[Loadstone] No Signal and Signal Acquired transitions.
shawn at odyssey.cm.nu
Sat Aug 11 06:33:45 BST 2007
When the receiver starts up it has to download the efemeris data from the
satellites to let it figure out where it is. It has to wait for this
download to complete before it can start getting signal. If I remember
correctly this data is sent every 30 seconds. So the receiver will have to
wait for the data to be sent, correctly download it, and then it can get a
gps signal. If there's any errors in the download then the process starts
all over again. I guess if you're moving it can effect this download
On Fri, 10 Aug 2007, Dave Mielke wrote:
> [quoted lines by Charlie Richardson on 2007/08/10 at 20:18 -0400]
>> Is it coincidence or a fact that GPS receivers don't acquire a signal if
>> trying in motion.
> Even though the first time is presented as "acquiring a signal", what it really
> means is that the receiver has to first figure out where it is on the earth.
> It's much easier for it to decide where it is if it isn't being moved around.
> Dave Mielke | 2213 Fox Crescent | I believe that the Bible is the
> Phone: 1-613-726-0014 | Ottawa, Ontario | Word of God. Please contact me
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