Calibration-free positioning method and system
US12031825B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2019 |
| Grant date | Jul 9, 2024 |
| Priority date | — |
| Expiry date | Oct 4, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0176
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided is a calibration-free positioning method and system. The positioning method includes: setting a positioning period, acquiring a first coordinate of a positioned object in a base station coordinate system at the end of one positioning period, performing an inertial navigation within the one positioning period to obtain a first inertial navigation result; controlling, within a next positioning period, the positioned object to move to obtain a second coordinate in the base station coordinate system at the end of the next positioning period, performing an inertial navigation on the positioned object within the positioning period to obtain a second inertial navigation result, and calculating displacement vectors in the base station coordinate system and in the inertial navigation coordinate system; calculating a rotation quaternion; transforming, through the rotation quaternion, a coordinate obtained by the inertial navigation to the base station coordinate system, output a position of the positioned object after transforming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.