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observed altitude

См. также в других словарях:

  • altitude difference — The difference between computed and observed altitudes, or between precomputed and sextant altitude. Also called altitude intercept …   Aviation dictionary

  • true altitude — i. The actual height above sea level. The calibrated altitude corrected for air temperature. See altitude. ii. The actual altitude of a celestial body above the celestial horizon. The observed altitude must be corrected for several variables… …   Aviation dictionary

  • Minimum safety altitude — Altitude specified at the flight planning stage as the minimum altitude that can be descended to in order to maintain safe terrain separation. Generally, for VFR flight, a safe margin would be; Take a terrain elevation of 1,250 ft above mean sea… …   Wikipedia

  • Meridian altitude — is an astronomical navigation method of calculating an observer s latitude. Contents 1 Principle 2 Methodology 3 See also 4 References …   Wikipedia

  • High altitude nuclear explosion — High altitude nuclear explosions have historically been nuclear explosions which take place above altitudes of 50 km, still inside the Earth s atmosphere. Such explosions have been tests of nuclear weapons, used to determine the effects of the… …   Wikipedia

  • intercept altitude — As used in astronavigation, it is the difference between the minutes of an arc, between computed and observed altitudes, or between precomputed and sextant altitudes. It is labeled T (toward) or A (away), as the observed or sextant altitude is… …   Aviation dictionary

  • calculated altitude — The celestial angle between a celestial body and the observer’s horizon calculated mathematically or observed from a given position on the earth at a given time …   Aviation dictionary

  • Intercept method — The Intercept Method , or Marcq St Hilaire method , as it is also rather inaccurately known, is an astronomical navigation method of calculating an observer s position on earth. It was originally called the azimuth intercept method because the… …   Wikipedia

  • sandwich fix — A fixing method that dispenses with the transfer of position lines, and so facilitates plotting, is a sandwich fix. The observed altitude of a body varies linearly with time, except near or during meridian passage time. Hence, if two sights are… …   Aviation dictionary

  • noon fix — A positional fix obtained from any celestial body (generally the sun) that is close to the observer’s zenith. Such a fix generally is obtained at a time when the observed altitude of a body is greatest, as it is then practical to plot the line of …   Aviation dictionary

  • Ho — • holmium • observed altitude …   Maritime acronyms and abbreviations

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