Methods for resolving a location of tracked personnel or assets based on elevation or terrain constraints

US10627230B1 · kind B1 · utility

Assignee

• TRX SYSTEMS, INC. · US

Inventors

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

Key dates

• Filing date: Aug 28, 2019
• Grant date: Apr 21, 2020
• Expiry date: Aug 28, 2039

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.