Introduce the reference frame and time system used in orbit design particularly. Analyzed the orbit characteristic of two-body problem and launch window.

详细介绍了用于轨道设计的坐标系统和时间系统，分析了二体轨道特性和发射窗口的基本特性。

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Introduce the reference frame and time system used in orbit design particularly. Analyzed the orbit characteristic of two-body problem and launch window.

详细介绍了用于轨道设计的坐标系统和时间系统，分析了二体轨道特性和发射窗口的基本特性。

youdao