GRAIL Gravity Field Model

Author: Tianjiang Shuo

Website: https://cislunarspace.cn

Definition

A lunar gravity field model derived from NASA's GRAIL (Gravity Recovery and Interior Laboratory) mission data. The GRGM660PRIM version is expanded to degree and order 8 spherical harmonics and is among the most accurate global lunar gravity models. In high-fidelity ephemeris models, it computes lunar non-spherical gravitational acceleration and is critical for the accuracy of cislunar station-keeping and orbit prediction.

Application Value

The GRAIL重力场模型 concept is applied in cislunar space research, providing technical support or analytical methods for lunar exploration missions.

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References

  • Zhang and Wang 2022 Continuous-thrust station-keeping of cis-lunar orbits using optimal sliding mode control with practical constraints