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[aprssig] Google Maps on Cell Phones

Curt, WE7U archer at eskimo.com
Tue Jan 8 17:30:42 UTC 2008


On Mon, 7 Jan 2008, Joel Maslak wrote:

> If he's using Loran (does that still exist?), celestrial navigation,
> cell phone tower loations, digipeater locations, etc, you might have
> a high precision but low accuracy location.  You shouldn't
> necessarily discard the low order digits but rather simply express
> the data you have with an uncertainty factor.

Kind of like we do in Xastir with Mic-E or NMEA positions if you
zoom way in:  You see a little white box with the station symbol at
one corner of the box.  The box shows where the station _might_
actually be based on the transmitted precision.  Transmit with more
precision and the box gets smaller.

--
Curt, WE7U: <www.eskimo.com/~archer/>     XASTIR: <www.xastir.org>
  "Lotto:  A tax on people who are bad at math." -- unknown
"Windows:  Microsoft's tax on computer illiterates." -- WE7U
The world DOES revolve around me:  I picked the coordinate system!




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