Earth-Centered Inertial Frame

Author: Tianjiang Shuo

Website: https://cislunarspace.cn

Definition

Coordinate system with origin at Earth's center of mass, fundamental plane as Earth's equatorial plane, X-axis pointing to vernal equinox, K-axis pointing to North Pole. Also known as GCRF.

Application Value

Earth-Centered Inertial Frame plays an important role in orbital dynamics and attitude control, serving as a critical tool for analyzing spacecraft motion characteristics. Research on this concept enables optimization of orbit transfer schemes and improvement of control system performance.

  • Restricted Three-Body Problem
  • KAM Theorem
  • Hill Clohessy Wiltshire Equations
  • State Transition Function

References

  • Pesce 等 - 2023 - Modern spacecraft guidance, navigation, and control.
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Contributors: ouyangjiahong, Ou Yang Jiahong