Compensation of an optical air data system using inertial aiding

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...

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Bibliographische Detailangaben
Hauptverfasser:	Lodden, Grant Hamilton, Wiebold, Matthew
Format:	Patent
Sprache:	eng
Schlagworte:	AIRCRAFT ANALOGOUS ARRANGEMENTS USING OTHER WAVES ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT AVIATION COSMONAUTICS DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES EQUIPMENT FOR FITTING IN OR TO AIRCRAFT FLYING SUITS LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PARACHUTES PERFORMING OPERATIONS PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING TRANSPORTING
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Beschreibung
Zusammenfassung:	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.