State Key Laboratory of Astronautic Dynamics;
China Xi’an Satellite Control Center;
Xi’an;
China;
School of Astronomy & Space Science;
Nanjing University;
Nanjing;
China;
Tianqin Research Center for Gravitational Physics;
Sun Yat-sen University;
Zhuhai;
China;
Trajectory; Design; Global; Optimization; Formation; Flying; Flying; Sequence; Formation; Maintaining;