GNSS corridor surveys: controlling a long, changing work area
Road, utility and linear-infrastructure work can cross changing reception and reference conditions.
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174 practical articles on satellite positioning, RTK corrections, survey procedures and reliable geospatial data.
133–144 of 174 articles
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GNSS for agricultural mapping and field reference points
Agricultural mapping benefits from consistent references across boundaries, imagery and field observations.
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Ground control points vs checkpoints for drone mapping
Control helps a model fit; independent checkpoints help evaluate the result.
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Topographic GNSS surveys: collecting more than isolated points
A useful terrain dataset needs consistent positioning, feature descriptions and appropriate coverage.
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A GNSS stakeout workflow from design to as-built check
Reliable stakeout begins with the design reference and ends with a recorded check of the placed point.
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AR stakeout: using a live view without losing coordinate discipline
A camera overlay can make point finding more intuitive, while the underlying survey still depends on positioning quality.
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Laser GNSS: measuring points that are difficult to approach
A laser-capable GNSS workflow combines receiver positioning with another measurement, so both parts need validation.
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IMU tilt compensation: benefits and verification
A tilt-capable receiver estimates the relationship between the antenna and pole tip; the setup still needs checking.
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Grid vs ground distances: avoiding a layout mismatch
A distance on a projected coordinate grid is not always the same as a measured ground distance.
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Reference frames and coordinate epochs: why dates matter
A precise coordinate may need both a frame realization and an epoch.
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Local site calibration: connecting GNSS to project coordinates
A local transformation should be built from trustworthy control and tested on independent points.
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Ellipsoid, geoid and orthometric height: keeping elevations consistent
The height computed from GNSS is not automatically the elevation required by an engineering project.
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