A system for estimating a pointing error of an antenna (ANT) of a satellite, the satellite includes a payload (CU) comprising a multichannel transmitter or receiver comprising a multichannel antenna (ANT), one analogue processing chain per channel and a set of digital integrated circuits (PN), the system comprising an estimation device (EST), implemented aboard the satellite or in a ground station, for estimating a pointing error of the antenna, the device for estimating a pointing error being configured to: acquire, for at least two channels of the transmitter or of the receiver, at least two test signals, each test signal having been transmitted or received by the antenna along a different direction (θA, θB), for at least one pair of acquired test signals, determine, for each test signal, a relative complex gain between the test signal received or transmitted respectively on two distinct channels, determine a comparative measurement between the two test signals from either the ratio between the two relative complex gains and/or the difference between the phases of the two relative complex gains, determine a pointing error (dθ) of the antenna on the basis of the comparative measurement, of the expected directions of transmission or of reception of the test signals (θA, θB) and of a model of the gain of the antenna for each channel and in a plurality of directions.


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    Titel :

    SYSTÈME ET PROCÉDÉ D'ESTIMATION D'UNE ERREUR DE POINTAGE D'UNE ANTENNE SATELLITE


    Weitere Titelangaben:

    SYSTEM AND METHOD FOR ESTIMATING A POINTING ERROR OF A SATELLITE ANTENNA
    SYSTEM UND VERFAHREN ZUM ABSCHÄTZEN EINES AUSRICHTUNGSFEHLERS EINER SATELLITENANTENNE


    Beteiligte:
    OSTER YANN (Autor:in)

    Erscheinungsdatum :

    2023-07-26


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Französisch


    Klassifikation :

    IPC:    B64G Raumfahrt , COSMONAUTICS / G01S RADIO DIRECTION-FINDING , Funkpeilung / H01Q Antennen , ANTENNAS, i.e. RADIO AERIALS / H04B TRANSMISSION , Übertragung



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