Dynamic compensation of signals for space telecommunication repeaters
    1.
    发明授权
    Dynamic compensation of signals for space telecommunication repeaters 失效
    空间电信中继器信号的动态补偿

    公开(公告)号:US06430392B1

    公开(公告)日:2002-08-06

    申请号:US09280668

    申请日:1999-03-29

    IPC分类号: H04B7185

    CPC分类号: H04W52/143 H04B7/18513

    摘要: A satellite for a satellite telecommunication system transmits signals at different powers on the downlink connection. The powers are chosen to limit the relative dynamic range of signals received on the downlink connection. The relative dynamic range of signals received on the downlink connection is advantageously less than 5 dB and preferably less than 2 dB. A digital processor circuit is used, together with an analog-digital converter, a circuit taking the fast Fourier transform of the converted signals, a circuit for monitoring the gain of the signals, a circuit for switching the signals to at least two amplifier subsystems each including an inverse fast Fourier transform circuit, a digital-analog converter and a power amplifier.

    摘要翻译: 用于卫星电信系统的卫星在下行链路连接上发射不同功率的信号。 选择功率来限制在下行链路连接上接收的信号的相对动态范围。 在下行链路连接上接收的信号的相对动态范围有利地小于5dB,优选小于2dB。 数字处理器电路与模拟数字转换器一起使用对转换的信号进行快速傅里叶变换的电路,用于监视信号的增益的电路,用于将信号切换到每个至少两个放大器子系统的电路 包括逆快速傅里叶变换电路,数模转换器和功率放大器。

    Method of communication between earth stations using a constellation of satellites
    2.
    发明授权
    Method of communication between earth stations using a constellation of satellites 失效
    使用卫星星座的地球站之间的通信方法

    公开(公告)号:US06545787B1

    公开(公告)日:2003-04-08

    申请号:US09292336

    申请日:1999-04-15

    IPC分类号: H04B1000

    CPC分类号: H04B7/18521

    摘要: The invention concerns a method of communication between ground stations via satellites traveling around the Earth and forming part of a constellation overflying at least a major portion of the Earth, each ground station communicating during a particular time with a given satellite of the constellation. Two ground stations communicate via respective given satellites with which the stations are respectively communicating. To minimize the control means on board each satellite, the two satellites communicate via a predetermined communications link. A link of the above kind generally comprises one or more predetermined satellites.

    摘要翻译: 本发明涉及通过围绕地球传播的卫星的地面站之间的通信的方法,并且形成覆盖至少大部分地球的星座的一部分,每个地面站在特定时间内与星座的给定卫星进行通信。 两个地面站通过相应站点分别通信的各个给定卫星进行通信。 为了最小化每个卫星上的控制装置,两颗卫星通过预定的通信链路进行通信。 上述的链路通常包括一个或多个预定的卫星。