The function of the altimeter is to provide precise measurements of Apollo vehicle height above known positions on the lunar surface. A short duration light pulse from the laser is directed through a telescope in a narrow beam to the lunar surface. A portion of the light is reflected by the moon back to the altimeter where it is intercepted by a receiving telescope and relayed to a detector. The time from the moment when the light pulse leaves the laser until its return, which is measured with the aid of a quartz crystal controlled clock oscillator, is a measure for the altitude.


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    Titel :

    Laser altimeter for Apollo lunar orbit.


    Beteiligte:
    Woodward, J. H. (Autor:in) / Walters, E. B. (Autor:in)

    Kongress:

    NEREM 71; Northeast Electronics Research and Engineering Meeting ; 1971 ; Boston, MA


    Erscheinungsdatum :

    01.01.1971


    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch




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