Reply to post: Re: Interesting

Register Lecture: Can portable atomic clocks end UK dependence on GNSS?

gerdesj Silver badge

Re: Interesting

So you can travel 300 km in 1ms at the speed of light. That is not the same as the accuracy of a location fix if your clock has a 1 ms skew.

My phone often has a skew of rather more than that on its clock and yet can get a decent satellite only location fix via GPS. Using ntp with say five reasonable sources will generally settle down to about 1 ms without its own stratum 0 source.

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