Volumetric sensor buried with a score of centimetres, detecting the vibrations caused by the passage of a vehicle or a man (going, running or crawling along the supervised perimeter). A field of detection ultra high frequency is created around each pair of cables, allowing the detection of the intrusions.

Currently SORHEA proposes INTREPID MICROTRACK, buried detector which can manage a surveillance zone until 400m. Composed of a central processing unit and two pairs of cables ultra high frequency, INTREPID MICROTRACK locates with precision the point of intrusion. That makes it possible to easily discriminate the small animals as well as the bad weather.
Moreover INTREPID MICROTRACK is the only buried cable of detection able to freely define zones of detection in any point of the supervised perimeter.
INTREPID MICROTRACK is the first buried cable designed to adapt entirely to its environment, able to ensure a uniform detection throughout the perimeter.

Principle of detection and localization: Each buried cable of system INTREPID MICROTRACK is divided into cells of 2m approximately. One thus obtains 100 cells per cable of 200m. To initiate detection, central processing unit INTREPID MICROTRACK sends by the means of the transmitting cable a signal ultra high frequency coded to broad band. This signal, received by the receiving cable creates a field of electromagnetic detection invisible above and in lower part of surface of the ground and all along the pair.