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| Subject: | Re: [gislist] How about tracking a group of Hikers in real-time? |
| Date: |
07/05/2005 04:15:01 PM |
| From: |
Bill Diaz |
|
|
Mark,
See below:
>-----Original Message-----
>From: gislist-bounces@lists.geocomm.com
>[mailto:gislist-bounces@lists.geocomm.com] On Behalf Of Mark Martens
>Sent: Tuesday, July 05, 2005 12:26
>To: gislist@lists.geocomm.com
>Subject: [gislist] How about tracking a group of Hikers in real-time?
>
>
>Bill:
>Sounds like you know a lot about this space. I am interested
>in finding out what it would take to build a system to track a
>group of hikers over a wide area, say like a 24-hour
>eco-challenge. I have the software that wil place them in a
>virtual location, I just need the GPS transmitter receiver and
>of things.
>Do you think you could point me towards some useful
>information sources?
Your biggest challenge would be to design a system which would provide
coverage over the entire area.
Hiker Equipment considerations:
Must be low weight, low volume.
Must have battery capacity for more than 24 hours.
Must be water proof.
Garmin (http://www.garmin.com/products/rino130/) has a combination radio and
GPS that may be adapted to this use. However there are several problems and
limitations. Battery life is 14-15 hours maximum, depending on usage.
Positions are sent by pressing a button on the radio, though the Rino130 has
a polling function according to the web site.
Range is limited to ~ 2 miles or so in flat terrain. Could be less in hilly
terrain or in urban canyons.
The next problem is getting the data from a radio to a PC. I do recall a
hack being devised, but don't recall the details. I can get the info if
needed.
You may need several radio / PC's along the route to capture ID and
location. The PC's may need to be networked wirlessly to allow progress
data to be sent to the central collection point for further processing.
HTH,
Bill
>Mark
>
>gislist-request@lists.geocomm.com wrote:
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>Today's Topics:
>
>1. realtime vehicle tracking (Simmonds, Ashley (DTEI))
>2. Re: realtime vehicle tracking (Bill Diaz)
>3. Calculating a string as a number? (Matt Bachman)
>4. Re: Calculating a string as a number? (Zach Travis)
>
>
>----------------------------------------------------------------------
>
>Message: 1
>Date: Tue, 5 Jul 2005 18:27:50 +0930
>From: "Simmonds, Ashley (DTEI)"
>Subject: [gislist] realtime vehicle tracking
>To: gislist@lists.thinkburst.com
>Message-ID:
><9D1D8F15E14032438253BB94449EE25703686A08@sagemsg0005.sagemsmrd
>01.sa.gov.au>
>
>Content-Type: text/plain
>
>sure this has been discussed before. could someone point some
>fingers at
>where some step-by-steps in this arena might be located...
>
>i've been researching APRS a bit, and am already good with GIS
>and stuff,
>but i need to get a good handle on how to transmit a GPS
>signal from a fleet
>of cars, and recieve that signal into my application.
>
>danke
>ash simmonds
>
>
>------------------------------
>
>Message: 2
>Date: Tue, 5 Jul 2005 07:55:50 -0500
>From: "Bill Diaz"
>Subject: Re: [gislist] realtime vehicle tracking
>To: "'Simmonds, Ashley (DTEI)'" ,
>
>Message-ID: <030301c58160$dec9ae50$6301a8c0@Dell3G>
>Content-Type: text/plain: charset="us-ascii"
>
>Ash,
>See below:
>
>>-----Original Message-----
>>From: gislist-bounces@lists.geocomm.com
>>[mailto:gislist-bounces@lists.geocomm.com] On Behalf Of
>>Simmonds, Ashley (DTEI)
>>Sent: Tuesday, July 05, 2005 03:58
>>To: gislist@lists.thinkburst.com
>>Subject: [gislist] realtime vehicle tracking
>>
>
>>sure this has been discussed before. could someone point some
>>fingers at
>>where some step-by-steps in this arena might be located...
>>
>>i've been researching APRS a bit, and am already good with GIS
>>and stuff,
>>but i need to get a good handle on how to transmit a GPS
>>signal from a fleet
>>of cars, and recieve that signal into my application.
>
>Step by step information for commercial AVL system design is
>hard to come
>by, since many companies use proprietary systems and methods.
>Methods of
>transmitting and receiving a signal from a fleet
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