Transfert de technologie

Life Detection, Monitoring and Localisation

Applications

Finding a burried person.
[Validation test]  

 > Protection civile

• Avalanche or earthquake victim detection.
• Mine clearance.

 > Médical

• Remote respiration frequency monitoring.

 > Défense

• Human presence detection by complete 3D building scan.

 > Génie civil

• Detection/localization of hidden objects e.g. buried in the ground (pipes) and/or hidden by a wall.

Keywords

• Signal treatment, Image treatment, Respiration measurement, Human presence detection, Doppler radars.

Advantages

• Use of unique methods and radars to detect and localize life, with eventual respiration frequency (Patent).
• Ability to localize moving or stationary electrical conductors.

Testing

• Heartbeat detection and frequency:
  • Detection of a beating heart, however fast or slow.
  • 10m diameter spherical area covered around antenna.
  • The respiration frequency is found based on the utilisation of the Doppler effect.
  • Very sensitive radar used: HF Pulsing, coherent, multistatic, bifrequencial radar.
• Localization:
  • Localization possible for any electrical conductors, moving or stationary.
  • Ability to see through various materials (walls, ice, water, tree trunks etc.) by adapting radar frequencies.
  • Localization of the source is based on spectral interferometry techniques in two domains; spatial and spectral.
    
    

      Total power received by the antennas varying with time.
      Shows the associated movements carried out by the victim.

© ONERA 2009 - Crédits et conditions d'utilisation