基于信息的地月空间航天器间跟踪与导航轨迹规划
Information-Based Trajectory Planning for Spacecraft-to-Spacecraft Tracking and Navigation in Cislunar Space
- Colorado Center for Astrodynamics Research（科罗拉多天体动力学研究中心）
- Department of Aerospace Engineering and Engineering Mechanics（航空航天工程与工程力学系）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
提出一种平衡信息收集与控制代价的轨迹规划方法，用于地月空间航天器间跟踪，在DRO光学观测中实现导航和跟踪误差近一个数量级的改善。
AI中文摘要：
我们提出了一种轨迹规划方法，该方法在信息收集与控制代价之间取得平衡，以改善地月空间航天器间的绝对跟踪性能。地月空间的日益扩展使用要求采用替代性导航与跟踪程序，以尽量减少对地面支持的依赖。在应对这一需求的各种努力中，航天器间跟踪利用一系列相对测量中编码的非线性动力学示踪物，来推断观测者和目标两者的绝对状态。在此模式下运行的航天器之间的几何关系会显著影响跟踪性能。本研究通过设计观测者轨迹来考虑这种几何影响，该轨迹联合平衡控制代价与预期航天器间跟踪性能的信息论量化指标。我们的方法适用于多种具有不同传感模态的低推力观测平台，并可在规划中纳入多个空间目标。通过在最优控制问题中利用信息增益，我们报告了在远距离逆行轨道（DRO）中运行的光学观测者的预期导航和跟踪误差几乎提高了一个数量级。这项工作证明了信息最优的低推力航天器轨迹设计对于当前及即将到来的地月空间任务的可行性和价值。
英文摘要：
We present a trajectory planning method that balances information collection and control effort to improve cislunar spacecraft-to-spacecraft absolute tracking. Expanding use of cislunar space requires alternative navigation and tracking procedures that minimize reliance on ground-based support. Among efforts to address this need, spacecraft-to-spacecraft tracking exploits nonlinear dynamical tracers encoded in a series of relative measurements to infer absolute states of both an observer and a target. The geometry between spacecraft operating under this mode can significantly influence tracking performance. This work considers this geometrical impact by designing observer trajectories that jointly balance control effort and an information-theoretic quantification of the expected spacecraft-to-spacecraft tracking performance. Our methods are designed for multiple low-thrust observation platforms of various sensing modalities and can incorporate multiple space object targets in planning. By leveraging information gain in the optimal control problem, we report almost an order of magnitude improvement in the expected navigation and tracking errors for an optical observer operating in a Distant Retrograde Orbit (DRO). This work demonstrates the feasibility and value of information-optimal low-thrust spacecraft trajectory design for current and upcoming cislunar missions.
