2009/8/10 John Smith delta_foxt...@yahoo.com:
I didn't record PDOP information and
such, but are there any solutions to
record decent GPS traces on trails under forest canopy data
collection other
than a high end professional GPS datalogger?
Not all data loggers are the same some have a
--- On Mon, 10/8/09, Martin Koppenhoefer dieterdre...@gmail.com wrote:
Yes, if you have some time it will be an option to wait for
the leaves
falling in autumn (seriously).
What if they are evergreen and don't loose their leaves in autumn? :)
You might be able to use sat overlays to estimate the true path.
won't be more precise though (if you really mean sat and not aerial
photo). In the end you would be tracing from aerial and use the track
just as an reminder.
For this case, I checked with the Yahoo imagery, and the canopy
I've done some rain-forest hiking, and I've noticed similar results.
If you really want to see some wandering tracks, try hiking along the
base of some cliffs, in dense forest.
I have noticed that the errors do seems to be less the faster I'm
moving. If I stand in one place for a while, the path
--
From: Stephen Hope slh...@gmail.com
I've done some rain-forest hiking, and I've noticed similar results.
If you really want to see some wandering tracks, try hiking along the
base of some cliffs, in dense forest.
The area I was in was in a
Stephen Hope wrote:
I've done some rain-forest hiking, and I've noticed similar results.
If you really want to see some wandering tracks, try hiking along the
base of some cliffs, in dense forest.
I have noticed that the errors do seems to be less the faster I'm
moving. If I stand in one
My Garmin eTrex HCx makes reasonable tracks under forest cover,
although the tracks are certainly worse under forest than under a
clear
sky. It's not the cheapest GPS unit you can get, but it's reasonably
priced and it's a great navigator to enjoy both OSM and commercial
maps
on
On Monday 10 August 2009, Apollinaris Schoell wrote:
compared to a SiRF III powered the eTrex is pretty lame in accuracy.
but it uses less power and runs twice as long on a set of batteries
You're thinking of an old eTrex. The new eTrexes (ones with an H in the name)
have high sensitivity
Garmin calls it high sensitivity but thats marketing Maybe better than
very old Garmin devices but much worse compared to a SiRF III
I have a new Hcx and compared multiple times.
Only 60, Oregon, Colorado use a SiRF III and they are much better in
accuracy but drain batteries like crazy.
On Mon, Aug 10, 2009 at 12:40 PM, Apollinaris Schoell ascho...@gmail.comwrote:
Garmin calls it high sensitivity but thats marketing Maybe better
than very old Garmin devices but much worse compared to a SiRF III
I have a new Hcx and compared multiple times.
Only 60, Oregon, Colorado use
On Tue, 11 Aug 2009, Apollinaris Schoell wrote:
compared to a SiRF III powered the eTrex is pretty lame in accuracy.
but it uses less power and runs twice as long on a set of batteries
ok, so I'm in the rich guys list.
I have an older etrex, the MSO has the newer etrex with the more accurate
On Mon, Aug 10, 2009 at 4:20 PM, Liz ed...@billiau.net wrote:
On Tue, 11 Aug 2009, Apollinaris Schoell wrote:
compared to a SiRF III powered the eTrex is pretty lame in accuracy.
but it uses less power and runs twice as long on a set of batteries
ok, so I'm in the rich guys list.
not yet,
I'm using netbook with just your average $30 GPS dongle to collect data.
Today I took a 5 mile out-and back hike under dense forest canopy. The GPX
traces for the same trail out and back are separated by as much as 100
meters.
I didn't record PDOP information and such, but are there any
--- On Sun, 9/8/09, Mike N. nice...@att.net wrote:
I didn't record PDOP information and
such, but are there any solutions to
record decent GPS traces on trails under forest canopy data
collection other
than a high end professional GPS datalogger?
If a phone network and the phone
Over last week I've noticed that the accuracy reading on my ETrex has briefly
gone down to 10ft a few times. Before last Saturday the best was 16ft. Today
I saw 9ft briefly. Anyone else seen this or know what's going on?
cheers, Chris
Chris Hill wrote:
Over last week I've noticed that the accuracy reading on my ETrex has briefly
gone down to 10ft a few times. Before last Saturday the best was 16ft.
Today I saw 9ft briefly. Anyone else seen this or know what's going on?
I've noticed I've been getting WAAS signals a lot
Chris Hill wrote:
Sent: 18 April 2008 4:24 PM
To: Talk OSM
Subject: [OSM-talk] GPS accuracy
Over last week I've noticed that the accuracy reading on my ETrex has
briefly gone down to 10ft a few times. Before last Saturday the best was
16ft. Today I saw 9ft briefly. Anyone else seen
On Fri, Apr 18, 2008 at 9:05 AM, Jon Stockill [EMAIL PROTECTED] wrote:
Chris Hill wrote:
Over last week I've noticed that the accuracy reading on my ETrex has
briefly gone down to 10ft a few times. Before last Saturday the best was
16ft. Today I saw 9ft briefly. Anyone else seen this or
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