Locator One GNSS Sensors
The Locator One GNSS sensor is designed for automated monitoring of settlement and lateral displacements. Datasheet
GNSS Receivers
The Global Navigation Satellite System consists of satellites, ground control stations, and receivers. Receivers acquire and tracks signals from constellations of satellites. The geodetic information coded in the signals is collected and processed to resolve their absolute geospatial location.
Locator One GNSS Sensor
The Locator One is a compact, self-powered sensor that combines a GNSS receiver, ground-facing radar, and cloud connectivity. It autonomously acquires and transmits geodetic observations to the Cloud.
The receiving cloud server processes the observations, applies adjustments, and outputs absolute coordinates. Changes from baseline coordinates reveal the magnitude and direction of displacements.
A GeoCloud project website presents the data visually in map views and graphs and sends out alerts if alarm thresholds are exceeded.
Locator One Applications
- Automating measurements of settlement plates, including both the settlement of the original ground surface and the current height of fill.
- Monitoring potential displacement and settlement of buildings and utilities near excavation and tunneling projects.
- Monitoring horizontal displacement of earth retention structures such as MSE walls or sheet pile walls.
- Monitoring slope stability at open pit mines, tailings dams, and highway cuts.
Locator One Advantages
- High-precision 3D measurements.
- Less equipment needed on site.
- No line-of sight or distance issues.
- Works in fog, rain, and snow.
- Simple to install, simple to use.
- Compact and self-powered.
- Very little maintenance required.
Locator One provides high precision measurements and is self-powered, weatherproof, and low maintenance.
Locator One sensor monitors consolidation settlement. Radar sensor monitors distance to ground surface.
Locator One is easily installed on dams, bridges, aquaducts, storage tanks, and retaining walls.
Locator One can monitor slope stability at open pit mines, tailings dams, embankments, and road cuts.
Locator One can be installed on vertical walls if elevated above obstructions.
Locator One can be installed on structures to monitor for adverse effects of tunneling or excavation activities.
Locator One Specifications
Post Processed Precision:
±2mm horizontal, ±4 mm vertical.
Signal Collection: 186 channels to receive signals from GPS, GLOSNASS, Galileo, QZSS, and BeiDou satellites. Default collection window is 5 minutes. If collected measurements are insufficient or poor quality, the sensor retries 90 minutes later.
Measurements per Day: 6 per day is standard. Up to 24 per day is possible at ideal locations.
Weather Rating: IP 65 for water ingress, -4 to 140 °F for temperature.
Power: Supercapacitor charged by built-in solar panel. Fully charged supercapacitor can
provide 8 months of power without solar.
Ground-Facing Radar: Millimeter precision when used with base plate as target.
Technology and specifications courtesy of Basetime B.V.
Installation Requirements
Cellular Connection: Cellular connectivity is required. Each sensor connects independently via its built-in universal SIM.
Measured Points: Locator One sensors can be mounted directly onto settlement plate risers or structures.
Reference Point: One sensor should be installed at a stable location outside the zone of influence.
Clear Horizon: Ideal locations for the sensor have a clear horizon with no obstacles above an elevation of 10°. This is especially important for the reference point.
Mounting Hardware
Threaded Mounting Plate: Connects sensor to 1-inch diameter riser pipe.
Riser Pipe: Elevates sensor for better view of the sky. 1-inch diameter pipe, threaded at one or both ends. Supplied to required length or sourced locally.
Base Plate for Structures: Anchors riser pipe to horizontal surface of a structure. Has threaded fitting for
1-inch riser pipe and holes for mounting bolts.
Settlement Plates: Standard settlement plate components. Includes threaded mounting plate above. See Settlement plates
Mounting Plate with Clamp: Clamps sensor to vertical elements such as a sheet pile.