[LEAPSECS] New GPS Interface Specification IS-GPS-200J is out

[Tom Van Baak]

See below. Cross post from time-nuts...

BTW, have a look at how many bits the EOP parameters have, including DUT1, DUT1/day. That should keep astronomers happy for a while.

/tvb

----- Original Message ----- 
From: "Tom Van Baak" <tvb at LeapSecond.com>
To: "Discussion of precise time and frequency measurement" <time-nuts at lists.febo.com>
Sent: Monday, July 30, 2018 1:56 PM
Subject: Re: New GPS Interface Specification IS-GPS-200J is out

Thanks Leo.

For you low level time nerds, yes, even DoD can't get GPS time / UTC / UT1 / leap seconds right the first time. Synchronizing 3 time scales across a leap second discontinuity is really, really hard. More info about ICD rev-J here:

https://www.gps.gov/technical/icwg/meetings/2018/PIRN-IS-200J-001.pdf
"RFC Title: 2018 Proposed Changes to the Public Documents"

or search for RFC 374 here (page 67/117):

https://www.gps.gov/technical/icwg/meetings/2017/presentation.pdf
"Global Positioning Systems (GPS) Public Interface Control Working Group and Public Forum"

/tvb

----- Original Message ----- 
From: "Leo Bodnar" <leo at leobodnar.com>
To: <time-nuts at lists.febo.com>
Sent: Monday, July 30, 2018 12:58 PM
Subject: [time-nuts] New GPS Interface Specification IS-GPS-200J is out

> Hi,
> 
> For those who missed it - IS-GPS-200 has been updated a few months ago.
> 
> https://www.gps.gov/technical/icwg/IS-GPS-200J.pdf
> 
> Leo Bodnar