David Woolley <[EMAIL PROTECTED]> writes: >Unruh wrote:
>> >> Assuming the network noise is the 100us level, (which it is for example >> between me and Regina 3000km away) you should get the accuracy easily to >> 1ms in 1 sec. if all you want is the phase error. One packet exchange will >> give it to you. >You have an unused network. For about 20km between work and ISP it is >more like 100ms peak to peak. (2Mb/s 1:1) It is more like 20m. And even for 2000km (Vancouver to Regina) on the public CanadaNet network it is only 40ms. >> receiver would be better, especially if it know its location. Then within >> seconds it would know the time to nanoseconds. If it has to diiscover its >It's going to take at least 30 seconds to do that, as it will need the >detailed emphemeris data and that takes 30 seconds to transmit (it might >well pick the strongest signal and try to read the coarse ephemeris data >first; I'm not sure if that fits in the 30 seconds. _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
