Methods resolving the elevation of a tracked personnel or assets

US9671224B2 · kind B2 · utility

Assignee

• TRX SYSTEMS, INC. · US

Inventors

• John Karvounis · Bowie, US
• Jared Napora · Manchester, US
• Benjamin Funk · Hanover, US
• Dan Hakim · Silver Spring, US
• Christopher Giles · Frederick, US
• Carole Teolis · Glenn Dale, US

Key dates

• Filing date: Jun 12, 2013
• Grant date: Jun 6, 2017
• Expiry date: Mar 16, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G01C21/206
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Methods and systems are described for determining the elevation of tracked personnel or assets (trackees) that can take input from mounted sensors on each trackee (including barometric, inertial, magnetometer, radio frequency ranging and signal strength, light and GPS sensors), external constraints (including ranging constraints, feature constraints, and user corrections), and terrain elevation data. An example implementation of this method for determining elevation of persons on foot is described. But this method is not limited to computing elevation of personnel or to on foot movements.