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1. (WO2017184989) ULTRASONIC POSITION DETECTION SYSTEM

Pub. No.:    WO/2017/184989    International Application No.:    PCT/US2017/028863
Publication Date: Fri Oct 27 01:59:59 CEST 2017 International Filing Date: Sat Apr 22 01:59:59 CEST 2017
IPC: G01S 3/808
G01S 3/00
G01S 3/80
G01S 3/802
Applicants: FIDELITY TECHNOLOGIES CORPORATION
Inventors: CHAYKA, Stanley, J.
HUBER, Eric, A.
Title: ULTRASONIC POSITION DETECTION SYSTEM
Abstract:
Tracking systems have been successfully applied to immersive simulation systems and virtual environment training in which portable devices (i.e., hand-held military equipment) within the immersive simulation system are tracked using time-of-fiight recordings to triangulate each devices position. Until now, tracking systems have not used differential calculations to track these portable devices. The invention uses a single array of sensors mounted above the simulation area to communicate with small transmitters and emitters mounted on each portable device to generate position offsets for each portable device.