Localization determination for vehicle operation
US11112259B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 24, 2017 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | Oct 24, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2556/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Traversing a vehicle transportation network, by a vehicle, may include determining vehicle operational information, determining a metric location estimate for the vehicle using the vehicle operational information, determining operational environment information of a portion of the vehicle transportation network, determining a topological location estimate for the vehicle within the vehicle transportation network using the metric location estimate and the operational environment information, and traversing the vehicle transportation network based on the topological location estimate for the vehicle. The operational environment information can include sensor data of a portion of the vehicle transportation network that is observable to the vehicle. To determine the metric location estimate, a non-linear loss function with a Kalman filter may mitigate effects of un-modeled sensor error(s). Techniques using Hidden Markov Models and the Earth Mover's Distance to determine the topological location estimate are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.