Apparatus and associated methods relate to improving measurement of metrics of air data of an atmosphere outside an aircraft. Such measurements are improved by estimating a daylight portion of light received by an optical receiver (14) configured to receive a reflected portion of the projected beam backscattered by the atmosphere. Estimation of the daylight portion is performed using a daylight filter. The daylight filter receives the light received by the optical receiver (14) after it has been filtered by a vapor cell filter (22) and separates the light, as filtered, into a beam sampling portion and a complementary non-sampling portion. The non-beam sampling portion includes wavelengths immediately adjacent to the beam sampling portion. The non-beam sampling portion is used to estimate the daylight portion within the beam sampling portion, which also contains the reflected portion of the projected beam used for calculating the metrics of air data.


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    Title :

    TUNABLE VAPOR FILTER WITH BACKGROUND REJECTION FOR MEASURING AIR DATA OF AN ATMOSPHERE


    Additional title:

    ABSTIMMBARER DAMPFFILTER MIT HINTERGRUNDABWEISUNG ZUR MESSUNG VON LUFTDATEN EINER ATMOSPHÄRE
    FILTRE À VAPEUR RÉGLABLE AVEC REJET DE BRUIT DE FOND POUR MESURER LES DONNÉES DE L'AIR D'UNE ATMOSPHÈRE


    Contributors:

    Publication date :

    2025-01-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / G01P MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK , Messen der Linear- oder Winkelgeschwindigkeit, der Beschleunigung, der Verzögerung oder des Stoßes / G01S RADIO DIRECTION-FINDING , Funkpeilung



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