The ability of a navigation or positioning system to define an exact location in relation to a coordinate system.



Related Terms

DGPS

INERTIAL ALIGNMENT

The process of orienting the measuring axes of the inertial components of inertial navigation equipment with respect to the coordinate system in which the equipment is to be used. inertia

NAVY NAVIGATION SATELLITE SYSTEM

A satellite navigation system of the United States conceived and developed by the Applied Physics Laboratory of the Johns Hopkins University. It is an all-weather, worldwide, and passive system which provides two-dimensional positioning from low-altitude satellites in near-polar orbits. The Transit launch program ended in 1988, and the system is scheduled for termination in 1996, replaced by GPS.

GPS

Global (satellite) positioning system

CORIOLIS CORRECTION

  1. A correction applied to an assumed position, celestial line of position, celestial fix, or to a computed or observed altitude to allow for Coriolis acceleration. 2. In inertial navigation equipment, an acceleration correction which must be applied to measurements of acceleration with respect to a coordinate system in translation to compensate for the effect of any angular motion of the coordinate system with respect to inertial space.

GPS

Global Positioning System (see GNSS)

WORLDWIDE SYSTEM

A term used to describe a navigation system providing positioning capability wherever the observer may be located.

INTEGRATED NAVIGATION SYSTEM

A navigation system which comprises two or more positioning systems combined in such manner as to achieve performance better than each constituent system.

D.G.P.S.

Differential global positioning system that refines a ship stations G.P.S. positions by referring those to simultaneously found readings obtained by a shore system with known position. Error in East and West can be calculated from the later and assumed to equally apply to the ship station.

GLONASS

Global Navigation Satellite System (see GNSS)

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