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== AC magnetic tracking ==
== AC magnetic tracking ==
AC magnetic tracking uses fluctuating magnetic fields generated by a source and picked up by a sensor. The sensor can be about 2mm thick.
AC magnetic tracking uses fluctuating magnetic fields generated by a source and picked up by a sensor. The sensor can be about 2mm thick.
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The fastest electromagnetic tracking system in the world is the Polhemus Viper 16, which tracks up to 960hz.