Barycentric Inertial Frame
Author: Tianjiang Shuo
Website: https://cislunarspace.cn
Definition
An inertial reference frame centered at the Sun-Earth barycenter. Formed by freezing the barycentric rotating frame at the initial epoch: z-axis along the ecliptic normal, x-axis pointing from Sun to Earth, y-axis determined by the right-hand rule. In this frame, the spacecraft position is on the order of 10^8 km, with a much larger variation range than the barycentric rotating frame, resulting in lower navigation filter accuracy.
Application Value
An inertial reference frame centered at the Sun-Earth barycenter. Formed by freezing the barycentric rotating frame at the initial epoch: z-axis along the ecliptic normal, x-axis pointing from Sun to Earth, y-axis determined by the right-hand rule. In this frame, the spacecraft position is on the order of 10^8 km, with a much larger variation range than the barycentric rotating frame, resulting in lower navigation filter accuracy.
Related Concepts
- Simplified Kinematic Orbit Determination
- Delayed Measurement Fusion
- Proximity Navigation
- Velocity-to-be-Gained Guidance
References
- 赵书阁 等 - 2013 - 日地系统L2点Halo轨道自主天文导航及精度分析