[H-GEN] Real Time Kinematic positioning

[Stephen Thorne]

Did it ... work?

On Sun, 13 Aug 2017 at 04:31 Russell Stuart <russell-humbug at stuart.id.au>
wrote:

> [ Humbug *General* list - semi-serious discussions about Humbug and     ]
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>
> Ray brought some gear to Humbug that achieved 1cm relative accuracy
> using GPS and some rather special algorithms.  These some, err,
> scepticism about the accuracy claims.  It's all explained on Wikipedia:
>
>     https://en.wikipedia.org/wiki/Real_Time_Kinematic
>
> The hardware needed to pull off this magic isn't your grandfathers GPS,
> but nonetheless it not too expensive either:
>
>     http://navspark.mybigcommerce.com/ns-hp-bd-gps-bds-rtk-receiver
>
> The algorithms needed to extrapolate from the carrier wave phase (the
> carrier wave is about 20cm long) seen from each satellite as reported
> by that chip to sub centimetre position have now been implemented as an
> open source library (and it's very, very well done):
>
>      https://github.com/tomojitakasu/RTKLIB/tree/master/app/rtknavi
>
> Getting that library running is what we were doing last night.
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