Polhemus PATRIOT is a cost-effective solution for 6 Degree-Of-Freedom (DOF) tracking and 3D digitizing. Patriot can accommodate a wide array of indoor applications such as head tracking, biomechanical analysis and computer graphics to cursor control and stereotaxic localization. PATRIOT includes a system electronics unit (SEU), a power supply, one sensor and one source. However, it is possible to expand the system’s capabilities simply by adding an additional sensor or an optional stylus. Measuring in at only 6.75 by 6.25 by 1.75 inches (LWH), the electronics unit is compact for easy installation in any environment. PATRIOT interfaces with the host computer via RS-232 or USB 1.1 and it's fully compatible with Windows® XP, Windows 2000 and Linux®. The source and sensor contain electromagnetic coils enclosed in plastic shells. The source emits magnetic fields, which are detected by the sensor. The sensor’s position and orientation are precisely measured as it is moved. Because the sensor is completely passive, it's safe for use in any application.
PATRIOT provides dynamic, real-time measurements of position (X, Y and Z Cartesian coordinates) and orientation (azimuth, elevation and roll). PATRIOT can update data continuously, discretely (point by point), or incrementally. With the optional stylus, you can trace the outline of a physical object or collect polygon facets and get pinpoint accuracy of unlimited X, Y and Z data points. PATRIOT offers low latency and high stability to ensure precise, uninterrupted tracking at all times. It boasts an update rate of 60Hz per sensor and has a range of five feet, resolution of 0.0015 inch and 0.1 degree, and static accuracy of 0.1 inch RMS for the X, Y, Z position and .75 degrees RMS for orientation. Latency is less than 18 milliseconds for both sensors simultaneously.
More information:
http://www.polhemus.com/?page=Motion_Patriot
More information:
http://www.polhemus.com/?page=Motion_Patriot