State Transition Matrix of Variational Integrators for Halo Orbits

All files are organized within the main folder named VI_CR3BP_AMS.The folder structure and contents are as follows:data/Stores the raw and processed data generated from the numerical simulations.figures/Contains MATLAB figure files (.fig) used for generating the plots in the manuscript.lib/Includes programs for computing the Lagrange points in the circular restricted three-body problem (CR3BP).main/Contains the main executable scripts:Diff_Corr.m : Implements differential correction, symplectic conservation verification, and time-reversal symmetry verification.halo_family.m : Contains the code for generating the L2 halo orbit family.S_E_halo.m : Performs symplectic conservation and time-reversal symmetry verification for the Sun–Earth CR3BP.src/Contains custom functions used throughout the project.integrators/ : A subfolder containing the implementation of variational integrators.