GPS时间同步精度
我有一个 GPS NTP 时间服务器同步我的电脑。 我如何能够将 GPS 接收器的 1PPS 与我的 PC 的时钟脉冲进行比较,以了解它与 GPS 时间同步的准确程度?(也许可以使用示波器!)
i have a GPS NTP Time server synchronizing my PC.
HOW am i able to compare 1PPS of the GPS receiver with clock pulse of my PC to see how much accurately it is synced to the GPS time?(with an oscilloscope maybe!)
如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱,如果其他用户或者作者回复了您的评论,将不能在第一时间通知您!
发布评论
评论(1)
我以前设计过此类实验。就我而言,我编写了一个设备驱动程序,该驱动程序将在内核内部以紧密循环的方式监视 PC 的时钟,等待它翻转到新的一秒。一旦完成,我就会将 PC 并行端口上的一个引脚拉高。然后我将并行端口的引脚和 GPS 接收器的 PPS 信号输出连接到示波器,并让它测量两个脉冲之间的时间差。
I've designed experiments of this sort before. In my case, I wrote a device driver that would -- inside the kernel -- watch the PC's clock in a tight loop waiting for it to roll over to a new second. As soon as it did, I would raise one of the pins high on the PC parallel port. Then I attached that pin of the parallel port and the PPS signal output of the GPS receiver to an oscilloscope and had it measure the time difference between the two pulses.