Compensation of an optical air data system using inertial aiding
US10527724B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2017 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Jul 10, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/88
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An air data system comprises an optical air data sensor onboard a vehicle, and includes an optical transceiver at a first location that is spaced apart from a second location on the vehicle corresponding to the vehicle center of gravity. The optical transceiver has at least one line-of-sight that is fixed relative to body axes of the vehicle, transmits light along the line-of-sight into an external interaction air region, and collects a scattered portion of the transmitted light. The system also includes onboard inertial sensors configured to measure rotation rates of the vehicle and generate rotation rate data. An onboard processor communicates with the air data sensor and the inertial sensors. The processor computes at least one line-of-sight velocity based on the collected scattered portion of the transmitted light, corrects the line-of-sight velocity for rotation rate induced bias, and computes air data parameters based on the corrected line-of-sight velocity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.