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Watching through walls


Law enforcement only

PRISM is based on a technology which uses radio waves of the UWB (ultra wide band) radar system and can reproduce three dimensional images of movements behind a wall, up to twenty meters far away. The reproduced images are similar to those obtained by ultrasound scans, with a quite precise resolution.

This invention can be applied not only to military purposes, saving lives of soldiers engaged in anti-terrorism actions in urban environment, but also in the battle against crime, for instance in the search of kidnapped people, and for civil purposes, in the search for survivors after a natural disaster.

When it comes to saving people in a collapsed or burning building the time factor is essential. Often the rescue squads have to spend plenty time and energy to move the debris, or risk their lives among fire without being sure whether there are lives to save behind the walls.

Watching through walls



  • Ability to detect 3D position of occupants to indicate standing, sitting or lying, going up/down stairs or on an upper floor.
  • Sensitivity to very small movements.
  • Location of multiple occupants.
  • Penetrates reinforced concrete

The system can be customized to meet particular user requirements, such as:

  • Stand off operation.
  • Extension in range.
  • Mounting on remote controlled vehicles.
  • Coordination of multiple PRISM systems.
  • Wireless data transfer (standard or bespoke protocols).

PRISM user side view interface showing range and height target location in 3 dimensions, through both plan/elevation views and a 3D perspective view which can be rotated. Operator actions remain simple, while Plan view textual information showing floor position includes co-ordinates and target signal strength.

Specifics Prism:
Range resolution 30cm
Angle resolution 140mm x 100mm
Maximum range To 15m deep x 4m wide x 2m high, configurable.
Update rate 20 scans per second
Wall materials Proven with:
  Sheet Rock (2 sheets + gap) - timber

Cinder block
  Concrete block
  9" brick

Reinforced concrete
Frequency range options 1.7-2.2GHz (between FCC Restricted Bands)
Transmit power -30dBm per MHz in-band
Dimensions and Weight 385 x 378 x 112mm, 3.5kg including handles
Battery 2 hours continuous use on a single charge
This specification is advance information and is subject to change without notice

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Disclaimer: The customer is responsible for the knowledge of the laws that rule the use of these devices in his country.

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