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c6jones720
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Cybercar - 2007/10/02 20:38 This thread discusses the Content article: Cybercar

This has to be worth looking at:

http://technology.newscientist.com/article/dn12714-magnetic-sensor-could-allow-pigeonstyle-gps.html

Sensors that utilise the magnetic field of the earth to determine where on the planet they are. This would work probably indoors like an electronic compass. This could have a profound effect on robotics when the technology is released.
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aibo_rescue
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Re:Cybercar - 2007/10/05 23:15 Here is an update to DARPA initiative ... Urban Grand Challenge:

The Urban Challenge will likely be much harder, however. Teams' robots must drive a 60-mile course on city streets and deal with much more external stimuli than on the desert terrain.

Link to article and pictures:
http://www.news.com/2300-11394_3-6211534-1.html
Best ... Richard
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aibo_rescue
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Re:Cybercar - 2007/10/06 03:25 Sensors that utilise the magnetic field of the earth to determine where on the planet they are. This would work probably indoors like an electronic compass. This could have a profound effect on robotics when the technology is released.

I would doubt if that has much use in robot localization. The magnetic field is constantly changing. The global changes are predictable but the local changes are not. There are some areas/region that the magnetic field goes wild (magnetic anomalies) and magnetic north or signature cannot be determined. Second problem is that (inexpensive) electronic means are less reliable and not as precise as old analogue means. I always take my old $10 SUUNTO magnetic compass in addition to my $200 "hiker" SUUNTO watch with electronic compass. You would be amazed how much "off the course" the electronic compass can be when compared with analog. The third concern is the house itself and human influence on local magnetic field: that metal tubes that serve as table legs, refrigerator in the kitchen, TV and speakers in the living room, a car in the garage next to family room ... and much more that can hardly be compensated for. I think a dead reckoning is easier and more predictable than the magnetic field based method can ever be. Just my thought ...
Best ... Richard
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