Crane, Matthew wrote:
So what would one do with a cell phone with an embedded gps assisted
inertial guidance system? Tape a rocket motor to the back for a new way
to destroy the iPhone?
To be boringly pedantic.
An inertial guidance system is not possible with simply a 3 axis
accelerometer.
You need at least three angular rate sensors to pick up the roll, pitch,
and yaw. (which way it points)
In practice, semiconductor inertial guidance at the moment isn't
suitable for more than a few seconds at a time.
The drift rate is _horrible_ - a kilometer position uncertainty after 3
minutes, 400Km in an hour.
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