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Liberty Defense Holdings Ltd
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Liberty Defense talks up Hexwave technology

2019-06-06 09:25 ET - News Release

Mr. Bill Riker reports


Liberty Defense Holdings Ltd. has released detailed information on the function of its security product, Hexwave.

Hexwave is a weapons detection technology product that is being developed in response to the evolving needs of urban security in public spaces, including sporting arenas, schools, malls and places of worship. It is designed to improve threat detection and quicken the response time of security teams, while minimizing interruption to the flow of daily life and foot traffic in these places.

It uses active 3-D radar imaging and artificial intelligence (AI) to detect a range of threats, including both metallic and non-metallic weapons, in both indoor and outdoor environments.

By using AI rather than human assessment, the chances of a false detection due to human error are reduced. Further, no personal identifiable information is collected or viewed by security teams or other operations personnel, which helps protect the privacy and modesty of individuals.

Each Hexwave unit operates individually and can be combined with additional units that work together, making the system completely scalable to a facility's unique security requirements. Additionally, each Hexwave unit is mobile and can be quickly deployed to a higher-priority perimeter or entrance point, based on crowd control or other operational factors.

What is Hexwave?

Hexwave is Liberty's proprietary weapons detection product and consists of four major subsystems that work together:

  1. Antenna array and transceiver (captures real-time data);
  2. 3-D radar image generation (converts captured data into 3-D radar images);
  3. AI and deep learning (interprets the data and 3-D radar images to detect threats);
  4. Smart interface functionality (provides connectivity to existing security systems).

Antenna array and transceiver (captures real-time data)

Liberty has the exclusive global licence for active 3-D radar imaging technology from the Massachusetts Institute of Technology (MIT). In this design, a transceiver generates the low-power radio frequency signal, which is then sent through array antennas to illuminate the detection space. The array antennas receive the reflected signals containing the data.

3-D radar image generation (converts captured data into 3-D radar images)

This subsystem receives the data from the antenna array and converts it to a 3-D radar image.

AI and deep learning (interprets the data and 3-D radar images)

Hexwave uses AI and deep learning to recognize concealed weapons and predict the weapon type. This component of the technology uses artificial neural networks (ANN), which are advanced AI methods derived from how the human brain learns and recognizes objects. The actual training of the neural network is done at Liberty's engineering centre of excellence (COE) in Atlanta, Ga.

Smart interface functionality (provides connectivity to existing security systems)

This enables Hexwave to interact with a facility's existing security infrastructure, such as surveillance and access control devices. It provides connectivity and Internet of things (IoT) integration with IP surveillance devices, and also provides both analytics and threat alerts that can be sent to surveillance and access control devices.

About Liberty Defense Holdings Ltd.

Liberty provides security solutions for concealed weapon detection in high-volume foot traffic areas and has secured an exclusive licence from MIT Lincoln Laboratory, as well as a technology transfer agreement, for patents related to active 3-D imaging technology that are packaged into the Hexwave product. The system is designed to provide discrete, modular and scalable protection to provide layered, stand-off detection capability. This is intended to provide a means to pro-actively counter evolving urban threats. The sensors with active 3-D imaging and AI-enhanced automatic detection are designed to detect metallic and non-metallic firearms, knives, explosives and other threats.

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