Cislunar Initial Orbit Determination for Angles-only Short Arcs Based on Multi-Constrained Optimization

doi:10.1016/j.ast.2026.111999

Cislunar Initial Orbit Determination for Angles-only Short Arcs Based on Multi-Constrained Optimization

2026-02-23

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DOI：10.1016/j.ast.2026.111999

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• This paper presents and assesses a multi-constrained optimization algorithm for IOD in cislunar space using angles-only short-arc observations. • By integrating measurement, dynamic, and inherent orbital constraints, this approach is designed to enhance the convergence success rate and accuracy of cislunar IOD. • The algorithm’s performance was validated by setting up multiple simulation scenarios under a high-fidelity ephemeris model. • Numerical simulations demonstrate that, compared to three other cislunar IOD algorithms, our algorithm exhibits stronger robustness under varying observation geometries, a higher convergence success rate, and improved accuracy.

Keywords:

Cislunar IOD

Angles-only observations

Multi-constrained optimization

Initial orbit determination

Short-arc observations

Cislunar Initial Orbit Determination for Angles-only Short Arcs Based on Multi-Constrained Optimization

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