Week 4 Summary
The paper describes a navigation system, NavShoe, that tracts the location of a person with a device that is small enough to be tucked under the shoelaces of a shoe. A system like this would be extremely useful in many different applications such as emergency responders.
Two categories of experiments were done to test the accuracy of the NavShoe product, without position-aiding and with position aiding. The NavShoe performed well without position-aiding both indoors and outdoors with only moderate drift over a relatively small distance. For larger distances the NavShoe without position aiding would have significant drift. NavShoe with position-aiding allows for longer distances while minimizing the amount of drift over time.
In the future NavShoe can be used with head trackers or hand held devices to provide more accurate readings for position tracking. Most hand held devices use GPS for position tracing but GPS can be unreliable and go out at times. Incorporating the NavShoe with handheld devices can allow the device to continue position tracking even when GPS goes out.
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