Real-time refinement method of spacecraft star tracker alignment estimates
US8019544B2 · kind B2 · utility
16Cited by
9References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2005 |
| Grant date | Sep 13, 2011 |
| Priority date | — |
| Expiry date | Jan 1, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/7867
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of estimating the alignment of a star sensor (20) for a vehicle (12) includes generating star tracker data. A vehicle attitude and a star sensor attitude are determined in response to the star tracker data. A current alignment sample is generated in response to the vehicle attitude and the star sensor attitude. A current refined estimate alignment signal is generated in response to the current alignment sample and a previously refined estimate alignment signal via a vehicle on-board filter (38).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.