PROBLEM TO BE SOLVED: To provide an antenna switching device and an antenna switching method that can determine an antenna to be used for communication with a ground station by simple calculation.SOLUTION: An antenna switching device 20 includes: a GPS receiving unit 21 for outputting the position vector X and velocity vector V of a spacecraft 1; a ground station position acquisition unit 22 for acquiring a ground station position vector P in advance; a calculation unit 23 for finding the orbital plane vertical vector N of the spacecraft 1 by outer product computation of the position vector and velocity vector of the spacecraft 1 and finding an angle θ formed by the orbital plane vertical vector N and the ground station position vector P; and an antenna determination unit 24 for determining an antenna to be used on the basis of the angle θ.SELECTED DRAWING: Figure 1

    【課題】 簡易な計算で、地上局との通信に使用するアンテナを決定することができるアンテナ切替え装置及びアンテナ切替え方法を提供する。【解決手段】 アンテナ切り替え装置20は、宇宙機1の位置ベクトルXと速度ベクトルVを出力するGPS受信部21と、予め地上局位置ベクトルPを取得する地上局位置取得部22と、宇宙機1の位置ベクトル及び速度ベクトルの外積演算により宇宙機1の軌道面垂直ベクトルNを求め、軌道面垂直ベクトルNと地上局位置ベクトルPのなす角度θを求める計算部23と、角度θに基づいて使用するアンテナを決定するアンテナ決定部24を有する。【選択図】 図1


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    Title :

    ANTENNA SWITCHING DEVICE AND ANTENNA SWITCHING METHOD


    Additional title:

    アンテナ切替え装置及びアンテナ切替え方法


    Contributors:

    Publication date :

    2017-06-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H04B TRANSMISSION , Übertragung / B64G Raumfahrt , COSMONAUTICS



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