[time-nuts] Number of GPS sats in the sky?

Bob Stewart bob at evoria.net
Thu Jul 9 19:06:50 EDT 2015


Thanks Chris and everyone else who responded.  I just didn't know what to look for.  The full 36 shouldn't take up all that much memory.
Bob
      From: Chris Hoffman <cq.kg6o at gmail.com>
 To: Bob Stewart <bob at evoria.net>; Discussion of precise time and frequency measurement <time-nuts at febo.com> 
 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 1/2 of the constellation could ever be in view (... yeah, right): 18?


On Thu, Jul 9, 2015 at 10:54 AM, Bob Stewart <bob at evoria.net> wrote:

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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