Atom Strapdown: Toward Integrated Quantum Inertial Navigation Systems

verfasst von
Benjamin Tennstedt, Ashwin Rajagopalan, Nicolai Ben Weddig, Sven Abend, Steffen Schön, Ernst Maria Rasel
Abstract

We present an alternative technique for estimating the response of a cold atom interferometer (CAI). Using data from a conventional inertial measurement unit (IMU) and common strapdown terminology, the position of the atom wave packet is tracked in a newly introduced sensor frame, enabling hybridization of both systems in terms of acceleration and angular rate measurements. The sensor frame allows for an easier mathematical description of the CAI measurement and integration into higher-level navigation systems. The dynamic terms resulting from the transformation of the IMU frame into the CAI sensor frame are evaluated in simulations. The implementation of the method as a prediction model in an extended Kalman filter is explained and demonstrated in realistic simulations, showing improvements of over two orders of magnitude with respect to the conventional IMU strapdown solution. Finally, the implications of these findings for future hybrid quantum navigation systems are discussed.

Organisationseinheit(en)
Institut für Erdmessung
Institut für Quantenoptik
Typ
Artikel
Journal
Navigation, Journal of the Institute of Navigation
Band
70
ISSN
0028-1522
Publikationsdatum
2023
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Luft- und Raumfahrttechnik, Elektrotechnik und Elektronik
Elektronische Version(en)
https://doi.org/10.33012/navi.604 (Zugang: Offen)
 

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