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altazimuth coordinate system
(Encyclopedia)altazimuth coordinate system ăltăzˈəməth [key] or horizon coordinate system, astronomical coordinate system in which the position of a body on the celestial sphere is described relative to an obs...instrument-landing system
(Encyclopedia)CE5 Instrument-landing system (ILS), the most common instrument-landing approach system, uses two beams to guide an airplane. instrument-landing system (ILS), ground-based radio system designed to...horizon coordinate system
(Encyclopedia)horizon coordinate system: see altazimuth coordinate system. ...free enterprise system
(Encyclopedia)free enterprise system: see capitalism. ...Global Positioning System
(Encyclopedia)Global Positioning System: see navigation satellite. ...galactic coordinate system
(Encyclopedia)galactic coordinate system, astronomical coordinate system in which the principal axis is the galactic equator (the intersection of the plane of the Milky Way with the celestial sphere) and the refere...equatorial coordinate system
(Encyclopedia)CE5 Equatorial coordinate system equatorial coordinate system, the most commonly used astronomical coordinate system for indicating the positions of stars or other celestial objects on the celesti...autonomic nervous system
(Encyclopedia)autonomic nervous system: see nervous system. ...parasympathetic nervous system
(Encyclopedia)parasympathetic nervous system: see nervous system. ...life support system
(Encyclopedia)life support system: see artificial life support; Life Support for Human Spaceflight under space science. ...Browse by Subject
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