The current GPS data format will fail in approximately 2057, 2079, or
2095 for decelerations of 42, 31, or 25.6 s/cy2, respectively.
In terms of deployed systems, that's Real Soon Now.
Not to worry. It won't fail. The solution is simply
to let delta t sub LS in page 18 subframe 4 roll over
The W1K rollover for GPS was in 1999, and all that year was spent
testing various systems to see how they would fail. It would not be
at all surprising if the impending doom of the leap second counter was
noticed during a review of other deficiencies in the GPS system.
Please see:
Some
On Thu 2004-01-01T15:48:01 -0800, Tom Van Baak hath writ:
Some historical notes on the GPS Week Number Rollover
http://www.leapsecond.com/notes/gpswnro.htm
I think the LEAPSECS group will find the part about the
GPS leap second patent quite interesting!
Wow. I can barely imagine being
On Thu 2004-01-01T15:48:01 -0800, Tom Van Baak hath writ:
Some historical notes on the GPS Week Number Rollover
http://www.leapsecond.com/notes/gpswnro.htm
I think the LEAPSECS group will find the part about the
GPS leap second patent quite interesting!
So here is an obvious exercise for the
On Wed 2003-12-24T13:33:37 -0800, Steve Allen hath writ:
The current downlink data format for the GPS satellites stores the
difference between GPS system time and UTC using 8-bits.
oops. I've just re-read the GPS Interface Control Document.
Those 8-bits are a signed quantity. It can count to
In message [EMAIL PROTECTED], Steve Allen writes:
On Wed 2003-12-24T13:33:37 -0800, Steve Allen hath writ:
The current downlink data format for the GPS satellites stores the
difference between GPS system time and UTC using 8-bits.
oops. I've just re-read the GPS Interface Control Document.
