rayleigh-(das)
  • DAS - Distributed Acoustic Sensing system overview


    • Low capital and operational costs, using just standard telecommunications grade fibre cables
    • Single system performance equivalent to tens of thousands of individual sensors
    • Reliable and proven non-stop surveillance system for real-time identifying and alerting
    • Tuneable to minimise “false positive” rates across any terrain
    • Fully scalable for installations of any length
    • Can be integrated with existing systems, including CCTV
    • A single DAS unit can interrogate a fibre of 50 kilometres in length, detecting vehicles at up to 50 metres on each side of the fibre.  Events are detected to an accuracy of 1 metre.



    • Standard single-mode optical fiber.
    • Measurements all along a 50 km fiber = 50,000 sensors.
    • Backscattered light provides measurement point every 1m.