[gps-talkusers] Re: GPS FRUSTRATIONS

  • From: "Paul Henrichsen" <paulh52@xxxxxxxxxxx>
  • To: <gps-talkusers@xxxxxxxxxxxxx>
  • Date: Thu, 17 Jan 2008 16:50:41 -0800

Thanks, Charles. I just thought my bn was haunted. I'm just sitting
stationary on the porch and the thing is going off intermittently<grin>.


Paul Henrichsen
paulh52@xxxxxxxxxxx
Kurzweil 1000 Technical Support Engineer
(800) 894-5374
Press 5 then 2
or: (888) 995-9905

-----Original Message-----
From: gps-talkusers-bounce@xxxxxxxxxxxxx
[mailto:gps-talkusers-bounce@xxxxxxxxxxxxx] On Behalf Of Charles LaPierre
Sent: Wednesday, January 16, 2008 4:38 PM
To: gps-talkusers@xxxxxxxxxxxxx
Subject: [gps-talkusers] Re: GPS FRUSTRATIONS 

Hello Paul,
What you have experienced is called GPS drift.  What is happening is 
that the gps thinks you are moving around even though you are 
stationary.  That is why we tell you your estimated accuracy +- x 
number of feet and there for that means you can be + 30 feet ahead or 
- 30 feet behind, actually anywhere within a 30 feet radius circle 
could be your "real" location.   The Sendero GPS software trys to 
hide most of this by figuring out what is drift and what is real 
movement but when all of a sudden the GPS receiver jumps 20 feet 
ahead with a velocity of 5 or 6 miles per hour we have to belive the 
GPS receiver and then you get these false readings you are 
experiencing.  You definitely get more of these when inside a 
building with the more sensitive GPS receivers out now-a-days but it 
still can happen under idea circumstances.

Charles.

At 04:17 PM 1/16/2008, you wrote:
>I was sitting on my front porch this morning with my bn in my lap 
>and connected to the gps with my new Hollux 1000. As I sat there, I 
>was told that my home was actually a ways behind me, but more 
>interestingly, the bn kept giving me information at random about how 
>I was traveling  and telling me about the closest street even though 
>I wasn't moving.
>I'd never seen it just put out random information before like that.
>I had six satellites.
>
>
>Paul Henrichsen
><mailto:paulh52@xxxxxxxxxxx>paulh52@xxxxxxxxxxx
>
>
>
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>signature database 2799 (20080116) __________
>
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><http://www.eset.com>http://www.eset.com

Charles M. La Pierre CTO
Sendero Group, LLC

Lat. 37 15' 25" N  Lon: 121 53' 04" W

 

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database 2802 (20080117) __________

The message was checked by ESET Smart Security.

http://www.eset.com
 
 

__________ Information from ESET Smart Security, version of virus signature
database 2803 (20080117) __________

The message was checked by ESET Smart Security.

http://www.eset.com
 


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