Glossary of Mapping, Charting, and Geodetic Terms |
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Page 9
... surface . angle of inclination - An angle of elevation or angle of depression . angle of reflection- ( optics ) As measured from the normal , the angle at which a reflected ray of light leaves a surface . angle of refraction - The angle ...
... surface . angle of inclination - An angle of elevation or angle of depression . angle of reflection- ( optics ) As measured from the normal , the angle at which a reflected ray of light leaves a surface . angle of refraction - The angle ...
Page 15
... surface height ( RI / SH ) overlay , and a radar prediction data table ( RPDT ) . area survey - A survey of areas large enough to require loops of control . area target - A target consisting of an area rather than a single point ...
... surface height ( RI / SH ) overlay , and a radar prediction data table ( RPDT ) . area survey - A survey of areas large enough to require loops of control . area target - A target consisting of an area rather than a single point ...
Page 16
... surfaces depart from a true spherical shape . assault - landing model - A special form of assault model designed ... surface approach . associated Legendre function - A solution of the Legendre equation , which is a special case of ...
... surfaces depart from a true spherical shape . assault - landing model - A special form of assault model designed ... surface approach . associated Legendre function - A solution of the Legendre equation , which is a special case of ...
Page 18
... surface of the earth , or of the geoid , in which the local direction of gravity is used as a reference . Also called geographic coordinates ; gravimetric coordinates . 2. The coordinates of an astronomical body referred to a given ...
... surface of the earth , or of the geoid , in which the local direction of gravity is used as a reference . Also called geographic coordinates ; gravimetric coordinates . 2. The coordinates of an astronomical body referred to a given ...
Page 30
... surface ( usually the geoid ) and then reduces the gravity from the terrain to the reference surface . boundary line - A line of demarcation between contiguous political or geo- graphical entities . The word " boundary " is sometimes ...
... surface ( usually the geoid ) and then reduces the gravity from the terrain to the reference surface . boundary line - A line of demarcation between contiguous political or geo- graphical entities . The word " boundary " is sometimes ...
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Common terms and phrases
adjustment aerial photographs altitude angle angular astronomical axis azimuth base bench mark called camera celestial body celestial equator celestial meridian celestial sphere chart-A chart circle computed conformal map contour coordinates correction curve datum determined difference direction distance earth ecliptic elevation ellipsoid fictitious geodesy geodetic geographic geoid graphic gravity Greenwich grid ground high water horizontal hour angle instrument intersection latitude length lens leveling rod longitude low water lunitidal interval magnetic map or chart map projection map projection-A map-A map mean measured Mercator method moon navigation negative object oblique observed optical orbit parallax parallel pendulum perpendicular photogrammetry plane polar pole position radar radial reference reference ellipsoid refraction rhumb line rotation satellite scale solar spheroid spirit level station stereoscopic surface survey tangent tape target telescope templet term terrain terrestrial theodolite tide tion topographic transverse traverse triangulation usually vernal equinox vertical
Popular passages
Page 160 - Every particle of matter in the universe attracts every other particle with a force that varies directly as the product of their masses, and inversely as the square of the distance between them.
Page 160 - Every body continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed upon it.
Page 48 - Every particle of matter, in the universe, attracts every other particle with a force, which is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
Page 127 - The squares of the periods of revolution of any two planets are proportional to the cubes of their mean distances from the sun.
Page 147 - Map Projection — A systematic drawing of lines on a plane surface to represent the parallels of latitude and the meridians of longitude of the earth or a section of the earth. A map projection may be established by analytical computation or may be constructed geometrically...
Page 152 - Local mean time at the Greenwich meridian; the arc of the celestial equator, or the angle at the celestial pole, between the lower branch of the Greenwich celestial meridian and the hour circle of the...
Page 96 - ... geodetic meridian. A line connecting points of equal geodetic longitude. Also called geographic meridian. See astronomical meridian. geodetic parallel. A line connecting points of equal geodetic latitude. Also called geographic parallel. See astronomical parallel. geodetic position. A position of a point on the surface of the earth expressed in terms of geodetic latitude and geodetic longitude. A geodetic position implies an adopted geodetic datum, which must be stated for a complete record of...
Page 118 - Their wave lengths are longer than those of visible light and shorter than those of radio waves.
Page 123 - A radial from the isocenter. isostasy — A condition of approximate equilibrium in the outer part of the earth, such that the gravitational effect of masses extending above the surface of the geoid in continental areas is approximately counterbalanced by a deficiency of density in the material beneath those masses, while...
Page 228 - ... revolution from the fact that it can be formed by revolving an ellipse about one of its axes. If the shorter axis is used as the axis of revolution, an oblate spheroid results, and if the longer axis is used, a prolate spheroid results. The earth is approximately an oblate spheroid.