SVN 65 PRN 24 is made usable 14 Nov 2012.
This is the third GPS IIF satellite and was launched on October 4.
GPS 2F-4 is scheduled for a May 2013 launch.
Paul in PA
can old GPS receivers record this new satellite? like the stratus, locus, other legacy gps units?
Yes, They Still Have L1 and L2
Once there are 6 to 8 2Fs up there, the L1/L2/L5 combination will pay off in much shorter and more precise observations. But within the lifetime of even new equipment you have yet to buy it is unlikely they will stop any old signals. In 10 to 15 years an L5 only receiver would be feasible, but the electronics will be so much cheaper, most will opt for 3 frequencies in at least three different systems. Most will look like the cute little Locus, but with Bluetooth or WiFi instead of the pioneering wireless infrared.
Paul in PA
Paul
Yer buggin me.
How come you are always up to date on this stuff?
I can't seem to keep up with all the families birfdays, let alone what is goin on upstairs!
Do you like watch this stuff, like some folks do FAcebook?
Or are you somehow involved in it?
N
Nate
If you are serious about GPS go the the following Coast Guard site and sign up for NANUs (Notice Advisory to Navstar Users).
At least once a day you will get an email, listing the full constellation and a list of current/upcoming outages.
Regarding SVN 65 that NANU was in the form of a USABINIT, I'll let you figure it out.
Or see Glenn's post below.
In addition I follow the space program at SpaceFlightNow.com. International space news, launch schedules and live streaming video of launches, etc.
I also receive 3 different GNSS magazines and email updates from same. I have been a Space Junky since Walt Disney's super space cartoon in the 50's. I understand NASA based some of their concepts per Walt Disney's imagination.
Paul in PA
The U.S. Coast Guard will be glad to tell you
(Oops - Paul already answered Nate. Oh well.)
The USCG Navigation Center sends out (usually by e-mail) what they call Notice Advisories to NAVSTAR Users (NANU) that look like
[inlinecode]
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2012070
SUBJ: SVN65 (PRN24) USABLE JDAY 319/0033
1. NANU TYPE: USABINIT
NANU NUMBER: 2012070
NANU DTG: 140038Z NOV 2012
REFERENCE NANU: N/A
REF NANU DTG: N/A
SVN: 65
PRN: 24
START JDAY: 319
START TIME ZULU: 0033
START CALENDAR DATE: 14 NOV 2012
STOP JDAY: N/A
STOP TIME ZULU: N/A
STOP CALENDAR DATE: N/A
2. CONDITION: GPS SATELLITE SVN65 (PRN24) WAS USABLE AS OF JDAY 319
(14 NOV 2012) BEGINNING 0033 ZULU.
3. POC: CIVILIAN - NAVCEN AT 703-313-5900, HTTP://WWW.NAVCEN.USCG.GOV
MILITARY - GPS OPERATIONS CENTER at HTTPS://GPS.AFSPC.AF.MIL/GPSOC, DSN 560-2541,
COMM 719-567-2541, gpsoperationscenter at us.af.mil, HTTPS://GPS.AFSPC.AF.MIL
MILITARY ALTERNATE - JOINT SPACE OPERATIONS CENTER, DSN 276-3514,
COMM 805-606-3514, JSPOCCOMBATOPS at VANDENBERG.AF.MIL
[/inlinecode]
The NANU above is the notification about the new satellite, looks like it is NANU 70 for 2012.
You can subscribe to receive NANUs at no charge.
GB
Ok "I'm a space junkie"
I guess that tells it all.
Thanks!
I just thought you'd have to mine all that info, you come up with, instead of it coming to your inbox every day.
Nate
The U.S. Coast Guard will be glad to tell you
Hey Glenn, Question;
Will these new Satellites automatically be detectable through a broadcast ephemeris?
I had my little GNSS butt handed to me today with PRN24 in the constellation. I'm not
understanding my poor 3D quality earlier.
New GPS satellites
I am in no way an expert on these matters, but AFAIK every receiver with which I have had experience works fine with new satellites as they join the constellation and are added to the almanac. Mayhaps once in a great while it helps to reset the receiver to force collection of a new almanac, but that is very unusual.
My Trimble NetRS (that I can check without getting off my lazy rear end) is tracking PRN24 right now.
Did you get bad results that you believe could be attributed to the new satellite?
GB
New GPS satellites
I couldn't honestly explain the poor results. There have been more limited horizons with substantially better results, where today's horizon was clear.
I just saw this note by Paul and thought..hmmmm, and thought i would ask. Thanks.
R.J. ?
Certain GPS receivers have problems when there is a full slate of 32 satellites turned on.
Give some more details.
If you suspect that contact NGS and/or your manufacturer and see what they recommend.
Paul in PA
R.J.
I just got some files that were collected this afternoon with my 1999 era Novatel DL L1/L2 receivers (that still have the original 1999 firmware installed).
PRN 24 is alive and well.
Loyal
Paul, Loyal
Old Leica 500 series L1/L2, that for as old as it may be, produces some repeatable results. I just need to do my homework here. Thanks.
