[gps-talkusers] Re: accuracy among trees
- From: Sarai Bucciarelli <sarai.bucciarelli@xxxxxxxxx>
- To: gps-talkusers@xxxxxxxxxxxxx
- Date: Thu, 21 Jun 2012 20:35:43 -0500
Hi:
Which iBlue 747 Pro do you have? Amazon has two choices, one is $99 and the
other is $79.
On Jun 20, 2012, at 2:15 PM, Michael May wrote:
> 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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