http://www.navcen.uscg.gov/?Do=constellationStatus
http://www.gps.gov/systems/gps/space/
IIRC: 6 planes, 6 slots each, so 36 to cover the sphere, and the GPS
aperture is big (high orbits) so guess up to 1/2 of the constellation could
ever be in view (... yeah, right): 18?
On Thu, Jul 9, 2015 at
My tbolt is reporting 29 currently active PRNs...
27 Sats in the sky.
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Well, you would think so...
There is 37 PRN codes, of which the top 5 is for testing.
However, in the modern ICD:
http://www.gps.gov/technical/icwg/IS-GPS-200H.pdf
you will find that there is an extended set of PRN codes, and for the
C/A code the modulation is the same, just that the
Is there a practical limit to the number of GPS sats overhead at any one
time? I ask this because I'd like to start parsing this info from my ublox
receiver and need to setup an array for the values. Memory is not unlimited
on my PIC.
Bob - AE6RV
==
Others have
From http://www.gps.gov/systems/gps/space/
Block IIA: 3 operational
Block IIR and IIR(M): 19 operational
Block IIF: 9 operational
so they should be 31 satellites working.
On Fri, Jul 10, 2015 at 7:20 AM, Magnus Danielson
mag...@rubidium.dyndns.org wrote:
Well, you would think so...
There is 37
On 7/10/15 6:23 AM, Azelio Boriani wrote:
From http://www.gps.gov/systems/gps/space/
Block IIA: 3 operational
Block IIR and IIR(M): 19 operational
Block IIF: 9 operational
so they should be 31 satellites working.
Plus various and sundry WAAS and similar signals?
Yes, and the 10th Block IIF is 4 days from launch.
We can expect there to take some time before it is brought into the
constallation.
It's only with Block III that we can expect this extended set of PRN
codes to be supported and used.
Cheers,
Magnus
On 07/10/2015 03:23 PM, Azelio Boriani
My tbolt is reporting 29 currently active PRNs...
27 Sats in the sky.
Have you checked the satellite numbers/svid?
They squeeze the WAAS satellites into the same number space.
Are TBolts new enough to know about WAAS?
--
These are my opinions. I hate
Hi
On Jul 10, 2015, at 1:27 PM, Hal Murray hmur...@megapathdsl.net wrote:
My tbolt is reporting 29 currently active PRNs...
27 Sats in the sky.
Have you checked the satellite numbers/svid?
They squeeze the WAAS satellites into the same number
Sent: Thursday, July 9, 2015 5:48 PM
Subject: Re: [time-nuts] Number of GPS sats in the sky?
http://www.navcen.uscg.gov/?Do=constellationStatushttp://www.gps.gov/systems/gps/space/
IIRC: 6 planes, 6 slots each, so 36 to cover the sphere, and the GPS aperture
is big (high orbits) so guess up to 1
: [time-nuts] Number of GPS sats in the sky?
http://www.navcen.uscg.gov/?Do=constellationStatushttp://www.gps.gov/systems/gps/space/
IIRC: 6 planes, 6 slots each, so 36 to cover the sphere, and the GPS aperture
is big (high orbits) so guess up to 1/2 of the constellation could ever
Hi
If you are talking about GPS only, *and* a rational altitude *and* a rational
elevation mask …
12 should be a pretty good max number.
Bob
On Jul 9, 2015, at 1:54 PM, Bob Stewart b...@evoria.net wrote:
Is there a practical limit to the number of GPS sats overhead at any one
time? I
The GPS system is pretty much limited to 32 active satellites. There are
currently 29 satellites broadcasting usable navigation data. Plus some WAAS
signals from geosynchronous orbit.
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b...@evoria.net said:
Is there a practical limit to the number of GPS sats overhead at any one
time?
I think there is a 5 bit field for the satellite number in some of the packet
formats. You are unlikely to see more than half of them.
I think they actually have more than 32 satellites up
Is there a practical limit to the number of GPS sats overhead at any one time?
I ask this because I'd like to start parsing this info from my ublox receiver
and need to setup an array for the values. Memory is not unlimited on my PIC.
Bob - AE6RV
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