M.Yu. Tkhorenko
FSBSI “V.A. Trapeznikov Institute of Control Sciences of Russian Academy of Sciences”, Moscow, Russia;
tkhorenkom@mail.ru
Al’manac of Modern Metrology № 1 (41) 2025, pages 65–70
Abstract. It is well-known that measurements of various physical fields could be used as navigation aids for inertial systems even in situations where reception of signals from satellite navigation systems is impossible. The paper considers the algorithms for navigation systems corrected with the help of magnetic measurements. The EMM2017 geomagnetic model based on spherical harmonics as well as the EMAG2v3 model, which use the definition of the anomalous field at grid nodes, are considered. The algorithm of field continuation for grid models is given. The algorithm of the integrated magneto-inertial navigation system is briefly described. Finally, numerical simulations show that the use of the EMAG2v3 model results in some improvement in navigation accuracy compared to the EMM2017 model.
Keywords: integrated navigation system, EMM2017, EMAG2v3.
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