RE: [LEAPSECS] RAS hits the news

From: Hornaday, Tem SPAWAR <tem.hornaday_at_NAVY.MIL>
Date: Mon, 26 Sep 2005 13:07:26 -0700

Or, at least, be in error by some modulo 19.6 year value.

Not a major catastrophe, but mitigation could be a major expense for
some GPS users.

--Tem

-----Original Message-----
From: Leap Seconds Issues [mailto:LEAPSECS_at_ROM.USNO.NAVY.MIL] On Behalf
Of Ed Davies
Sent: Monday, September 26, 2005 12:24 PM
To: LEAPSECS_at_ROM.USNO.NAVY.MIL
Subject: Re: [LEAPSECS] RAS hits the news


Hornaday, Tem SPAWAR wrote:
> ...
> 3. As has been pointed out, some receivers also implement a clever
> hack to determine date that looks at UTC Leap Second (LS) value, and
> chooses a date based on WN, TOW, and LS. That is, the receiver
> implements a sliding 1024-week window whose limits are determined by
> the current value of LS. Current date "will" then reside within this
> 1024-week window.

So, dropping leap seconds from UTC would cause these receivers to,
eventually, go back 19 years on cold start? Hardly a major catastrophe
but worth noting.
Received on Mon Sep 26 2005 - 13:07:40 PDT