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Eng ID Term Definition
4361
relief displacement
DISPLACEMENT of IMAGES radially inward or outward with respect to the PHOTOGRAPH NADIR, according as the ground objects are, respec­tively,... more
DISPLACEMENT of IMAGES radially inward or outward with respect to the PHOTOGRAPH NADIR, according as the ground objects are, respec­tively, below or above the ELEVATION of the GROUND NADIR.
4362
relief map
See MAP.
4363
relief model
A scaled representation in three dimen­sions of a section of the CRUST of the EARTH, or of another HEAVENLY BODY. A relief model primarily ... more
A scaled representation in three dimen­sions of a section of the CRUST of the EARTH, or of another HEAVENLY BODY. A relief model primarily desi­gned to display features on the surface of the EARTH is sometimes known as a topographic model.
4364
remanence
See MAGNETIC RETENTIVITY.
4365
remote sensing
The measurement or acquisition of information of some property of an object or phenome­non by a recording device that is not in physical or... more
The measurement or acquisition of information of some property of an object or phenome­non by a recording device that is not in physical or infinite contact with the object or phenomenon under study. Sometimes restricted to the practice of data collection in the wavelengths from ultraviolet to radio regions.
4366
remotely operated vehicle (ROV)
An unmanned submersi­ble craft which can be used either for observation purposes or to perform hydrographic surveys, or for working purpose... more
An unmanned submersi­ble craft which can be used either for observation purposes or to perform hydrographic surveys, or for working purposes. Also called "remotely controlled vehicle (RCV)".
4367
repeatability
See REPEATABLE ACCURACY.
4368
repeatable accuracy
In a navigation system, the measu­re of the accuracy with which the system permits the user to return to a position as defined only in term... more
In a navigation system, the measu­re of the accuracy with which the system permits the user to return to a position as defined only in terms of the coordinates peculiar to that system. For exam­ple, the distance specified for the repeatable accura­cy of the system such as LORAN‑C is the distance bet­ween two LORAN‑C positions established using the same stations and time‑difference readings at diffe­rent times. The correlation between the geographical coordi­nates and the system coordinates may or may not be known.
4369
repeater
A device for repeating at a distance the indications of an instrument or device. See COMPASS REPEATER, GYRO REPEATER, STEERING REPEATER.
4370
repeating instrument
See THEODOLITE: REPEATING.
4371
repeating theodolite
See THEODOLITE.
4372
repetition method of observation
A method of obser­ving horizontal angles by which the OBSERVATIONS of each angle are completed separate­ly. See THEODOLITE: REPEATING.
4373
repetition rate
The rate at which recurrent SIGNALS are transmitted. Also called recurrence rate.
4374
reported danger
An object dangerous to NAVIGATION which is shown on a CHART but the existence of which has not been confirmed. Sometimes called VIGIA.
4375
representative fraction
See SCALE: NATURAL.
4376
reprint (of a chart)
(U.S. terminology). An issue of a CHART the supply of which is approaching exhaustion. The reprint is an exact duplicate of the current issu... more
(U.S. terminology). An issue of a CHART the supply of which is approaching exhaustion. The reprint is an exact duplicate of the current issue with no changes in printing or publication data.
4377
reproducible
An original drawing, photographic POSI­TIVE or NEGATIVE on stable base material to be used in the process of REPRODUCTION.
4378
reproduction
In CARTOG­RAPHY, the processes involved in printing copies from an original drawing. The principal processes are PHOTOGRAPHY, LITHOGRAPHY (... more
In CARTOG­RAPHY, the processes involved in printing copies from an original drawing. The principal processes are PHOTOGRAPHY, LITHOGRAPHY (or ENGRA­VING), and printing. A printed copy of an original drawing, made by any of the processes of reproduc­tion.
4379
repromat
Reproduction material, generally in the form of positive or negative copies on film or glass for each colour plate, from which a map or char... more
Reproduction material, generally in the form of positive or negative copies on film or glass for each colour plate, from which a map or chart may be reproduced without redrafting.
4380
Rescue Co-ordination Centre (RCC)
A unit responsible for promoting efficient organization of search and rescue services and for coordinating the conduct of search and rescue ... more
A unit responsible for promoting efficient organization of search and rescue services and for coordinating the conduct of search and rescue operations within a search and rescue region. Also called Maritime Rescue Co-ordination Centre (MRCC) and Joint Rescue Co-ordination Centre (JRCC).