Changes

Sonion T 20 AG telecoil used in hearing aids.]]

Sonion T 20 AG telecoil used in hearing aids.]]

[[File:6DOF_tracker_block_diagram.png|thumb|350px|6DOF tracking system block diagram]]

[[File:6DOF_tracker_block_diagram.png|thumb|350px|6DOF tracking system block diagram]]

An '''electromagnetic tracking system''' is a system that performs [[electromagnetic tracking]], which tracks an object in a space using [[electromagnet]]s. It can be used to track the position and orientation of a [[head-mounted display]]. It can also be used to track handheld control peripherals. Examples of electromagnetic tracking systems are the [[Polhemus Viper]] and the [[Razer Hydra]].

An '''electromagnetic tracking system''' is a system that performs [[electromagnetic tracking]], which tracks an object in a space using [[electromagnet]]s. It can be used to track the position and orientation of a [[head-mounted display]] and handheld control peripherals. Examples of electromagnetic tracking systems are the [[Polhemus Viper]] and the [[Razer Hydra]].

Electromagnetic tracking systems typically use three coils for the X, Y, and Z directions, in Industry Standard Coil Architecture, which is three orthogonal coils of wire, for example, in the [[Polhemus TX2]].

There is a base station and a receiver. The base station generates the magnetic field, and the receiver senses it. Commercial magnetic tracking systems usually cost thousands of dollars.

There is a base station and a receiver. The base station generates the magnetic field, and the receiver senses it.

Electromagnetic tracking systems typically use three coils for the X, Y, and Z directions, in Industry Standard Coil Architecture, which is three orthogonal coils of wire. An example of a transmitter or receiver in this architecture is the [[Polhemus TX2]]. Alternatively, [[trihedral source]]s can be used.<ref name="w251">{{cite web | title=Position and orientation measuring system having anti-distortion source configuration | website=Google Patents | date=1995-06-05 | url=https://patents.google.com/patent/US5640170A/ | access-date=2024-08-22}}</ref>

Electromagnetic tracking systems must be calibrated before they can be used.

Electromagnetic tracking systems must be calibrated before they can be used.

==Commercial systems==

==Commercial systems==