Grid Search
Author: Tianjiang Shuo
Website: https://cislunarspace.cn
Definition
A global optimization method that uniformly samples points in a parameter space, computes and evaluates each one. This study performs coarse and fine grid searches over a three-dimensional search space of initial costates, each requiring millions of trajectory integrations. Simple and direct but computationally expensive, suitable for low-dimensional spaces with fast function evaluations.
Application Value
在轨道动力学数值仿真中，该方法用于提高计算精度和效率. 通过合理的离散化策略，可以在保证数值稳定性的同时大幅减少计算量.
Related Concepts
- 同步旋转坐标系（Synodic Rotating Frame）
- Gauss求积公式（Gauss Quadrature Formula）
- 星座构型向量（Constellation Pattern Vector）
- 着陆缓冲机构（Landing Impact Attenuation Mechanism）
References
- Oshima et al. 2017
- Campana 等 - 2024 - Low-energy earth–moon transfers via theory of functional connections and homotopy