针对圆(近圆)轨道航天器相对运动的固定时间状态转移问题，提出了一种基于导航点的多脉冲优化轨迹生成策略。

An optimal trajectory generation strategy based on way-points is presented to solve the fixed-time state transition for spacecraft relative motion in a circular orbit.

youdao

数控系统的快速性、驱动优化和刀具轨迹的充分处理会获得快速精确的程序执行效果，可用于复杂形状加工。

The sum of the control quickness, drive tuning and efficient handling of the tool path is said to yield fast and accurate program execution even when working with complicated shapes.

youdao

采用沿约束轨迹的推演计算方法及优化原理对航天飞机自动着陆飞行轨迹进行优化设计。

This paper applies the technique of constrained trajectory propagation and optimal theory to design the autolanding trajectory for a space shuttle.

youdao