Method and device for measuring the distance between two stations
connected by a communications channel
    1.
    发明授权
    Method and device for measuring the distance between two stations connected by a communications channel 失效
    用于测量由通信信道连接的两个站之间的距离的方法和装置

    公开(公告)号:US6078786A

    公开(公告)日:2000-06-20

    申请号:US931646

    申请日:1997-09-16

    CPC分类号: G01S13/74 G01S13/76

    摘要: The invention relates to a method and a device for distance measuring between two stations (A1, B1) connected by a communication channel. The method is based on a command structure, wherein the satellite (A1, B1), by means of which a distance is to be determined, sends a range request (3) via an inter-satellite communication channel to the other satellite (A1or B1), which thereupon acknowledges this range request (3) with an answer (4). The distance is determined from the corresponding measurement of the cycle time. The range request (3) and the corresponding answer (4) are transmitted in a multiplexed communication channel.

    摘要翻译: 本发明涉及通过通信信道连接的两个站(A1,B1)之间的距离测量方法和装置。 该方法基于命令结构,其中通过距离来确定的卫星(A1,B1)经由卫星间通信信道向另一卫星发送距离请求(3)(A1或B1 ),然后通过答案(4)确认该范围请求(3)。 该距离由周期时间的相应测量确定。 范围请求(3)和相应的应答(4)在复用的通信信道中发送。

    Device for the homodyne reception of optically phase-keyed signals
    2.
    发明授权
    Device for the homodyne reception of optically phase-keyed signals 失效
    用于光学相位键信号的零差接收的装置

    公开(公告)号:US06704375B1

    公开(公告)日:2004-03-09

    申请号:US09363301

    申请日:1999-07-28

    IPC分类号: H03D322

    摘要: The device for the homodyne reception of optical phase-keyed signals comprises a heterodyne receiver (101, 102), a data discriminator (20), a frequency acquisition circuit (80) and a local oscillator laser (70). In addition, the device has a window discriminator circuit consisting of a window comparator (30) and a feedback unit (40), whose output is connected with the input of a reversing switch (50). The window comparator (30) has been inserted between the output of the heterodyne receiver (101, 102) and the one input of the feedback unit (40), whose other input is supplied with the output signal (Si) of the discriminator (20). The output of the frequency acquisition circuit (80) is connected with the other connector of the reversing switch (50), whose output signals supplied to the control input of the local oscillator laser (70). The window comparator (30) has two or more thresholds. The feedback unit (40) can have a control input for a quadrature channel (Sq). Use of the window comparator (30) permits the determination of the phase of the optical carrier signal, and therefore the phase regulation of the local oscillator laser (70).

    摘要翻译: 用于光接收相位信号的零差接收的装置包括外差接收器(101,102),数据鉴别器(20),频率获取电路(80)和本地振荡器激光器(70)。 此外,该装置具有由窗口比较器(30)和反馈单元(40)组成的窗口鉴别器电路,其输出端与反转开关(50)的输入端相连。 窗口比较器(30)已经插入在外差接收器(101,102)的输出端和反馈单元(40)的一个输入端之间,其另一个输入端被提供有鉴别器(20)的输出信号(20) )。 频率采集电路(80)的输出与反相开关(50)的另一个连接器相连,反相开关(50)的输出信号提供给本地振荡器激光器(70)的控制输入。 窗口比较器(30)具有两个或多个阈值。 反馈单元(40)可以具有正交通道(Sq)的控制输入。 使用窗口比较器(30)允许确定光载波信号的相位,并因此确定本地振荡器激光器(70)的相位调节。