Skipping filter for inertially augmented landing system
US6549829B1 · kind B1 · utility
22Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2001 |
| Grant date | Apr 15, 2003 |
| Priority date | — |
| Expiry date | Oct 31, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/41
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present method and apparatus consists of storing past values of estimated IRU error and using these past values to update the coasting filter when switching from GPS to inertial mode. Through the storage of past IRU error estimates, it is possible to avoid misdirected guidance from an erroneous GPS signal. The MMR and ground station can require up to 6 seconds to identify a failed GLS signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.