公开(公告)号：US08866633B2

公开(公告)日：2014-10-21

申请号：US13889944

申请日：2013-05-08

Applicant: Schlumberger Technology Corporation

Inventor： Michael Montgomery ,  Julius Kusuma ,  Jean Seydoux ,  Desheng Zhang

IPC: G01V11/00 ,  G06F1/12

CPC classification number: G01V11/002 ,  G01V13/00 ,  G01V2200/12 ,  G06F1/12 ,  H04J3/0638 ,  H04L7/0054 ,  H04L7/04 ,  H04L7/08 ,  H04L2007/047

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20130251083A1

公开(公告)日：2013-09-26

申请号：US13889944

申请日：2013-05-08

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Michael Montgomery ,  Julius Kusuma ,  Jean Seydoux ,  Desheng Zhang

IPC: H04L7/00

CPC classification number: G01V11/002 ,  G01V13/00 ,  G01V2200/12 ,  G06F1/12 ,  H04J3/0638 ,  H04L7/0054 ,  H04L7/04 ,  H04L7/08 ,  H04L2007/047

Abstract: 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.

Abstract translation: 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。