Surveying Glossary — Letter V

Nyckelbegrepp inom professionell mätning och geospatial teknik.

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vdop

Vdop ay ang vertical dilution of precision na sukatan ng accuracy ng vertical positioning sa GPS surveying.

Vector Data

Digital geographic information represented as discrete points, lines, and polygons with associated attributes.

vertical angle

An angle measured upward or downward from the horizontal plane to determine elevation differences in surveying operations.

vertical circle reading

The measurement of vertical angles using the vertical circle of a theodolite or transit instrument to determine elevation differences and heights.

Vertical Datum

A reference surface used to measure heights and elevations of points on the Earth's surface.

vertical datum shift

A change in the reference surface used to measure vertical positions and elevations in surveying and mapping.

voxel

A voxel is a three-dimensional unit of volume in digital space, analogous to a pixel in two dimensions, used to represent spatial data in surveying and geospatial applications.

Voxel Grid Downsampling

A technique for reducing the resolution of 3D point cloud data by grouping points into larger cubic voxels and retaining representative samples.

vrs

Vrs estas sistemo de pozicio-determinado uzanta satelitojn por preciza ĝeografia lokado.