From:
"Mike Teague" <yngwie@triax.com>
Sent: 1/24/2001 1:15:12 PM
To:
gpsstash@egroups.com
Cc:
Bcc:
Subject:

Re: [gpsstash] averaging a GPS position


the figure that the etrex gives is an EPE..

these might help..

an article on DOP: http://joe.mehaffey.com/dopnontech.htm

an article on EPE: http://joe.mehaffey.com/epenew.txt

and of course all you would ever want to know pretty much can be found at
http://joe.mehaffey.com/




Mike Teague - http://www.triax.com/yngwie



----- Original Message -----
From:
To:
Sent: Tuesday, January 23, 2001 8:04 PM
Subject: Re: [gpsstash] averaging a GPS position


> I agree with the need to consider the placing of a cache carefully.
> In some ways that is why I queried averaging, because someone
> looking for a cache is not going to get within a metre or so. Averaging
> may give one a false sense of accuracy.
>
> Obviously to get a good signal is important. But then also to remember
> that when a person homes in on the cache there is a good change
> they will only be within 5-10m. So the place of the cache should be
> good enough to allow them to do a systematic search within a 10 metre
> radius and find it. A hint may help here.
>
> The etrex gives a location accuracy on the satellite page.
> Is this a DOP?
> When placing a cache people should look at the accuracy given
> by the GPS device and then consider whether someone that distance
> away in any direction could find it.
>
> Karl.
>
>
> The gpsstash page
> http://www.geocaching.com
> The GPS Stash Hunt page.
> http://www.triax.com/~yngwie/gps.html
>
> GeoCache HQ
> http://www.braveheart.com.au
> GPS Stash Hunt FAQ :
> http://www.triax.com/~yngwie/stashfaq.txt
> To unsubscribe from this group, send an email to:
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>
>