absolute altimeter


absolute altimeter
noun
: an aircraft altimeter that determines distance to the earth by radio measuring the time needed for an emitted wave to reach the earth and reflect back to the aircraft

* * *

absolute altimeter,
an altimeter measuring altitude by the time required for a radio wave to echo from the surface immediately below. It is absolute in contrast to the measurement by barometric pressure, which is subject to atmospheric conditions.

Useful english dictionary. 2012.

Look at other dictionaries:

  • absolute altimeter — An instrument intended to give acceptably accurate, direct indications of absolute altitude (i.e., the vertical distance of the aircraft from the surface of the earth). A radio or a radar altimeter indicates absolute altitude roughly because of… …   Aviation dictionary

  • absolute altimeter — absoliutusis aukščiamatis statusas T sritis Gynyba apibrėžtis Prietaisas, kuriuo vertikalusis nuotolis iki paviršiaus (žemės, vandens ir t.t.) matuojamas naudojantis radijo, radiolokatoriaus, garso, lazerio ar erdvinio matavimo technologija.… …   NATO terminų aiškinamasis žodynas

  • absolute altimeter — A type of altimeter which measures vertical distance to the surface below, using radio, radar, sonic, laser, or capacitive technology …   Military dictionary

  • absolute altimeter — noun A type of altimeter which measures vertical distance to the surface below, using radio, radar, sonic, laser, or capacitive technology …   Wiktionary

  • absolute altitude — The vertical distance of an object above the surface of the earth. It can be measured with the help of an absolute, radio, radar, or laser altimeter. See absolute altimeter …   Aviation dictionary

  • absolute altitude — noun : the vertical distance between an aircraft and the surface over which it is flying * * * Aeron. the vertical distance between a flying aircraft, rocket, etc., and the point on the earth s surface directly below it, as measured by an… …   Useful english dictionary

  • absolute altitude — Aeron. the vertical distance between a flying aircraft, rocket, etc., and the point on the earth s surface directly below it, as measured by an electronic altimeter (absolute altimeter). [1930 35] * * * …   Universalium

  • altimeter — noun an apparatus for measuring altitude See Also: altimetric, altimetry, absolute altimeter …   Wiktionary

  • Altimeter — Ein Altimeter (von lat. altus: hoch) oder Höhenmesser ist ein Gerät, mit dem die Höhe eines Objekts über einer definierten Ebene oder Referenzfläche gemessen wird. Die Höhenmessung kann barometrisch, mit Schall, mit Mikrowellen (Radar) oder mit… …   Deutsch Wikipedia

  • altimeter — /al tim i teuhr, al teuh mee teuhr/, n. 1. a sensitive aneroid barometer that is graduated and calibrated, used chiefly in aircraft for finding distance above sea level, terrain, or some other reference point by a comparison of air pressures. 2.… …   Universalium