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    • 2. 发明授权
    • Method of recovering a signal from a set of signals collected by satellite
    • 从由卫星收集的一组信号中恢复信号的方法
    • US08290484B2
    • 2012-10-16
    • US13029946
    • 2011-02-17
    • Thibaud CalmettesRémi Challamel
    • Thibaud CalmettesRémi Challamel
    • H04W4/00
    • H04B7/18513
    • A method of recovering a useful signal received by a satellite includes a step of reception by the satellite of a composite signal comprising said useful signal and collision signals, all of these signals being received simultaneously by the satellite, interfering with each other, and respectively being transmitted by transmitters. The method includes the steps of: direct reception, by at least one station of a terrestrial network, of signals corresponding to at least a non-zero portion of said collision signals and referred to as collected collision signals; for each collected collision signal, estimation, by a processing unit connected to the terrestrial network and to the satellite, of the collision signal received by the satellite as a function of (i) the collected collision signal received directly by the terrestrial station, (ii) the position of the transmitter at the time of transmission of this collision signal, and (iii) the position of the satellite during the reception of the composite signal; and extraction of the collected and estimated collision signals, from the composite signal, in order to allow recovery of the useful signal.
    • 一种恢复由卫星接收的有用信号的方法包括由卫星接收包括所述有用信号和冲突信号的复合信号的步骤,所有这些信号由卫星同时接收,彼此干扰,并且分别为 由发射机传输。 该方法包括以下步骤:通过地面网络的至少一个站直接接收与所述冲突信号的至少非零部分对应的信号,并称为收集的冲突信号; 对于每个收集的碰撞信号,由连接到地面网络和卫星的处理单元估计由卫星接收的碰撞信号作为(i)由地面站直接接收的收集的冲突信号的函数, )传送该冲突信号时发射机的位置,以及(iii)接收复合信号期间卫星的位置; 以及从复合信号中提取收集和估计的碰撞信号,以便允许恢复有用信号。