This just came in
Air Force Official Press Release - GPS Ground System Anomaly
On 26 January at 12:49 a.m. MST, the 2nd Space Operations Squadron at the
50th Space Wing, Schriever Air Force Base, Colo., verified users were
experiencing GPS timing issues. Further investigation revealed an issue i
Magnus Danielson wrote:
> Charles,
>
> Considering how the UTC parameters (IS-GPS-200H, Table 20-IX and section
> 20.3.3.5.2.4) got upset for some of the SVNs, the correction from GPS
> time (as corrected for that PRN) into UTC got a shift of almost 13,7 us.
> As a GPS receiver receives informatio
Charles,
Considering how the UTC parameters (IS-GPS-200H, Table 20-IX and section
20.3.3.5.2.4) got upset for some of the SVNs, the correction from GPS
time (as corrected for that PRN) into UTC got a shift of almost 13,7 us.
As a GPS receiver receives information, solves for position and time
Update on PRN 32 / SVN 23
According to the NANU this was decommissioned at 22:00 on the 25th. It was 25
years old http://archive.is/a8GI
Some timing receivers experienced problems, some did not. Don't know why that
is yet.
So far our count is 8 different GPS timing receivers experiencing probl
Magnus wrote:
Interestingly enough they did not experience issues at the same
time, it just started about the same time.
Presumably, each rx would be affected when it added one or more
corrupted satellites to the constellation it was using for its
solution. Since each rx makes those decisio
Hi,
It seems that several SVNs (PRN 2, 6, 7, 9 and 23) got feed bad data.
This is not the first instance, it seems that single SVNs have had bad
data the last couple of days.
When our 4 GPS receivers at work got "hit" at midnight, it got our
attention. Interestingly enough they did not exper
Tom
This is what I sent unchecked Rich Text (HTML) now
Has anyone noticed GPS problems today?
It looks like PRN32 / SVN 23 went faulty yesterday and was taken out of service
last night at 22:00 ZULU
http://www.navcen.uscg.gov/?Do=gpsShowNanu&num=2016008
We've seen issues with a number of
> One more comment on this, SV 32/PRN 32 was briefly in use in 1992-3.
>
> "SV-32 has been active since Dec 11. [1992]" -
> http://igscb.jpl.nasa.gov/mail/igsreport/1992/msg00054.html
>
> "On 28 January (day 028) [1993], SV-32's PRN number has been changed
> from PRN#32 to PRN#01 sometimes bet
One more comment on this, SV 32/PRN 32 was briefly in use in 1992-3.
"SV-32 has been active since Dec 11. [1992]" -
http://igscb.jpl.nasa.gov/mail/igsreport/1992/msg00054.html
"On 28 January (day 028) [1993], SV-32's PRN number has been changed
from PRN#32 to PRN#01 sometimes between UTC 20:55
From: [EMAIL PROTECTED] (Mike S)
Subject: Re: [time-nuts] GPS PRN 32
Date: Sat, 09 Feb 2008 21:52:59 -0500
Message-ID: <[EMAIL PROTECTED]>
> At 07:42 PM 2/9/2008, Bruce Griffiths wrote...
> >The Jupiter documentation indicates that PRN range is 1-32 with 0 used
> >to in
At 07:42 PM 2/9/2008, Bruce Griffiths wrote...
>The Jupiter documentation indicates that PRN range is 1-32 with 0 used
>to indicate all satellites.
You should be good, then, since the developers obviously accommodated a
PRN 32.
The statement quoted from the original article ("GPS receivers
init
The Novatel Superstar GPS receiver should also be OK for receiving PRN32.
The supplied software has provision for monitoring the health of all 32
possible satellites.
It also has provision for selectively ignoring any of the 32 possible
satellites.
Bruce
__
> The Jupiter documentation indicates that PRN range is 1-32 with 0 used
> to indicate all satellites.
> So you may have some luck with that receiver.
>
> Bruce
Bruce,
An actual test is in order, of course, but speaking as a software
engineer, anytime you hear "0 indicates all" and "1 to 32" it'
Chris Kuethe wrote:
> On Feb 8, 2008 2:07 PM, Bruce Griffiths <[EMAIL PROTECTED]> wrote:
>
>> My Z3815A sees PRN 32 now albeit as unhealthy.
>>
>
> My Ublox AEK-4T has an almanac for PRN32, but no ephemeris (duh.)
>
> haven't tried my AC12, Lassen iQ, itrax03, gps18/lvc, UT+, GT+ or Jupiter
On Feb 8, 2008 2:07 PM, Bruce Griffiths <[EMAIL PROTECTED]> wrote:
> My Z3815A sees PRN 32 now albeit as unhealthy.
My Ublox AEK-4T has an almanac for PRN32, but no ephemeris (duh.)
haven't tried my AC12, Lassen iQ, itrax03, gps18/lvc, UT+, GT+ or Jupiter yet...
CK
--
GDB has a 'break' feature
Bruce Griffiths wrote:
> Poul-Henning Kamp wrote:
>
>> In message <[EMAIL PROTECTED]>, Bruce Griffiths writes:
>>
>>
>>> Bruce Griffiths wrote:
>>>
>>>
Tom
My Z3815A sees PRN 32 now albeit as unhealthy.
Bruce
>>>
My Thunderbolt (nor any of the others, of course) cannot see this one at
present, but TBolt Mon is showing a yellow button indicating "incomplete
or incorrect almanac". So it knows something's up!
dr
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Poul-Henning Kamp wrote:
> In message <[EMAIL PROTECTED]>, Bruce Griffiths writes:
>
>> Bruce Griffiths wrote:
>>
>>> Tom
>>>
>>> My Z3815A sees PRN 32 now albeit as unhealthy.
>>>
>>> Bruce
>>>
>>>
>>>
>> My M12+ T doesn't see SVN 23 (PRN32) although its shares the same antenna.
Poul-Henning Kamp wrote:
> In message <[EMAIL PROTECTED]>, Bruce Griffiths writes:
>
>> Bruce Griffiths wrote:
>>
>>> Tom
>>>
>>> My Z3815A sees PRN 32 now albeit as unhealthy.
>>>
>>> Bruce
>>>
>>>
>>>
>> My M12+ T doesn't see SVN 23 (PRN32) although its shares the same antenna.
In message <[EMAIL PROTECTED]>, Bruce Griffiths writes:
>Bruce Griffiths wrote:
>> Tom
>>
>> My Z3815A sees PRN 32 now albeit as unhealthy.
>>
>> Bruce
>>
>>
>My M12+ T doesn't see SVN 23 (PRN32) although its shares the same antenna.
By default the M12 will not track an unhealty satellite if it
Bruce Griffiths wrote:
> Tom
>
> My Z3815A sees PRN 32 now albeit as unhealthy.
>
> Bruce
>
>
My M12+ T doesn't see SVN 23 (PRN32) although its shares the same antenna.
Bruce
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Tom Van Baak wrote:
> Which time-nut will be the first to see PRN 32 on Feb 19?
> I wonder what old GPS receivers won't be able to see it?
>
> This is from GPS World via NavtechGPS News...
>
>
> "The U.S. military announced earlier this week that GPS satellite SVN23,
> transmitting L-band code
Which time-nut will be the first to see PRN 32 on Feb 19?
I wonder what old GPS receivers won't be able to see it?
This is from GPS World via NavtechGPS News...
"The U.S. military announced earlier this week that GPS satellite SVN23,
transmitting L-band code as PRN32, will be set to usable s
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