Surveying Glossary — Letter C

A cadastral survey is a precise legal boundary survey that documents property ownership and land divisions for taxation, property rights, and government records.

A comprehensive public record system that documents the extent, value, and ownership of land parcels within a defined territory, essential for property management and urban planning.

A mechanical stabilization system that suspends and isolates a survey camera or sensor from vibration and movement, maintaining precise orientation and level during aerial or terrestrial surveying operations.

Cartography is the science and art of creating maps by collecting, analyzing, and representing geographical data acquired through surveying measurements and spatial information.

A reference longitude line running north-south through the center of a map projection zone, used as the origin for eastings in coordinate systems.

CHC Survey Master is a comprehensive surveying software platform designed for data processing, coordinate transformation, and project management in professional land surveying operations.

A verification surveying method that establishes and validates reference points at predetermined locations to ensure accuracy and consistency throughout a surveying project.

A statistical method used in surveying to test the goodness-of-fit between observed survey measurements and expected theoretical distributions.

A Canopy Height Model (CHM) is a digital representation of the height of vegetation, vegetation objects, and buildings above ground, derived from airborne LiDAR or photogrammetric data.

Closure error is the discrepancy between the starting and ending points of a surveyed traverse or polygon, representing the accumulated measurement inaccuracies in surveying operations.

CloudCompare is a free, open-source 3D point cloud processing and analysis software widely used in surveying, geomatics, and civil engineering for visualizing, comparing, and manipulating point cloud data.

COGO (Coordinate Geometry) is a surveying methodology that uses mathematical calculations and coordinate systems to determine precise locations, distances, and angles between surveyed points.

Collimation error is a systematic instrumental error in surveying instruments caused by misalignment of the instrument's optical axis with its mechanical axis, resulting in angular measurement inaccuracies.

A specialized surveying operation that establishes the precise horizontal and vertical positions of structural columns for buildings, bridges, and industrial facilities to ensure accurate construction placement and alignment.

A range of values derived from survey measurements that statistically contains the true value with a specified probability, typically expressed as a percentage such as 95% or 99%.

A construction layout survey is the precise positioning and marking of building elements, infrastructure components, and site features on the ground according to design plans and engineering specifications.

Construction stakeout is the process of transferring design coordinates and elevations from surveying plans to the ground using precise instruments to establish control points for building and infrastructure projects.

Contour lines are continuous curves on a map that connect points of equal elevation, representing the three-dimensional terrain on a two-dimensional surface.

A system of precisely established survey points with known horizontal and vertical coordinates that serves as a reference framework for all subsequent surveying and mapping operations.

A mathematical framework that uses numerical values to precisely locate and reference points on the Earth's surface for surveying and mapping purposes.

Corridor mapping is a surveying technique that captures detailed spatial data along a linear route or pathway, typically for infrastructure projects such as roads, railways, pipelines, and utilities.

A continuously operating reference station network that provides real-time or post-processed differential GPS/GNSS corrections for high-precision surveying and positioning applications.

A cross section survey is a surveying method that measures and records vertical elevations along a predetermined line perpendicular to a baseline to create a profile of ground features.

Cut and fill calculation is the process of computing the volume of earth material to be excavated (cut) and deposited (fill) during grading operations to achieve design elevations.