Hi
> On Jul 27, 2017, at 8:01 PM, Attila Kinali <att...@kinali.ch> wrote: > > On Thu, 27 Jul 2017 17:49:14 -0500 > Didier Juges <shali...@gmail.com> wrote: > >> I cannot imagine a work around since the problem stems from the GPS service >> only identifying the current date within a particular 1024 weeks epoch >> unless the government changes the amount of data that is sent over the GPS >> system. Somebody has to use other method to determine the epoch and add the >> corresponding offset. > > There is: There is a 13bit week number in message type 10. This gives > a 157 year span instead of the ~19 years of the 10bit week number. > This has been part of the GPS standard since IS-GPS-200D which was > released in 2004. The magic “extra bits” only get here when they launch the next block of GPS sat’s. That was sure to happen in 2005 … 2007 ….2011 … Last time I saw, it was out in 2018 / 2019. The “problem” is that the old ones are not dying as fast as they should. One would think that a simple re-shoot of firmware would get everything up to date. That’s not the way they make these beasts. Again good news / bad news. The same sort of approach makes them more reliable. It’s not the direct reason they are up there longer though. Bob > As such I am a little bit surprised that the u-blox > receivers still don't support this message (the LEA-5 family was released > in 2007 IIRC). But you can use the UBX RXM-SFRBX messages to get the > raw GPS messages and decode them yourself. > > > Attila Kinali > > -- > You know, the very powerful and the very stupid have one thing in common. > They don't alters their views to fit the facts, they alter the facts to > fit the views, which can be uncomfortable if you happen to be one of the > facts that needs altering. -- The Doctor > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.