centimeter Wave Array that
we're developing here at

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APL as apart of our layered threat detection
approach. These

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would be incorporated into the walls
you would be going down a hallway,

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people can just walk in front of this, this
images them but at

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such a blurry level that most people would
not consider this to be particularity invasive.

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Its only the very large things, that you
know, hey that looks like a rife, that looks like

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an explosive. So that an operator will
see the people walking by the array

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and the large false colored red blob that
says he's concealing something.

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The power and the frequencies we're emitting
are the same as put out by your

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wifi. This will not harm you in any way.

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These are lower then exposures that you
will get from your own cellphone.

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Our concept is use a low-cost system
like a centimeter wave system

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as the initial layer of defence identifying
potential items of interest.

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Then we can use a millimeter wave system
as our next layer providing a more detailed

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view of potential threat items. Both layers
working in a safe way that

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maintains the traveling publics privacy.

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This system is a prototype standoff microwave
imager. Its a panel that's placed on a wall.

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or a corridor or perhaps on the ceiling,
the idea here

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is that if you come into proximity of the unit
with a concealed bomb or rifle

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its going to be able to see it. Microwave
sensing can complement FOVEA

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by providing information that FOVEA doesnt have.
So you can immagine

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a scenario where FOVEA alerts us to the fact
that somebody has

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dropped a bag and walked away.
Now if that's all we know, we don't kknow

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if the bags empty, or weather we need
to call in a bomb tech to check things out.

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Microwave sensing can tell us if the
bag is empty or its full of metal.

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Or perhaps if it has some other suspicious
item inside. That will allow us to

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tailor our response to save resources,
save time and keep everybody safe.

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[Music]