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Millimetre monitoring accuracy of ground movement

Remote monitoring of ground movement with +/-5mm accuracy is promised by the new 3D Tracker-LT deformation monitoring system. According to the tracker’s manufacturer, Applied Geomechanics (AGI), the system is specially designed for the dynamic needs of mining, bridge, dam, landslide, and geotechnical engineers, and provides hourly position updates.

The system is designed to be used with one GPS reference station located on stable ground, with an array of remote stations sited to track any movement or deformation on the structure being monitored. The tracker uses signals from the US and Russian-owned GPS systems to offer good coverage.

Information collected by the tracker is relayed to AGI’s Gemeni software server via the system’s integrated Wi-Fi and internet access point. Gemeni processes the data and provides position updates once per hour.

Results are delivered to the user over the internet using AGI’s Vista Data Vision reporting service, which includes graphing and alarm notification features. According to AGI, the system is well suited for the industry as it requires no on-site computer. “After installation, monitoring stations can begin data collection within 65 seconds from power-up,” says the company.

It adds: “3D Tracker-LT’s energy efficient design and Wi-Fi communication interface reduce power draw to less than 1W per receiver, making 3D Tracker-LT ideal for remote installations with limited on-site power.”

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