Cislunar Domain Awareness

Author: Tianjiang Shuo

Website: https://cislunarspace.cn

Definition

The capability to detect, track, catalog, and assess the intent of objects in cislunar space. Ground-based observation is limited by range (cislunar objects are approximately ten times farther than GEO) and viewing geometry constraints. Space-based sensors in cislunar and Lagrange point orbits are needed to supplement ground coverage. Compared to near-Earth SDA, cislunar domain awareness faces larger distance scales, more complex three-body dynamics, and more limited observation geometries.

Application Value

This term has significant practical applications in cislunar mission planning and execution.

  • Cutoff Magnitude, m_co
  • Observability Metric, Gamma
  • Diffuse Reflectance, a_diff
  • Specular Reflectance, a_spec

References

  • Observability metrics for space-based cislunar domain awareness (Fowler & Paley, 2023)
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Contributors: ouyangjiahong, Ou Yang Jiahong