Article: Train spotting.(App Snaps)(Brief Article)

Fiber-optic gyros (FOGs) manufactured by KVH Industries, Inc., are playing a vital role in the development of a next-generation Positive Train Control (PTC) system intended to improve railway efficiency, reliability, and safety.

A critical element in any PTC system is precise knowledge of each train's position and speed. To that end, Lockheed Martin Corp. is developing a train location determination system that combines data from the GPS, a tachometer, a track database, MEMS accelerometers, and KVH E-Core 2000 FOGs.

These gyros use KVH's polarization-maintaining optical fiber and fiber components to provide precise rotational rate information by ...

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