GPS GNSS Machine Control Overview
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Role of positioning
GNSS/GPS provides position and elevation information subject to the selected system, corrections, calibration and site conditions. The design surface or operator plan determines the target.
Platform considerations
Mounting height, rigidity, vibration, line of sight, cable routing, protection, service access and compatibility with the receiver/control system should be assessed.
No universal accuracy promise
Achievable grading performance depends on the complete system, calibration, machine response, site conditions, operator/control setup and project requirements.
Related topics
GPSGNSSRTKreceiver mount
GPS/GNSS and RTK integration workflow
The receiver platform is an integration point between the grading machine and the selected positioning/control system. Its job is to support equipment in a stable, serviceable position while respecting the geometry and operating environment of the machine.
Mounting geometry
Mast position, rigidity, vibration, receiver height, visibility and protection can affect practical operation. The mounting arrangement should be compatible with the selected control system.
RTK workflow
Where RTK GNSS is used, corrections may come from a suitable base or network service. Coordinate system, design surface, calibration and field checks must be managed by the chosen system and operator.
Integration
Power, cable routing, controllers, sensors, cameras and hydraulic-control interfaces should be considered as a system, with protection from vibration, soil, moisture and accidental damage.
Verification
GPS/GNSS is a measurement and guidance technology. Finished accuracy depends on the complete system, setup, corrections, calibration, machine response, site conditions and verification method; the platform alone should not be used to promise a particular accuracy.