Re: PRN32

"Sam Wormley" <swormley1@xxxxxxxxx> a écrit dans le message de news:
i44xj.51622$yE1.49443@xxxxxxxxxxxx
Dan Fletcher wrote:
Now that they switched 32 "on" as usable, I was watching the different
receivers that I have and when 32 came into view, none of them seem to
have picked up on it. When I do a hard-reset on one of them and power
cycle a different one, they'll see 32, get ephemeris data for it, and
even start to use it for positional determination, but then anywhere from
3-5 minutes after reset/power-on, 32 will suddenly disappear, as though
it's not even there! So, my thinking is that as the receiver updates its
almanac, someone must still be saying that 32 is unusable. How long does
it take for the constellation to update its almanac information? Is it
something that takes 24 hours to propagate to everyone?



Or, is there a different reason why my receivers will see, then suddenly
not see 32?




Tonight I'm tracking (and using) PRN32 on three Trimble mapping
receivers... Too close to setting to check it on my old Trimble
Scoutmaster (out in the car) tonight.


This morning I received PRN32 loud and clear on my ancient GPS12.
--
Colin


.

Relevant Pages

  • Re: PRN32
    ... receivers that I have and when 32 came into view, none of them seem to have picked up on it. ... So, my thinking is that as the receiver updates its almanac, someone must still be saying that 32 is unusable. ... How long does it take for the constellation to update its almanac information? ... Tonight I'm tracking PRN32 on three Trimble mapping ...
    (sci.geo.satellite-nav)
  • PRN32
    ... Now that they switched 32 "on" as usable, I was watching the different ... So, my thinking is that as the receiver updates its almanac, someone ... constellation to update its almanac information? ... Or, is there a different reason why my receivers will see, then suddenly not ...
    (sci.geo.satellite-nav)