Wearable dead reckoning system for GPS-denied navigation
US10775175B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2019 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Jun 28, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30244
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A dead reckoning system for dismounted users is disclosed. The system uses a laser emitter to heat fixed points near the user. The points are ranged via LIDAR and imaged via thermal or IR imagers co-aligned with the laser emitter and LIDAR assembly (e.g., as a wearable personal system or a vehicle-based system). The system includes inertial sensors (e.g., accelerometers, gyrometers) to monitor attitude and motion trends of the system. Thermal images incorporating the heated points are captured at new user positions. The dead reckoning system includes a microcontroller for tracking distance and directional changes from one user position to the next by analyzing successive thermal images to determine changes in the position of the fixed heated points relative to the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.