GPS and 3D Tracker
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3D Tracker™ software uses global positioning system (GPS) technology to accurately compute 3-dimensional positions in real-time. It was specifically designed for monitoring the movement of fixed structures such as bridges, dams, oil platforms and large buildings, but also can be deployed on natural features including volcanoes, landslides and subsiding ground. 3D Tracker is the first software product to simultaneously compute positions to millimeter accuracy in real time for dozens of GPS receivers. The software implements a custom-tuned Kalman filter with triple differencing and then sends results to a graphical user-interface that provides up-to-the-second information about each site being monitored. The 3D Tracker graphical screens are user-configurable and clearly display information such as the current 3D displacement vector, the current rate of change and the displacement history for each site. Alarms and notifications can be set to make users aware of excessive motion. 3D Tracker is available for sale, lease or as a service provided by Applied Geomechanics. System requirements: Windows 2000 or later, 1 GB RAM. |
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3D Tracker-LT is a powerful solution for monitoring the movement and deformation of large natural and manmade structures. Typical applications include landslides, mines, buildings, bridges, dams and volcanoes. 3D Tracker-LT processes signals to both the GPS and GLONASS satellite constellations, which together comprise the Global Navigation Satellite System (GNSS.)
A 3D Tracker-LT system consists of multiple monitoring stations, each of which receives signals from the GNSS. Each station relays the signals to our Gemeni software package, via Wi-Fi and the Internet. Gemeni calculates 3-dimensional station position to an accuracy of ± 5 mm and updates this position hourly. The monitoring stations are of two types, remote and reference. Remote stations are located on the ground or structure to be monitored.
Reference stations are placed on stable ground and provide the stable reference needed to track movement with high accuracy. In a typical installation only one reference station is needed. Baseline lengths—the distance between the reference station and any remote station—can be up to 5 km and still maintain the specified system accuracy of ± 5 mm.
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