Trajectory generation method for celestial body surface trajectory flight detection

The invention discloses a trajectory generation method for celestial body surface trajectory flight detection, and relates to the field of celestial body surface flight detector trajectory design. Themethod comprises the following steps: (1) two-degree-of-freedom motion models are built in vertical planes of aircraft trajectories; (2) the aircraft trajectories are divided into six phases; (3) parameters of each phase in the two-degree-of-freedom motion models are set; (4) section change conditions of each flight phase are set; (5) boundary constraint conditions of each flight phase are set; (6) equations for optimizing targets J are built; (7) particle swarm optimization parameters are set; (8) parameters to be optimized are selected, and are optimized by adopting a particle swarm optimization method according to the particle swarm optimization parameters to obtain optimized parameters; and the optimized parameters are substituted into the two-degree-of-freedom motion models to obtainprimary trajectories; and