ClamVision integrates with GPS and GNSS receivers across your entire dredge spread and uses those positions to guide equipment to the exact coordinates of each planned dig.
Multi-channel GPS integration
A modern dredge spread may have GPS antennas on the barge hull, on the crane or boom, on a rover for verification, and on auxiliary equipment. ClamVision supports all of these simultaneously:
- Barge GPS — primary vessel position and heading
- Boom-tip or bucket GPS — direct positioning of the digging point for the highest possible accuracy
- Auxiliary GPS — secondary vessels, survey boats, or pipeline lay equipment
- Rover GPS — handheld or pole-mounted verification point
- NTRIP RTK corrections — ClamVision connects directly to any NTRIP caster to deliver centimeter-level RTK corrections to connected receivers without additional software
Positioning accuracy and calibration
Raw GPS position of the antenna is only the starting point. ClamVision applies a full sensor offset model to compute the true position of the bucket or cutter head:
- Lever-arm offsets from antenna to machine reference point
- Boom geometry and cable counter data to compute tip position
- Excavator stick and bucket angle to compute dig point
- Inclinometer corrections for barge pitch and roll
- Heading alignment to project coordinate system
The result is a bucket position that is accurate in all three dimensions — not just latitude/longitude but also depth — continuously updated as the machine moves.
Coordinate systems supported
ClamVision works in the coordinate system your project requires:
- UTM zones (any hemisphere)
- Local grid with user-defined origin and rotation
- Latitude/Longitude (WGS84 and other datums)
- Custom projections via GDAL/PROJ