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Geek Culture / GPS Alternatives

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AlexI
20
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Joined: 31st Dec 2004
Location: UK
Posted: 21st Dec 2009 21:10
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Hi,
Does anyone know any decent alternatives to GPS?

I am trying to track a number of people in quite a large room for a simulation. I have tried GPS but its not sensitive enough. I did think of using a number of IR cameras with IR LED's and use that but the room has lots of obstacles so it would require lots of cameras fitted which wouldn't really work. Also I wouldn't be able to distinguish between the targets.

Any ideas?

Thanks,
Alex


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NeX the Fairly Fast Ferret
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Location: The Fifth Plane of Oblivion
Posted: 21st Dec 2009 21:13 Edited at: 21st Dec 2009 21:13
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Do you need to be able to identify the individual objects transversing the room or will just a big pile of tracked blobs do? What shape is the room? Is it tall enough that a camera could be mounted on the ceiling and see everything? How is it lit?

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AlexI
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Location: UK
Posted: 21st Dec 2009 21:17 Edited at: 21st Dec 2009 21:17
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Basically I need the X, Y, Z positions of about 6 people in the room. The room is well lit. The positions must be very accurate. The room contains 3 sub rooms.


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jeffhuys
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Joined: 24th May 2006
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Posted: 22nd Dec 2009 00:27
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There's a system called LPS, Local Positioning System.
Look it up

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Phaelax
DBPro Master
22
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Joined: 16th Apr 2003
Location: Metropia
Posted: 22nd Dec 2009 04:37
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Quote: "Does anyone know any decent alternatives to GPS? "


a map


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lazerus
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Posted: 23rd Dec 2009 01:48
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Quote: "a map"


lol, any specifics on this project?


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Kravenwolf
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Location: Silent Hill
Posted: 23rd Dec 2009 04:58 Edited at: 23rd Dec 2009 04:59
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Quote: "I am trying to track a number of people in quite a large room for a simulation"
.
Sonar?

Kravenwolf

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Grog Grueslayer
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19
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Joined: 30th May 2005
Playing: Green Hell
Posted: 23rd Dec 2009 22:42
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RFID tags on everybody and 3 scanners in different places in the room for triangulation?

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AlexI
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Location: UK
Posted: 24th Dec 2009 02:32
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What sort of range can you get on RFID? I thought that was only close proximity stuff.


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Phaelax
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Location: Metropia
Posted: 25th Dec 2009 09:47
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On average, about 40 ft, but latest RFID chips could reach over 100ft depending on the density of the surrounding environment. But typical real-life scenarios would be between 40 and 60 ft.

And no I will not be implanted with an RFID tag.


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Grog Grueslayer
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Playing: Green Hell
Posted: 25th Dec 2009 11:40
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Quote: "And no I will not be implanted with an RFID tag."


Good choice... I too would like to avoid implanting the mark of the beast.

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AlexI
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Joined: 31st Dec 2004
Location: UK
Posted: 25th Dec 2009 16:13 Edited at: 25th Dec 2009 17:39
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Where can I buy 3 long range RFID readers? All the ones I look at are for about 1 meter or less.
Thanks

Edit:
This looks what I want: http://www.rfid-radar.com/introduc.html though it is only 0.5meters accurate
Edit: Lots of good stuff here to http://www.rfidtoys.net/forum/forum_posts.asp?TID=139&PN=1&TPN=5


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PAGAN_old
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Joined: 28th Jan 2006
Location: Capital of the Evil Empire
Posted: 26th Dec 2009 01:43
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There is a russian system called GLANAS which is a gps alternative, not very popular yet but its still new hopefully it will become big in the next few years, they are promising it to be better than GPS.

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