In this context, this paper also carries out comprehensive related researches, such as the orbit design and computation of the Earth-Mars transfer orbit, the selection of its launch window, and mid-course trajectory correction maneuver, etc.. 文中以此为背景,对地火转移轨道的轨道设计、轨道计算、发射窗口选择和中途轨道修正等进行了全方面的研究。