[gps-talkusers] accuracy among trees
- From: "Michael May" <mikemay@xxxxxxxxxxxxxxxx>
- To: <gps-talkusers@xxxxxxxxxxxxx>
- Date: Wed, 20 Jun 2012 15:15:28 -0400
Hello list,
The GPS accuracy is so much better with the iBlue 747 Pro that we hardly
bring up accuracy questions like we used to. Certainly there are multi path
issues among tall buildings but we still get a position fix. It amazes me
sometimes how well it works in some buildings.
Most of my GPS use in the woods is in Northern California where you have
tall trees but mostly with pine needles and not leaves. I find that it takes
longer to acquire a position among these tall trees but eventually the GPS
comes through with 3 or 4 satellites. It is rare that I cannot get a
position fix at all.
I am wondering how true this is in other parts of the US or world where the
trees may be denser and with leaves instead of needles. Based on the physics
of GPS frequencies, leaves that are effectively 8 inches or larger would
potentially block GPS signals.
Anyone have wooded areas where they cannot get a GPS fix?
Mike
May, CEO Sendero Group
Developers of accessible GPS and distributors of technology for the blind
Office Phone: 888-757-6810, extension 101
Email: MikeMay@xxxxxxxxxxxxxxxx
Sendero web: http://www.senderogroup.com
General GPS Web: http://www.AccessibleGPS.com
Mike May Personal: http://www.CrashingThrough.com
Sendero Address: 1857 Glenmark Way, Roseville, CA 95747
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