Gravitational Light Deflection

Author: Tianjiang Shuo

Website: https://cislunarspace.cn

Definition

A general-relativistic effect in which the gravitational field of a massive body bends the propagation path of an electromagnetic signal, causing the actual travel distance to exceed the straight-line distance. In cislunar one-way ranging modeling, corrections for gravitational deflection by the Sun, Earth, Moon, and other bodies must be included.

Application Value

Based on its definition, a general-relativistic effect in which the gravitational field of a massive body bends the propagation path of an electromagnetic signal, causing the actual travel distance to exceed the straight-line.

Related Concepts

• 轨道力学（Orbital Mechanics）
• 坐标系（Coordinate Frame）
• 积分（Integration）

References

• 曹建峰 等 - 2025 - 地月空间单程测量观测建模与算法实现