[time-nuts] nuts about position (cheap receiver)
kb8tq at n1k.org
Thu May 3 17:32:09 EDT 2018
…… and the quoted errors are in the 10’s of cm range. Thus you need a few years,
even if you are moving an inch per year.
> On May 3, 2018, at 2:19 PM, Hal Murray <hmurray at megapathdsl.net> wrote:
> kb8tq at n1k.org said:
>> If you have a very good survey grade receiver and take a long enough data
>> set, yes you can watch your location drift in some parts of the world. In
>> most locations, fixes a few years apart would be a better bet.
> I'm in Silicon Valley. The San Andreas fault is a few miles from here. A
> map of the bay area will show a dozen major faults. A neighborhood map may
> have several smaller lines.
> The USGS has good GPS receivers sprinkled around the area. You can see
> antenna domes on a post alongside the highway.
> (Time sink warning.)
> The fault moves about as fast as your fingernails grow, an inch per year.
> That's one side relative to the other. I don't know how fast the pair is
> These are my opinions. I hate spam.
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