Reply to post: Re: end UK dependance on GPS?

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

Alan Brown Silver badge

Re: end UK dependance on GPS?

"These were land radio based systems that could provide a position fix to within 300m or so"

Supposedly. Under ideal conditions. Close to the transmitters

Reality, earth curvature, ionospheric waveguide effects, time of day and the shape of the land/sea interface always degraded that somewhere between slightly and "you won't believe how far out it is"

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