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    • 4. 发明授权
    • Satellite communications system having transmitting station diversity
    • 具有发射台多样性的卫星通信系统
    • US08351471B2
    • 2013-01-08
    • US11993719
    • 2006-06-15
    • Christian Rigal
    • Christian Rigal
    • H04J3/06
    • H04B7/18534
    • The invention relates to a method for transmitting signals termed useful signals via a satellite by means of connection stations. To this end, a first connection station (CNX1) carries out the generation of a first service signal on a service carrier frequency dubbed the pilot signal (Fp), and the transmission of this pilot signal to at least one second connection station (CNX2). The use of this pilot signal ensures phase synchronization and temporal synchronization of the signals so as to implement a transmit diversity, that is to say to toggle the transmission of the useful signal by this second connection station without loss of phase synchronization between the two stations. The invention applies to the Frequency Division Multiple Access (FDMA) signal communications by satellites.
    • 本发明涉及通过连接站通过卫星发送被称为有用信号的信号的方法。 为此,第一连接站(CNX1)在被配置为导频信号(Fp)的服务载波频率上执行第一服务信号的生成,并且将该导频信号发送到至少一个第二连接站(CNX2) 。 该导频信号的使用确保了信号的相位同步和时间同步,以便实现发射分集,也就是说,通过该第二连接站切换有用信号的传输,而不损失两个站之间的相位同步。 本发明适用于通过卫星进行的频分多址(FDMA)信号通信。
    • 9. 发明授权
    • Device for semi-transparent multiplexing of data stream for a communication satellite
    • 用于通信卫星的数据流的半透明复用的装置
    • US08116255B2
    • 2012-02-14
    • US12066497
    • 2006-09-22
    • Christian RigalJean-Didier Gayrard
    • Christian RigalJean-Didier Gayrard
    • H04B7/00
    • H04H20/74H04H60/90H04H2201/30H04N7/20H04N21/6143H04N21/6193
    • A device (D) is dedicated to data stream processing within a communication satellite of a communication network. This device (D) comprises processing means (MT) whose job is, in the event of receipt of a first incoming data stream whose carrier exhibits a first modulation and comprising at chosen locations chosen insertion blocks, i) to detect the insertion blocks and at least one characteristic of the carrier of the first incoming stream, chosen from among its frequency, its phase, its timing and its amplitude, ii) to modulate, in accordance with the first modulation and having regard to each detected characteristic, data packets to be transmitted to a destination common with that of the first incoming stream, and iii) to replace with the modulated packets certain at least of the insertion blocks detected in the first incoming stream which has not been demodulated, so that the resulting stream is transmitted by the satellite, with its first original modulation, to the common destination so as to be demodulated therein as if it had been constituted by a single modulator.
    • 设备(D)专用于通信网络的通信卫星内的数据流处理。 该装置(D)包括处理装置(MT),其作业是在接收到其载体呈现第一调制的第一输入数据流的情况下并且包括在所选择的位置处被选择的插入块,i)以检测插入块并且在 从其频率,其相位,其定时和其幅度中选出的第一输入流的载波的至少一个特征,ii)根据第一调制并且考虑到每个检测到的特性,将数据分组调制为 发送到与第一进入流的通用目的地相同的目的地,以及iii)用至少在未被解调的第一进入流中检测到的插入块中的至少一个插入块替换为调制分组,使得所得到的流由 卫星,其第一原始调制到共同的目的地,以便在其中进行解调,好像它是由单个调制器构成的。
    • 10. 发明授权
    • High capacity multibeam antenna with electronic scanning in transmission
    • 具有电子扫描传输的高容量多波束天线
    • US5734349A
    • 1998-03-31
    • US587486
    • 1996-01-17
    • Regis LenormandBernard CoulombJean-Philippe MarreMichel TatardChristian RigalCharles Villemur
    • Regis LenormandBernard CoulombJean-Philippe MarreMichel TatardChristian RigalCharles Villemur
    • H01Q25/00H01Q3/22
    • H01Q25/007
    • The invention provides a multibeam antenna comprising: an array 11 of N.sub.e elementary sources 31; energy-focusing optical means comprising a reflector 10 or a lens; the array being situated in the focal zone of said focusing means: and a feed and control circuit cooperating with the N.sub.e primary sources 31 to produce N.sub.b beams each generated from a subgroup of the primary sources, some of which are shared between overlapping beams; the feed and control circuit comprising phase shifter means and attenuator means, said means being organized in N.sub.e feed channels for said N.sub.e primary sources, each feed channel including specific means for acting on the phase and the amplitude of an excitation signal in each feed channel; wherein each required beam is generated by the multibeam antenna solely by acting on the phase and the amplitude of the excitation delivered to each elementary source forming a portion of said beam; and wherein the number of sources N.sub.i contributing to a beam i, 1.ltoreq.i.ltoreq.N.sub.b, varies and is determined as a function of the characteristics desired for said beam i. The antenna is applicable to satellite telecommunications, in particular for on-board antennas of high capacity.
    • 本发明提供一种多波束天线,包括:Ne基本源31的阵列11; 能量聚焦光学装置包括反射器10或透镜; 所述阵列位于所述聚焦装置的焦点区域中;以及馈送和控制电路,与所述Ne初级源31配合,以产生每个从所述主要源的子组生成的Nb波束,其中一些在重叠波束之间共享; 所述馈送和控制电路包括移相器装置和衰减器装置,所述装置被组织在所述Ne初级源的Ne馈送通道中,每个馈送通道包括用于作用在每个馈送通道中的激励信号的相位和幅度的特定装置; 其中每个所需光束仅由多波束天线通过作用于形成所述光束的一部分的传递到每个基本光源的激光的相位和振幅而产生; 并且其中对光束i贡献的源Ni的数量变化,并且被确定为所述光束i所需的特性的函数。 该天线适用于卫星电信,特别适用于高容量的车载天线。