et

lähimarker

1 substantive

Terminological databases

Lennunduse terminibaas

ID 735031 Last modified 03.05.2024
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Domain air trafficradio navigation systems
lähimarker
IM
inner marker
inner marker beacon
IM
внутренний маркерный радиомаяк
  • a marker beacon used in conjunction with an ILS (instrument landing system) and located between the middle marker and the threshold of the runway where an ILS approach is being made
    Good to know
    • It is usually located at a distance where aircraft height would be 100 ft above the touchdown point elevation on a Cat II approach. It transmits a 75 MHz fan-shaped radiation pattern modulated at 3000 Hz and keyed at six dots per second. It indicates to the pilot, both aurally and visually, that he or she is at the designated decision height (DH), normally 100 ft (30 m) above the touchdown zone elevation, on the ILS CAT II approach. It also marks progress during a CAT III approach.
Good to know
  • Valdkond ICAO lisade põhjal loodud klassifikaatori järgi: Lennundusside (telekommunikatsioon)
Related
lähimarker
Usage examples
  • Markermajakad (marker beacon) - mille abil määratakse ettenähtud kauguspunktid lähenemistrajektooril, näiteks kaugmarker, keskmarker ja lähimarker.
IM abbreviation
inner marker
Usage examples
  • The inner marker, when installed, shall be located so as to indicate in low visibility conditions the imminence of arrival at the runway threshold.
inner marker beacon
Usage examples
  • Some ILS approaches have an inner marker beacon that transmits a signal modulated with 3000 Hz in a series of dots only. It is placed at the land-or-go-around decision point of the approach close to the runway threshold.
IM abbreviation
внутренний маркерный радиомаяк

Metroloogia terminibaas

ID 1125294 Last modified 18.11.2024
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Domain metrologymeasuring instrumentsmeasuring procedures
inner marker preferred
IM
  • marker, mis asub maandumisraja alguses (lävel)
  • marker that locate at the beginning (threshold) of the runway
lähimarker
Usage examples
  • Lähimarker on teatud tüüpi VHF-raadiomajakas, mille abil mõõdetakse ettenähtud kauguspunkt õhusõiduki lähenemistrajektooril maandumisraja suhtes ja mis on kasutusel tavaliselt koos instrumentaalmaandumissüsteemiga.
inner marker preferred
IM abbreviation

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