Error estimation method, motion analysis method, error estimation apparatus, and program
US10288746B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2015 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | Dec 3, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed are an error estimation method capable of reducing a processing load, and estimating errors of indexes indicating a state of a moving object with high accuracy by using a signal from a positioning satellite. In one aspect, the error estimation method includes calculating a coordinate transformation matrix between a first coordinate system with a first sensor mounted on a moving object as a reference and a second coordinate system with the moving object as a reference, at a predetermined timing in a cycle of, converting one of an azimuth angle of the moving object based on a detection result in the first sensor and an azimuth angle of the moving object based on a detection result in the second sensor by using the coordinate transformation matrix in a case where the detection result in the second sensor receiving a signal from a positioning satellite is obtained, and estimating errors of indexes indicating a state of the moving object by using a difference between the converted azimuth angle and the other azimuth angle at the predetermined timing after a timing at which the detection result in the second sensor is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.