Inertial transformation matrix generator
US5001647A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1989 |
| Grant date | Mar 19, 1991 |
| Priority date | — |
| Expiry date | Aug 31, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/188
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An inertial transformation matrix generator generates a succession of Euler transformation matrices in inertial coordinates, and is useful for converting to inertial coordinates the responses of a sensor hard mounted on the hull of a craft (e.g., an aircraft). First, second and third rate-sensing gyros located proximately to said sensor are strapped down to the craft hull, and are oriented to sense the motion of the craft hull in three mutually orthogonal directions, for providing respective output signals indicative of components of craft hull motion in each of those three mutually orthogonal directions. The output signals of the gyros are digitized, and based on these digital signals successive incremental Euler transformation matrices are generated. Each successive incremental Euler transformation matrix and a respective other matrix are multiplied together to generate a respective product matrix, said other matrix initially being a initialization matrix and thereafter being the previously calculated Euler transformation matrix. Each successive current Euler transformation matrix is formed from each successive product matrix, which is done in preferred embodiments of the inventi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.