gyroscopyГироскопия и навигацияGiroskopiya i Navigatsiya0869-70352075-0927AO «Концерн «ЦНИИ «Электроприбор»10.17285/0869-7035.0078gyroscopy-182Research ArticleСтатьиПовышение точности инерциальной навигации с использованием интерферометров на холодных атомахImproved Inertial Navigation with Cold Atom Interferometryhttps://orcid.org/0000-0003-4362-0667ТеннштедтБ.TennstedtВ.

Теннштедт Беньямин. Магистр, научный сотрудник

https://orcid.org/0000-0001-7401-936XВеддигН.WeddigN.

Веддиг Николай. Магистр

https://orcid.org/0000-0002-5042-6742ШёнШ.SchoenS.

Шён Штеффен. Доктор технических наук, профессор.

Институт геодезии, Университет им. Лейбница (Ганновер, Германия). РоссияInstitut für Erdmessung, Leibniz Universität Hannover, Hanover, GermanyRussian FederationИнститут геодезии, Институт спутниковой геодезии и инерциальных измерений Немецкого аэрокосмического центра, Университет им. Лейбница (Ганновер, Германия)РоссияInstitut für Erdmessung, DLR Institute for Satellite Geodesy and Inertial Sensing (DLR-SI) Leibniz Universität HannoverRussian FederationИнститут геодезии, Университет им. Лейбница (Ганновер, Германия)РоссияInstitut für Erdmessung, Leibniz Universität HannoverRussian Federation2021221020252942245Copyright © Теннштедт Б., Веддиг Н., Шён Ш., 20252025Теннштедт Б., Веддиг Н., Шён Ш.Tennstedt В., Weddig N., Schoen S.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.gyroscopy.ru/jour/article/view/182

В статье обсуждается возможность применения в инерциальной навигации интерферометров на холодных атомах. Представлены погрешности этого нового типа датчиков, а также один из методов оперативного оценивания различных погрешностей формирования его выходного сигнала. Выводится и анализируется структура обобщенного фильтра Калмана, в котором данные атомного интерферометра используются в качестве измерениядля коррекции систематических погрешностей традиционного инерциального измерительного модуля, что повышает точность работы бесплатформенной системы любого подвижного объекта. Повышение точности исследуется аналитически на основе установившихся дисперсий фильтра, а также посредством моделирования для околоземных спутников. Продемонстрирована коррекция погрешностей грубого инерциального измерительного модуля в процессе лабораторного эксперимента при имитации атомного интерферометра датчиком более высокой точности. Поскольку применение обсуждаемого прибора в качестве гироскопа, как ниже отмечается в статье, ограничено, предложенная схема обеспечивает возможность работы атомного интерферометра в качестве датчика с шестью степенями свободы – как трехосного акселерометра и трехосного датчика угловой скорости.

This article discusses chances and challenges of using cold atom interferometers in inertial navigation. The error characteristics of the novel sensor are presented, as well as one option for an online estimation of the different readout errors. An extended Kalman filter framework is derived and analysed which uses the readout of the atom interferometer as observation in order to correct several systematic errors of a conventional IMU, allowing for an improved strapdown calculation in an arbitrary target system. The performance gain is discussed analytically based on the steady state variances of the filter, as well as on the example of a simulated scenario for Earth orbit satellites. The correction of the conventional IMU errors is further demonstrated in an experiment under laboratory conditions with a higher class sensor emulating an atom interferometer. While the application of the novel technology as a gyroscope is still limited, as pointed out in the paper, the presented framework yields options for a full six degree of freedom operation of the atom interferometer.

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The authors declare that there are no conflicts of interest present.