A DOD Glossary of Mapping, Charting and Geodetic Terms1967 - Cartography - 243 pages |
From inside the book
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Page 6
... longitude along any given parallel are of equal length . The parallels are spaced to re- tain the condition of equal area . On two se- lected parallels , the arcs of longitude are represented in their true length . Between the selected ...
... longitude along any given parallel are of equal length . The parallels are spaced to re- tain the condition of equal area . On two se- lected parallels , the arcs of longitude are represented in their true length . Between the selected ...
Page 14
... longitude by time sight . assumed longitude - The longitude at which an observer is assumed to be located for an ob- servation or computation , as the longitude of an assumed position or the longitude used for determining the latitude ...
... longitude by time sight . assumed longitude - The longitude at which an observer is assumed to be located for an ob- servation or computation , as the longitude of an assumed position or the longitude used for determining the latitude ...
Page 16
... longitude is the longitude which results directly from observations on celestial bodies , uncorrected for deflection of the vertical . astronomical meridian - A line on the surface of the earth having the same astronomical longitude at ...
... longitude is the longitude which results directly from observations on celestial bodies , uncorrected for deflection of the vertical . astronomical meridian - A line on the surface of the earth having the same astronomical longitude at ...
Page 17
... longitude . astronomical refraction - The apparent dis- placement of an object that results from light rays from a source outside the atmos- phere being bent in passing through the at- mosphere . This results in all objects appear- ing ...
... longitude . astronomical refraction - The apparent dis- placement of an object that results from light rays from a source outside the atmos- phere being bent in passing through the at- mosphere . This results in all objects appear- ing ...
Page 21
... longitude or where the geodetic latitudes of both points are 0 ° . See also azimuth , definition 1 . back bearing - 1 . A bearing along the reverse direction of a line . Thus , if bearing of line A B is N 58 ° 36'W , the reverse bearing ...
... longitude or where the geodetic latitudes of both points are 0 ° . See also azimuth , definition 1 . back bearing - 1 . A bearing along the reverse direction of a line . Thus , if bearing of line A B is N 58 ° 36'W , the reverse bearing ...
Common terms and phrases
adjustment aerial photographs altitude angle angular astronomical axis azimuth base called camera celestial body celestial equator celestial sphere chart-A chart circle computed conformal map contour coordinates corner correction curve datum determined difference direction distance earth ecliptic elevation ellipsoid fictitious focal geodesy geodetic geographic geoid graph graphic gravity grid ground high water horizontal hour angle instrument intersection latitude length lens longitude low water magnetic map or chart map projection map-A map mean measured ment Mercator meridian method moon negative object oblique observed optical orbit parallax parallel pendulum perpendicular photogrammetric plane plate polar pole position prime vertical radar radial reference refraction rhumb line rotation satellite scale sextant solar spheroid spirit level station stereoplotter stereoscopic strip surface survey survey-A tangent tape target telescope templet term theodolite tidal tide tion topographic transit transverse traverse triangulation USPLS usually vernal equinox vertical zenith
Popular passages
Page 42 - 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 107 - The squares of the periods of revolution of any two planets are proportional to the cubes of their mean distances from the sun.
Page 127 - The average height of the surface of a river at any point for all stages of the tide over a 19-year period usually determined from hourly height readings.
Page 132 - M) — A tendency to cause rotation about a point or axis, as of a control surface about its hinge or of an airplane about its center of gravity; the measure of this tendency, equal to the product of the force and the perpendicular distance between the point of axis of rotation and the line of action of the force. Moment of Inertia...
Page 82 - ... 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 173 - A basic subdivision of an antenna which in itself is capable of radiating or receiving radiofrequency energy. radiation. 1. The process by which electromagnetic energy is propagated through free space by virtue of joint undulatory variations in the electric and magnetic fields in space.
Page 101 - Their wave lengths are longer than those of visible light and shorter than those of radio waves.
Page 129 - 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 133 - ... (photogrammetry) An assembly of overlapping aerial photographs whose edges usually have been torn, or cut, and matched to form a continuous photographic representation of a portion of the earth's surface.
Page 123 - See culture. manuscript— The original drawing of a map as compiled or constructed from various data, such as ground surveys and photographs. See also multi-use manuscript (MUM).