Accuracy: Difference between revisions

From International Dictionary of Marine Aids to Navigation
Jump to navigation Jump to search
m (Dictionary clean-up: identifier → urn:mrn:iala:dic:15-0-0001; section 10.1 → 15.0 General Terms (Chapter 15 Radionavigation Services))
m (Dictionary update (revision category): updates of 2026 recorded under IALA Dictionary 2023 Revision (2026 Revision category merged))
 
(2 intermediate revisions by the same user not shown)
Line 1: Line 1:


'''urn:mrn:iala:dic:15-0-0001'''
'''urn:mrn:iala:dic:4-1-1070'''


The degree of conformance between the estimated or measured parameter of a craft at a given time and its true parameter at that time. (Parameters in this context may be position coordinates, velocity, time, angle, etc.)
The degree of conformity between the measured parameter at a given time and its true parameter at that time. The term parameter includes: position, coordinates, velocity, time, angle, etc.
 
(Originate: NAVGUIDE 2023)


– Absolute accuracy (Geodetic or Geographic accuracy). The accuracy of a position estimate with respect to the geographic or geodetic coordinates of the Earth.
– Absolute accuracy (Geodetic or Geographic accuracy). The accuracy of a position estimate with respect to the geographic or geodetic coordinates of the Earth.
Line 8: Line 10:
– Geodetic or Geographic accuracy. See absolute accuracy.
– Geodetic or Geographic accuracy. See absolute accuracy.


– Predictable accuracy. The accuracy of the estimated position solution with respect to the charted solution.
– Predictable accuracy. The accuracy with which a position can be defined when the predicted errors have been taken into account. It therefore depends on the state of knowledge of the error sources. (Originate: NAVGUIDE 2023)


– Relative accuracy. The accuracy with which a user can determine position relative to that of another user of the same navigation system at the same time.
– Relative accuracy. The accuracy with which a user can determine position relative to that of another user of the same navigation system at the same time.
Line 18: Line 20:


{{languages|Accuracy}}
{{languages|Accuracy}}
[[Category:15.0 General Terms]]
[[Category:4.1 General Terms]]
[[Category:Alphabetical Index]]
[[Category:Alphabetical Index]]
[[Category:IALA Dictionary 2009 Edition]]
[[Category:IALA Dictionary 2009 Edition]]
[[Category:IALA Dictionary 2023 Revision]]
[[Category:IALA Dictionary 2023 Revision]]

Latest revision as of 12:52, 17 September 2026

urn:mrn:iala:dic:4-1-1070

The degree of conformity between the measured parameter at a given time and its true parameter at that time. The term parameter includes: position, coordinates, velocity, time, angle, etc.

(Originate: NAVGUIDE 2023)

– Absolute accuracy (Geodetic or Geographic accuracy). The accuracy of a position estimate with respect to the geographic or geodetic coordinates of the Earth.

– Geodetic or Geographic accuracy. See absolute accuracy.

– Predictable accuracy. The accuracy with which a position can be defined when the predicted errors have been taken into account. It therefore depends on the state of knowledge of the error sources. (Originate: NAVGUIDE 2023)

– Relative accuracy. The accuracy with which a user can determine position relative to that of another user of the same navigation system at the same time.

– Repeatable accuracy. The accuracy with which a user can return to a position whose coordinates have been measured at a previous time using uncorrelated measurements from the same navigation system.


Source: Nick Ward, Vicechair, IALA e-Nav Committee, March 2009