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| Subject: | RE: GISList: Re: Blue-tooth GPS with ArcPad?? |
| Date: |
05/01/2003 06:50:01 PM |
| From: |
Neil Havermale |
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I have been using the Socket Bluetooth GPS device for about two months.
BlueTooth is the only way to do PDA or laptop mobile navigation. You can
not believe how great it is to loose the power, antenna, and Communications
PDA tether cables. Each GPS charge needing about 30 minutes last about 5
hours in my experience to date, out lasting both the Compaq iPAQ3970 or one
of the newer Sony Clies with a Sony's Memory Stick Bluetooth device.
The Socket BT GPS is a very good 12-channel SiRf GPS unit. Expect in static
testing that it will readily achieve a 10 meter SA=OFF accruacy. It can do
far better as the SiRF chip set used is WAAS-able which can drive accuracy
in WAAS areas to three meters or less. The WAAS can be enabled by a
third-party configuration solution for the SiRF chip set via PocketPC
Bluetooth at http://www.gpsoz.com.au/bluetooth_crux_ce.htm.
Bluetooth delivered NMEA GPS records will simplify all sorts of PDA based
GIS and personal navigation tools. Socket's works well as serial device and
is easily configured once recognized.
My experience with Bluetooth so far places the Palm implementation far ahead
of the WinCE PocketPC. The only issue on the Clie and its 4.X PalmOS have
been running the batteries to exhaustion. In the WinCE environment
Bluetooth interruption easily jams the PocketCE to clock-lock needing
<reset> you will just have to get used to. (Its an attitude thing of
acceptance if you recall the resignation of <Ctrl><Alt><Del> solution to
similar shortfalls in other Microsoft OSs.)
Software wise, I use EzMAP from Trimble ($349) for my CE navigator which is
compatible with SHP and various types of background imagery
http://trimble.com/aggps_ezmap_specs.html. The EzMAP tool is a very
powerful for PDA navigation, scouting, sampling, layout, as well as a
general data logger.
I use GPSPlilot's Tracker ($39.95) in my SONY Clie NR70V
http://www.gpspilot.com/. Tracker, although almost too simplistic, (It just
works) has good GIS note taking and object creation. I have been a heads-up
feet-down map maker for over a decade and I use Tracker pretty much daily
for all sorts of notes and things to do in the garden, orchard, and around
town. In the US back-ground maps are "easy" and "cheap" to download. It
has a nifty freeware called Cartographer that registers, in a very smart
way, multiple scanned or maps image layers that can be zoomed to.
Topographer is another GPSPilot utility to create, modify, delete positional
databases between PC and PDA - points of interest, fishing spots, kids
friends homes, errands, delivery locations, and the like.
Hope this helps.
MidNight Mapper
Aka neil
-----Original Message-----
From: Clive.Swan@brent.gov.uk [mailto:Clive.Swan@brent.gov.uk]
Sent: Wednesday, April 30, 2003 10:27 PM
To: gislist@geocomm.com
Subject: GISList: Re: Blue-tooth GPS with ArcPad??
Hi
There are several blue-tooth GPS on the market, with GPS accuracy of less
than 10 meters. Has anyone compared the accuracy of these models working
with ArcPad on a Pocket PC?? Which models provides the best result??
Navman GPS 4400 (Bluetooth)
GPS Accuracy Position:
5.0 meters,
typical (95% probable)
Fortuna: GPSmart Bluetooth
<10 meters, 95% typical
EMTAC Bluetooth CRUX II / BTGPS GPS Receiver
10 meters RMS, 25 meter CEP, without
SA
From:
CLIVE SWAN
Principal GIS Analyst
Environmental Services Directorate
Brent Council
Tel) 020 8937 5332
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