MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY

Introduced: September 1968

Classification Context

Section:: PHYSICS
Class:: MEASURING; TESTING
Subclass:: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY

Description

G01C encompasses instruments and methods for determining spatial relationships and positioning information essential to surveying, navigation, and mapping applications. This subclass covers distance measurement technologies (ranging, leveling), bearing and direction determination (compasses, gyroscopes), navigation systems (inertial, satellite-based), and image-based positioning techniques (photogrammetry, videogrammetry). The classification includes both traditional surveying equipment and modern electronic/digital systems for geolocation, route guidance, and spatial data acquisition across terrestrial, marine, and aerial domains.

Scope Notes

Glossary: Navigation means determining the position and course of land vehicles, ships, aircraft, and space vehicles Propagation effects propagation effect are relevant if the outcome of a measurement depends on the actual value of a physical quantity characterising the propagation of the wave, i.e. its wavelength, frequency, velocity, or phase. The mere presence or direction of a wave are not considered a propagation effect or to contribute to a propagation effect. To put it in another way, propagation effects are irrelevant, if the radiation may be looked upon as a beam of radiation whose wave nature can be ignored. Examples of measurements where propagation effects are relevant include e.g. measurements of propagation time, phase difference, phase delay, measurements using the Doppler effect, or interference. | Limiting references: Measuring liquid level Traffic control systems

Related Keywords

measuring course or position of AIRCRAFTmeasuring ALTITUDEmeasuring BEARING(S)measuring for DEAD-RECKONING of position opticallyDIRECTION findingGEODESYmeasuring GRADIENT of land slopesGROUND(S) surveyingHOMING systemsdetermining LATITUDESmeasuring LEEWAYdetermining LONGITUDESdetermining MERIDIANSdetermining PERPENDICULARSPLOTTING in surveyingmeasuring POSITIONQUADRANTS for surveying or navigatingSHADOW bars for determining directionmeasuring course or position of SHIP(S)SIGHT(S) on surveying or navigational instrumentsSQUARESSTABILISATION of line of sight in surveyingSUPPORTS for surveying or navigational instrumentsTACHYMETERS [for surveying]detecting TRANSIT of celestial bodiesTRIANGULATIONTRIBRACHSdetermining ZENITH

14 direct subcodes

Child Classifications

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G01C 1/00 Measuring angles
G01C 11/00 Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
G01C 13/00 Surveying specially adapted to open water, e.g. sea, lake, river or canal
G01C 15/00 Surveying instruments or accessories not provided for in groups
G01C 17/00 Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
G01C 19/00 Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
G01C 21/00 Navigation; Navigational instruments not provided for in groups
G01C 22/00 Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers or using pedometers
G01C 23/00 Combined instruments indicating more than one navigational value, e.g. for aircraft; Combined measuring devices for measuring two or more variables of movement, e.g. distance, speed or acceleration
G01C 25/00 Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
G01C 3/00 Measuring distances in line of sight; Optical rangefinders
G01C 5/00 Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
G01C 7/00 Tracing profiles
G01C 9/00 Measuring inclination, e.g. by clinometers, by levels