[Loadstone] No Signal and Signal Acquired transitions.

Charlie Richardson charlieofalbany at hotmail.com
Sun Aug 12 00:19:28 BST 2007


OK, this makes sense.
----- Original Message ----- 
From: "Shawn Kirkpatrick" <shawn at odyssey.cm.nu>
To: <loadstone at loadstone-gps.com>
Sent: Saturday, August 11, 2007 1:33 AM
Subject: Re: [Loadstone] No Signal and Signal Acquired transitions.


> 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
> process.
>
> 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
>> EMail: dave at mielke.cc | Canada  K2A 1H7   | if you're concerned about 
>> Hell.
>> http://FamilyRadio.com/                   | http://Mielke.cc/bible/
>> _______________________________________________
>> Loadstone mailing list
>> Loadstone at loadstone-gps.com
>> http://www.loadstone-gps.com/mailman/listinfo/loadstone
>>
> _______________________________________________
> Loadstone mailing list
> Loadstone at loadstone-gps.com
> http://www.loadstone-gps.com/mailman/listinfo/loadstone
> 



More information about the Loadstone mailing list