Atom Strapdown: High Rate Phase Shift Calculation for Atom Interferometer Inertial Sensors

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Authors

  • Benjamin Tennstedt
  • Nicolai Weddig
  • Steffen Schön
  • Ashwin Rajagopalan
  • Sven Abend
  • Ernst M. Rasel
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Details

Original languageEnglish
Title of host publicationProceedings of the 35th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2022)
Pages1377-1391
Number of pages15
ISBN (electronic)9781713871361
Publication statusPublished - 2022
Event35th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS+ 2022 - Denver, United States
Duration: 19 Sept 202223 Sept 2022

Publication series

NameProceedings of the Satellite Division's International Technical Meeting
Volume2
ISSN (Print)2331-5911
ISSN (electronic)2331-5954

Abstract

In this paper, an alternative technique to estimate the response of a cold atom interferometer (CAI) is presented. Using data of a conventional inertial measurement unit and the common strapdown terminology, the position of the atom wave packet is tracked in a newly introduced sensor frame. This enables a hybridisation of both systems. The sensor frame allows for an easier mathematical description of the interferometer measurement and makes integration into higher-level navigation systems possible. Equations for a hybrid IMU/CAI system with several arbitrarily placed sensor frames are stated, as well as a compressed Multi-Axis model, following current developments in chip scale atom interferometry. The atom strapdown is compared with another common hybridisation technique which utilizes convolution of accelerometer data with the interferometer response function. The comparison is supported by real data. The dynamic terms resulting from the transformation of the IMU frame into the sensor frame of the CAI are evaluated in simulations and further discussed. Finally, the implications of the findings for future hybrid quantum navigation systems are stated.

ASJC Scopus subject areas

Cite this

Atom Strapdown: High Rate Phase Shift Calculation for Atom Interferometer Inertial Sensors. / Tennstedt, Benjamin; Weddig, Nicolai; Schön, Steffen et al.
Proceedings of the 35th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2022). 2022. p. 1377-1391 (Proceedings of the Satellite Division's International Technical Meeting; Vol. 2).

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Tennstedt, B, Weddig, N, Schön, S, Rajagopalan, A, Abend, S & Rasel, EM 2022, Atom Strapdown: High Rate Phase Shift Calculation for Atom Interferometer Inertial Sensors. in Proceedings of the 35th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2022). Proceedings of the Satellite Division's International Technical Meeting, vol. 2, pp. 1377-1391, 35th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS+ 2022, Denver, United States, 19 Sept 2022. https://doi.org/10.33012/2022.18321
Tennstedt, B., Weddig, N., Schön, S., Rajagopalan, A., Abend, S., & Rasel, E. M. (2022). Atom Strapdown: High Rate Phase Shift Calculation for Atom Interferometer Inertial Sensors. In Proceedings of the 35th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2022) (pp. 1377-1391). (Proceedings of the Satellite Division's International Technical Meeting; Vol. 2). https://doi.org/10.33012/2022.18321
Tennstedt B, Weddig N, Schön S, Rajagopalan A, Abend S, Rasel EM. Atom Strapdown: High Rate Phase Shift Calculation for Atom Interferometer Inertial Sensors. In Proceedings of the 35th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2022). 2022. p. 1377-1391. (Proceedings of the Satellite Division's International Technical Meeting). doi: 10.33012/2022.18321
Tennstedt, Benjamin ; Weddig, Nicolai ; Schön, Steffen et al. / Atom Strapdown : High Rate Phase Shift Calculation for Atom Interferometer Inertial Sensors. Proceedings of the 35th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2022). 2022. pp. 1377-1391 (Proceedings of the Satellite Division's International Technical Meeting).
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abstract = "In this paper, an alternative technique to estimate the response of a cold atom interferometer (CAI) is presented. Using data of a conventional inertial measurement unit and the common strapdown terminology, the position of the atom wave packet is tracked in a newly introduced sensor frame. This enables a hybridisation of both systems. The sensor frame allows for an easier mathematical description of the interferometer measurement and makes integration into higher-level navigation systems possible. Equations for a hybrid IMU/CAI system with several arbitrarily placed sensor frames are stated, as well as a compressed Multi-Axis model, following current developments in chip scale atom interferometry. The atom strapdown is compared with another common hybridisation technique which utilizes convolution of accelerometer data with the interferometer response function. The comparison is supported by real data. The dynamic terms resulting from the transformation of the IMU frame into the sensor frame of the CAI are evaluated in simulations and further discussed. Finally, the implications of the findings for future hybrid quantum navigation systems are stated.",
author = "Benjamin Tennstedt and Nicolai Weddig and Steffen Sch{\"o}n and Ashwin Rajagopalan and Sven Abend and Rasel, {Ernst M.}",
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