航天器的重量和轨道不同，所需火箭提供的能量和速度也各不相同，各种轨道与速度之间有一定的对应关系。
And the weight of the spacecraft orbit, the rocket needed to provide energy and speed varies, with a variety of track between the speed of a certain relationship.
航天器进入围绕地球的轨道，如果给予足够的速度，它会继续朝着太空的另一个目的地前进。
The spacecraft goes into an orbit around Earth or, if given enough velocity, it continues toward another destination in space.
最后，采用轨道根数作为状态变量，以航天器发动机产生的推力加速度作为控制变量建立空间拦截模型。
Finally, the orbital elements are introduced as state variables and the accelerations are produced by equation as control variables, the space interception model is established.
最后，采用轨道根数作为状态变量，以航天器发动机产生的推力加速度作为控制变量建立空间拦截模型。
Finally, the orbital elements are introduced as state variables and the accelerations are produced by equation as control variables, the space interception model is established.
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