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With which time synchronization method I can achieve more accuracy to the absolute UTC time? I use GPS with PPS for now but I want to compare these sources.
Assume the following items:
- Internet is availible
- May two cases, NTP via internet or LAN
Ideally with indication of source.
- Based on the rule of thumb I found about NTP 5-100ms.
- GPS due to serial line, interrupt delay should be worse.
- GPS with PPS < 1ms.
Are these values more or less correct?
Thanks for your answer. Found that site before too. All GPS modules use PPS. Did you also know/find the accuracy without PPS? – wenzul – 2014-12-07T06:15:39.280
See edited answer. – agtoever – 2014-12-07T06:31:36.927
Thanks for editing. Yes I found this Google hits months ago too and implemented GPS with PPS. I thought there may will be more validated information and details about accuracy. – wenzul – 2014-12-07T07:33:52.827