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Hybrid inertial -laser scanning head tracking system for cockpit applications
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Hybrid inertial -laser scanning head tracking system for cockpit applications
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Dissertation
Hybrid inertial -laser scanning head tracking system for cockpit applications
2007
Overview
The operation and performance of the proposed hybrid inertial-laser scanning head tracking system is described. The unique laser-scanning tracking technology shares the same aperture or scanned optical beam with the visual display, Virtual Retinal Display (VRD). Our novel system generates two simultaneous in-phase scanning beams for display and tracking purposes. The VRD provides high brightness for a helmet mounted display, especially in the extreme environment of a military cockpit. The optical tracking system is capable of tracking with high accuracy. A linear accelerometer is being used to provide the high update rate for our hybrid tracking system that is necessary for the cockpit applications, where head movement can be extreme. Different algorithms were studied to optimally fuse/hybrid the data from the laser-scanning tracking system and the inertial tracking system. A method of prediction was also studied as a mean to compensate for the effect of the system latency. The proposed system was tested on conditions similar to those in the cockpit applications. This dissertation demonstrates that the proposed hybrid inertial-laser scanning head tracking system is capable of high accuracy, high update rate and low latency.
Publisher
ProQuest Dissertations & Theses
ISBN
054937552X, 9780549375524
