Atom Strapdown: Toward Integrated Quantum Inertial Navigation Systems

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Benjamin Tennstedt
  • Ashwin Rajagopalan
  • Nicolai Ben Weddig
  • Sven Abend
  • Steffen Schön
  • Ernst Maria Rasel
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Details

Original languageEnglish
Article numbernavi.604
JournalNavigation, Journal of the Institute of Navigation
Volume70
Issue number4
Early online date3 Jul 2023
Publication statusPublished - 2023

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.

Keywords

    atom interferometry, hybridization, inertial navigation, sensor fusion

ASJC Scopus subject areas

Cite this

Atom Strapdown: Toward Integrated Quantum Inertial Navigation Systems. / Tennstedt, Benjamin; Rajagopalan, Ashwin; Weddig, Nicolai Ben et al.
In: Navigation, Journal of the Institute of Navigation, Vol. 70, No. 4, navi.604, 2023.

Research output: Contribution to journalArticleResearchpeer review

Tennstedt, B, Rajagopalan, A, Weddig, NB, Abend, S, Schön, S & Rasel, EM 2023, 'Atom Strapdown: Toward Integrated Quantum Inertial Navigation Systems', Navigation, Journal of the Institute of Navigation, vol. 70, no. 4, navi.604. https://doi.org/10.33012/navi.604
Tennstedt, B., Rajagopalan, A., Weddig, N. B., Abend, S., Schön, S., & Rasel, E. M. (2023). Atom Strapdown: Toward Integrated Quantum Inertial Navigation Systems. Navigation, Journal of the Institute of Navigation, 70(4), Article navi.604. https://doi.org/10.33012/navi.604
Tennstedt B, Rajagopalan A, Weddig NB, Abend S, Schön S, Rasel EM. Atom Strapdown: Toward Integrated Quantum Inertial Navigation Systems. Navigation, Journal of the Institute of Navigation. 2023;70(4):navi.604. Epub 2023 Jul 3. doi: 10.33012/navi.604
Tennstedt, Benjamin ; Rajagopalan, Ashwin ; Weddig, Nicolai Ben et al. / Atom Strapdown: Toward Integrated Quantum Inertial Navigation Systems. In: Navigation, Journal of the Institute of Navigation. 2023 ; Vol. 70, No. 4.
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