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    • 10. 发明授权
    • Synchronization between devices
    • 设备之间的同步
    • US08514098B2
    • 2013-08-20
    • US12817355
    • 2010-06-17
    • Michael MontgomeryJulius KusumaJean SeydouxDesheng Zhang
    • Michael MontgomeryJulius KusumaJean SeydouxDesheng Zhang
    • G01V3/34G01V3/00H04L7/00
    • G01V11/002G01V13/00G01V2200/12G06F1/12H04J3/0638H04L7/0054H04L7/04H04L7/08H04L2007/047
    • The present disclosure relates to a method to determine a clock signal when separate clocks are used. In one embodiment, a disciplined clock system comprising an update subsystem and a synthesis subsystem is provided. A first clock phase estimate is provided to the update subsystem and used, along with the update subsystem, to determine a frequency offset estimate and a phase offset estimate. The clock signal is determining using the frequency offset estimate, the phase offset estimate, and the synthesis subsystem. Alternatively, two clocks can be synchronized by generating a signal associated with a first clock; modulating the signal; transmitting the modulated signal; receiving the modulated signal by a receiver associated with a second clock; correlating the received signal; determining the time of arrival of the received signal; determining the time difference between the two clocks; and synchronizing the two clocks.
    • 本公开涉及当使用单独的时钟时确定时钟信号的方法。 在一个实施例中,提供了包括更新子系统和综合子系统的纪律时钟系统。 向更新子系统提供第一时钟相位估计,并与更新子系统一起使用以确定频率偏移估计和相位偏移估计。 时钟信号是使用频率偏移估计,相位偏移估计和合成子系统来确定的。 或者,可以通过产生与第一时钟相关联的信号来同步两个时钟; 调制信号; 发送调制信号; 通过与第二时钟相关联的接收机接收调制信号; 对接收的信号进行相关; 确定接收到的信号的到达时间; 确定两个时钟之间的时差; 并同步两个时钟。