Surveying Glossary — Letter C

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cadastral survey

A cadastral survey is a detailed measurement and mapping of land parcels to establish property boundaries and ownership rights for legal and administrative purposes.

Cadastre

A comprehensive public record system that documents the boundaries, ownership, and value of individual land parcels for taxation and legal purposes.

calibration

The process of adjusting and verifying measuring instruments to ensure accuracy and consistency with established standards.

canopy filtering

A surveying technique that removes tree canopy interference from aerial survey data to improve ground feature visibility and accuracy.

Carrying Case

A protective container designed to safely transport and store surveying instruments and equipment.

Cartography

The art and science of creating maps to represent geographical features and spatial data.

Central Meridian

A reference meridian used as the central line of longitude for map projections to minimize distortion.

check point

A marked location of known position used in surveying to verify accuracy and control of measurements.

chi square test

A statistical test used to determine if there is a significant association between categorical variables.

chm

chm yə məsafənin ölçülməsi və qeyd edilməsi üsulu.

Closure Error

The discrepancy between the starting point and ending point of a surveyed traverse when they should theoretically coincide.

CloudCompare

CloudCompare is an open-source 3D point cloud and mesh processing software widely used in surveying and geospatial applications.

cogo

Coordinate geometry is the mathematical method of calculating positions and distances using numerical coordinates in surveying and mapping.

Collimation Error

The systematic error that occurs when the line of sight of a surveying instrument is not parallel to its axis of rotation, causing measurements to deviate from true values.

column survey

A surveying method that measures vertical columns or structural elements to verify their plumb, alignment, and dimensional accuracy during construction or inspection.

confidence interval

A range of values that likely contains an unknown population parameter with a specified degree of certainty.

Control Network

A system of precisely located survey points that serve as reference marks for all subsequent surveying and mapping operations.

Coordinate System

A mathematical framework that uses numerical values to define the precise location of points in space relative to reference axes or datums.

Corner

A point where two or more boundary lines or property edges meet and intersect.

CORS Network

A continuously operating reference station network that provides real-time or near real-time positioning corrections for surveying and navigation applications.

cross section

A vertical slice through the Earth's surface showing the elevation profile and subsurface features along a surveyed line.

Cut Fill

The process of removing soil from high areas and depositing it in low areas to achieve a desired ground level.

Cyclone

A cyclone is a large-scale atmospheric system characterized by rapidly rotating winds around a central area of low pressure.