Approach-Phase Ground-Based Targeting
摘要
Let’s define the state vector \(\textbf{X}\) of the lunar module (LM) as \(\textbf{X} = (\textbf{R},\textbf{V},\textbf{A},\textbf{J},\textbf{S})\) . This definition of the state vector will be used throughout the monograph. Time interval between terminal instant and middle points of the approach phase is computed as [1].