Undergound Convergence & Deformation Monitoring

Early warning for fall of ground in underground mines

NanoRadar monitors sub-millimetre movement of rock in underground mines, providing early warning of potential collapses. With its advanced interferometric processing, long battery life, and robust, waterproof design, the NanoRadar is a reliable and convenient tool for monitoring underground environments. 

This sensor was co-developed by Geobotica and AngloAmerican for underground geotechnical monitoring. Its system is cutting edge technology made to detect precursor rock movement that may lead to a collapse. 

A revolutionary underground convergence monitoring radar

With its advanced interferometric processing, NanoRadar is able to measure sub-millimetre movement of rock, providing early warning of collapses. Its long battery life allows for months of operation between recharges, making it a reliable and convenient choice for monitoring. Plus, its robust, waterproof design with no moving parts ensures it can withstand even the toughest environments. At a weight lighter than a glass of water and small enough to fit in your pocket, NanoRadar is the perfect solution for active monitoring. 

High precision, real-time monitoring:

Using the trusted technology of slope stability radar used over the world in the mining and civil industries, it can measure small rock movements at a precision rate of 0.1mm. It scans every two minutes 24/7, and converts that data into space-time images and graphs, allowing strong geotechnical analysis. For long-term monitoring, the scan interval can be changed to once every few hours, extending battery life for very long intervals.

Ease of use:

With no buttons, no moving parts, and no set-up necessary, NanoRadar can start and stop scanning automatically. It can sense if it is moving or if it is stationary, and its automatic software can separate between rock movement or the workers and machinery. That way, when your alarm is triggered, you can be confident it is because the ground is moving.


NanoRadar can be used for mobile monitoring in work areas or as a fixed installation for long-term monitoring.

Real time stability monitoring for your site 

For mobile monitoring of work areas, one or more radars can be used in an area, allowing NanoRadars to move from work area to work area while automatically pairing themselves with a local synchroniser. Workers receive real-time alerts when movement passes a threshold, while Geotechnical engineers can use the GeoPoint software to interpret and analyse the data to gain valuable insights about the rock conditions.

For long term monitoring, NanoRadar’s tiny form factor allows it to be mounted permanently on a side wall or rib, in a spot that is protected from passing machinery and vehicles. The system runs on batteries and scans at regular intervals, allowing data to be collected for months-to-years depending on scan frequency.

The system can be connected to back-bone communications to automatically feed data back to the surface, or data can be manually harvested at regular intervals using a local wireless connection direct to the system.

NanoRadar scanning the roof of an underground mine.

Smart radar for automatic convergence monitoring 

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Motion sensing

Because NanoRadar can tell when it is bumped by a passing worker or being moved from one location to the next, it will automatically stop scanning and begin again once it is stationary. This ensures there will be no false alarms.

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Low power communications

NanoRadar leverages the lowest power wireless communications technologies available today. This allows NanoRadar to be powered by small batteries and can operate for long periods of time without needing to be recharged.

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Hibernation mode

When NanoRadar is turned upside down, it automatically switches off When you turn it around the right way, it will switch back on again.

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RockD Algorithm

The Rock Detector Algorithm (RockD) scans an area over 1000 times in just a few seconds. With this data, it classifies if a pixel is rock and other solid objects, or if it is a human, operating machinery, or other vibrating or slightly changing objects. RockD automatically removes any pixels that are not rocks and only sends information about the rock pixels to the synchroniser.

NanoRadar mounted on a tripod while facing a rock wall.

The NanoRadar system is designed to detect rock movement and alert when movement has exceeded a threshold in underground slopes and openings. The system is designed for ease of use, high precision and flexibility, so your mining operation can continue on without any doubts about safety or stability. 

Book your free demo of nanoradar

Contact us to book your free online demo of NanoRadar and the RockD software. In the session we will take you through case studies, show you a NanoRadar system and answer any questions you have. It is a free and no-obligation way of learning if this cutting edge technology is suitable for your site.

NanoRadar is an Australian-made, patent-pending innovation from sensor-focused research and development house Geobotica.  

Brisbane-based Geobotica works with industry partners to develop world-leading sensors, software and AI solutions for industry. 

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