[time-nuts] GPS Antenna on Tower.
attila at kinali.ch
Wed Jun 21 04:26:35 EDT 2017
On Tue, 20 Jun 2017 16:34:14 +0000
Mark Sims <holrum at hotmail.com> wrote:
> I just added the ability to calculate solid earth tides and the vertical
> gravity offset due to the sun and moon to Lady Heather.
Cool! How do you calculate the displacement on a fixed position receiver?
> The lat/lon offset
> is typically around +/- 60 cm per day. Vertical offset is around +/-
> 180mm. Depending upon the day and where you are, the swings are not
> symmetrical around 0.0
This might be of interest:
(more papers available upon request)
> Solid earth tides are a BIG factor in precision geodesy. Gravity offset is
> a big issue for precision pendulum nuts. If your pendulum clock cannot
> detect gravity offsets (very few can) it's not nutty enough.
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use without that foundation.
-- Miss Matheson, The Diamond Age, Neil Stephenson
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