DAS and algorithms.

DAS is a technology that uses fibre-optic cables as sensors to register vibrations and acoustic signals along the entire cable length. A single fibre can monitor several kilometres in real time.

Landmarker uses DAS hardware from established suppliers. What makes Landmarker unique is not the sensor, but the interpretation of the data it produces.

When something happens near a buried fibre cable (excavation, drilling, traffic, vibrations), it changes the propagation of light in the fibre. The DAS unit registers these changes and produces a continuous data set for the entire route.

Raw DAS data is noisy and requires advanced signal processing to become operationally useful. Landmarker has developed its own algorithms that classify activity along the route.

• Separates mechanical excavation from background noise (traffic, weather, sites)
• Identifies machine type based on vibration pattern
• Calculates distance from fibre to activity
• Produces operational information, not raw data

In addition to the algorithms, Landmarker has developed its own field methods. From planning and survey to verification and delivery. The methodology makes findings traceable and verifiable.