In order to realize large airspace transfer orbital trajectory of an anti-ship missile, a 3-dimensional virtual target's proportional navigation guidance (PNG) law is proposed.
为了实现反舰导弹的大空域变轨，提出了一种三维虚拟目标比例导引律。该导引律利用简单的控制指令就能控制导弹完成复杂的大空域变轨。
The most efficient launch trajectory is due east from a launch site, which places the satellite into an orbital inclination equal to the latitude of the launch site.
最有效的发射轨道应该在发射地点的东边，使卫星轨道倾度与发射点纬度相等。
Under a Lagrange coordinate system the trajectory of particles was tracked by the use of a random orbital method.
在拉格朗日坐标系下，用随机轨道法跟踪颗粒的轨迹。
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