[MLB-WIRELESS] GPS & Mast

[Glen Murphy]

> GPS resolution is ~3 meters or so, iirc. I'm not sure how much accuracy
> depends on the amount of sat's you have locked on.

As a general rule of thumb, GPS vertical accuracy is half that your
horizontal accuracy at any given time.



----- Original Message -----
From: "James Robertson" <orlock at central.warehouse.net>
To: "Matt Pearce" <mattpearce at optushome.com.au>
Cc: "melbourne wireless" <melbwireless at wireless.org.au>
Sent: Wednesday, June 26, 2002 12:59 PM
Subject: Re: [MLB-WIRELESS] GPS & Mast


>
>
> IIRC, with 3 sat's locked on you can get your lat/long. With a 4th, you
> can get altitude as well. Newer GPS's will lock onto multiple sat's at
> once, decreasing tracking/lock on time.
>
> GPS resolution is ~3 meters or so, iirc. I'm not sure how much accuracy
> depends on the amount of sat's you have locked on.
>
> On Wed, 26 Jun 2002, Matt Pearce wrote:
>
> > I was wondering if GPS units come with altimiters that are sensitive to
about .5 metre's or so??  Also if someone has a GPS with an altimetre in it
would they we willing to come out to my house in Boronia for an hour or so
to help me work out the height I am going to need to put my antenna's onto
to try and get over a hill (I personally am bidding 20metre's).
> >
> > Could anyone also tell me where to look for an extendable antenna pole
that can go 20m + ??
> >
> > Matt.
> >
>
> --
>
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