Sun-Earth Rotating Frame
Author: Tianjiang Shuo
Website: https://cislunarspace.cn
Definition
A rotating coordinate frame centered at the Sun-Earth barycenter, with the x-axis pointing from the Sun to Earth, the y-axis along the orbital motion direction, and the z-axis perpendicular to the ecliptic plane. Both the Sun and Earth remain stationary in this frame. The equations of motion include Coriolis and centrifugal terms. In the BCP model, this frame describes spacecraft motion from Earth departure to the lunar flyby segment and serves as the primary reference frame for designing low-energy lunar trajectories with flybys.
Application Value
在进行轨道转移设计时，This概念有助于评估转移代价和飞行时间，为任务方案比选provides定量依据。结合全局搜索算法，可找到多族解和帕累托前沿，指导轨道设计决策。
Related Concepts
- 地心天体参考框架（Geocentric Celestial Reference Frame）
- 运行轨道库（Operational Orbit Library）
- 月球自由返回轨道（Lunar Free-Return Orbit, LFO）
- 临界轨道（Critical Orbit）
References
- 韦炳威和李银山, 2017
- Spreen 2021