[LEAPSECS] Time math libraries, UTC to TAI

John Sauter John_Sauter at systemeyescomputerstore.com
Wed Dec 28 08:37:38 EST 2016


On Wed, 2016-12-28 at 14:01 +0800, Sanjeev Gupta wrote:
> 
> On Tue, Dec 27, 2016 at 11:36 PM, John Sauter <John_Sauter at systemeyes
> computerstore.com> wrote:
> > > Also note that many large radar systems have built-in simulators,
> > > used 
> > > for system integration during development and for training
> > > thereafter.  
> > > Such simulators need to be able to work using system time that is
> > > not 
> > > the present, say to rerun recorded observations or to simulate
> > > future 
> > > or past scenarios.  In both cases, the GPS receiver does not know
> > > the 
> > > correct leap second offset to use.  The usual solution is an 
> > > application-provided table all past leap seconds, plus the next
> > leap 
> > > second (if known).  The table is updated manually.
> > 
> > That sounds like a fine solution.  It would be nice if the table
> > were
> > maintained by the group of people who needed it, so that everyone
> > wouldn't have to update his own table.
> > 
> 
> If I have understood you correctly, this is publicly available, based
> on the IERS Bulletin C:
> 
> https://www.ietf.org/timezones/data/leap-seconds.list
> 
> -- 
> Sanjeev Gupta
> +65 98551208     http://www.linkedin.com/in/ghane

You have understood me correctly; I was assuming that the radar systems
 did not use the NTP format for their leap seconds file.
    John Sauter (John_Sauter at systemeyescomputerstore.com)

-- 
PGP fingerprint E24A D25B E5FE 4914 A603  49EC 7030 3EA1 9A0B 511E
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 473 bytes
Desc: This is a digitally signed message part
URL: <https://pairlist6.pair.net/pipermail/leapsecs/attachments/20161228/d87f8a40/attachment.pgp>


More information about the LEAPSECS mailing list