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    • 3. 发明公开
    • Retroreflecting transponder
    • Rückstrahlender转发器
    • EP2228866A1
    • 2010-09-15
    • EP09154881.8
    • 2009-03-11
    • Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)
    • Günther, ChristophBischl, HermannDreher, Achim
    • H01Q1/28H01Q3/26
    • H01Q1/288H01Q1/28H01Q3/2647H01Q3/2652
    • The Method for transmitting a signal from a transmitter in an area around the transmitter via a satellite comprising the steps of
      - transmitting a first signal having a first frequency from the transmitter to a satellite having a retrodirective antenna array comprising receiving antennas and transmitting antennas,
      - receiving the signal transmitted from the transmitter by the receiving antennas of the retrodirective antenna array as first signals wherein the first signals received by the receiving antennas have a phase relation among each other defined by the geometric arrangement of the receiving antennas, and
      - retrodirectively re-transmitting second signals from the transmitting antennas of the antenna array of the satellite in the direction towards the transmitter in the form of a beam with the transmitter located substantially in the center of the beam wherein the second signal has a second frequency different from the first frequency and wherein the phase relations among the second signal transmitted from the transmitting antennas of the antenna array of the satellite are substantially the same as the phase relations among the first signals received by the receiving antennas of the antenna array of the satellite.
    • 一种用于经由卫星在发射机周围的区域中从发射机发送信号的方法,包括以下步骤:将具有第一频率的第一信号从发射机发射到具有包括接收天线和发射天线的逆向天线阵列的卫星, 从所述发射机发送的所述信号由所述逆向天线阵列的接收天线接收,作为所述接收天线接收到的所述第一信号具有由所述接收天线的几何布置定义的相位关系的第一信号, 在发射机基本上位于波束的中心的方式上以波束的形式从卫星的天线阵列的发射天线发送第二信号,其中第二信号具有不同于第一频率的第二频率 并且其中所述seco之间的相位关系 从卫星的天线阵列的发送天线发送的nd信号基本上与由卫星的天线阵列的接收天线接收的第一信号之间的相位关系相同。