Method, apparatus and computer program for azimuth determination e.g. for autonomous navigation applications
US7421340B2 · kind B2 · utility
16Cited by
7References
90Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2005 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | May 21, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/1654
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
For an observer equipped with a first azimuth data source responsive to a magnetic field to deliver first azimuth data, such as a compass, and with a second azimuth data source delivering second azimuth data and which is independent of magnetic fields, such as a gyroscope. The azimuth is determined by: In an embodiment, the choices of azimuth data source and events such as magnetic disturbances, sensor updates, types of trajectory deduced, are stored as a history sequence over successive time windows, by analogy with a DNA sequence, and is exploited for optimizing azimuth or navigation results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.