EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Analytical developments on 6C computation inspired by navigation algorithms

Baptiste Pinot1, Frederic Guattari2, Joachin Honthaas2, and David Mimoun1
Baptiste Pinot et al.
  • 1ISAE SUPAERO, Toulouse, France
  • 2iXblue, Saint-Germain en Laye, France

The deployment of portable broadband rotational ground motion sensors in the field marks the beginning of 6 degrees of freedom simultaneous and co-located measurements in seismology, after decades of ground motion instrumentation measuring only translations. Regarding the computation of this new kind of data-set, there are obviously some analysis technics to inherit from navigation.

Hence, now seismology has also to solve the 6 equations system with 6 unknowns of dynamic motion. In a navigation system, it is computed real-time in onboard electronics, taking into account centrifugal forces, non-commutativity of rotations, and compensation of projection of gravity in accelerometers frame and Earth rotation rate in gyroscopes frame. For the moment, attempts at handling the merging of 6 components in seismology has remained mostly empirical, using cross-correlation maximization and other optimization methods.

In this study, we developed the analytical framework for seismological 6-C computation methods, derived from navigation-inspired methods to establish a stronger link between these algorithm expertises.

How to cite: Pinot, B., Guattari, F., Honthaas, J., and Mimoun, D.: Analytical developments on 6C computation inspired by navigation algorithms, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-13355,, 2022.


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