Pure-Inertial AHRS for Navigation of Accelerated Vehicles at High Latitudes

Pavol Malinak, Zdenek Kana, Milos Sotak, Radek Baranek, Tomas Vaispacher

Abstract: Engaged in European Union (EU) Clean Sky 2 Joint Undertaking (CS2 JU; Horizon 2020 program), Honeywell has matured, experimentally tested, and validated new inertial Attitude and Heading Reference System (AHRS) capable of navigation at high latitudes. Integrating information from inertial sensors (and magnetometer for aircraft heading estimation), reducing the impact of (external) aircraft acceleration, and decoupling the attitude and heading estimation process into separate cascaded filters, new AHRS can meets the required levels of navigation performance for next-generation aeronautics systems. As such, the system is suitable as a stand-alone back-up solution in GNSS-denied environments. Though developed primarily for the class of Large Passenger Aircraft (LPA) as a stand-alone back-up solution in GNSS-denied environments, the system can also be used on air-traffic/regional and business jet platforms. Experimental validation of the prototype has been performed within large flight-test campaign performed under the Clean Sky 2 Large Passenger Aircraft (LPA) Platform 3 project. The campaign targeted on business jets (Dassault Falcon 900EX) and consisted of more than 130 flight hours in total. Following a short overview of the pure-inertial AHRS itself and its integration within the Flight Test Bed (FTB) equipment, the flight test campaign is outlined. Then, performance of the system on both synthetic (simulated) and real-flight data is reviewed in terms of the achieved estimation accuracy.
Published in: Proceedings of the 34th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2021)
September 20 - 24, 2021
Union Station Hotel
St. Louis, Missouri
Pages: 1066 - 1078
Cite this article: Malinak, Pavol, Kana, Zdenek, Sotak, Milos, Baranek, Radek, Vaispacher, Tomas, "Pure-Inertial AHRS for Navigation of Accelerated Vehicles at High Latitudes," Proceedings of the 34th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2021), St. Louis, Missouri, September 2021, pp. 1066-1078. https://doi.org/10.33012/2021.18036
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