Surveying Glossary — Letter C

Βασικοί όροι στη δημοσιογραφική τοπογραφία και τη γεωχωρική τεχνολογία.

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Cadastral Survey

A systematic survey and mapping of land parcels to establish property boundaries and ownership records for legal and taxation purposes.

Cadastre

A comprehensive public register of real property and land parcels that records ownership, boundaries, and values for taxation and administration purposes.

canopy filtering

A surveying technique that removes vegetation data from LiDAR point clouds to reveal ground surface elevation beneath forest canopies.

carrying case

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

CDE - Common Data Environment

A centralized digital platform that manages and shares all project data, documentation, and information among surveying and construction team members in real-time.

central meridian

The meridian of longitude that serves as the origin or reference line for a map projection system.

Chart Datum

A reference water level used as the baseline for depth measurements and hydrographic charting in maritime surveying.

Check Point

A surveying station of known or established position used to verify the accuracy of surveying measurements and calculations.

Chi Square Test

A statistical method used to determine if there is a significant association between categorical variables by comparing observed frequencies with expected frequencies.

chm

Chm is a compressed help file format used primarily in Microsoft Windows applications for storing documentation and help content.

Clash Detection Survey

A specialized surveying method that identifies spatial conflicts between building elements, infrastructure components, or design features before construction to prevent costly rework and project delays.

closure error

The discrepancy between the starting and ending points of a surveyed traverse or polygon due to measurement inaccuracies.

CloudCompare

CloudCompare is an open-source software application designed for processing, analyzing, and visualizing three-dimensional point clouds and mesh data acquired through laser scanning and photogrammetry techniques.

COGO

COGO är en datoriserad metod för att beräkna och hantera geografiska koordinater och mätdata inom lantmäteri och markägande.

collimation error

A systematic error in surveying instruments where the line of sight is not parallel to the instrument's reference axis, causing measurement inaccuracies.

column survey

A systematic method of measuring and documenting the vertical dimensions, structural integrity, and spatial relationships of columns in buildings and structures.

confidence interval

A range of values that likely contains the true population parameter based on sample data and a specified level of confidence.

Contour Lines

Lines on a map connecting points of equal elevation above a reference datum.

control network

A system of surveying points with established coordinates that serves as the reference framework for all subsequent surveying and mapping activities.

Coordinate System

A system that uses numerical values to uniquely identify positions of points in space relative to a fixed reference frame.

corner

A point where two or more boundary lines meet or intersect, marking a change in direction of a property line or survey boundary.

Corridor Mapping

The systematic process of surveying and documenting linear geographic features and pathways across landscapes.

CORS Network

A system of continuously operating reference stations that provide real-time positioning and navigation data for surveying and mapping applications.

cross section

A vertical slice through the earth showing elevation changes and subsurface features along a surveyed line.

Cut Fill

The process of excavating material (cut) from elevated areas and depositing it (fill) in lower areas to achieve desired ground elevation.

cyclone

A large-scale atmospheric system characterized by rotating winds around a low-pressure center, capable of producing severe weather and significant damage.