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1·A parametric approach is proposed for the satellite trajectory tracking problem by using the eigenstructure assignment theory and the model reference theory of linear systems.

基于线性系统的特征结构配置和模型参考理论提出一种卫星轨迹跟踪控制的参数化方法，设计系统的反馈镇定控制器和前馈跟踪控制器。

2·They said the satellite did not have a booster mechanism to correct its trajectory.

他们说卫星没有安装增压机制用以校正轨道。

3·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。

4·An iPhone app called Bullet Flight enables snipers to calculate range and trajectory for their shots, and built-in satellite-positioning allows local weather conditions to be taken into account.

一个名为“子弹飞行”的iPhone应用软件可以让狙击手为射击计算距离和弹道，通过内建的卫星定位功能还能把本地天气状况的影响计算在内。

5·The software comprises the satellite navigation parameters calculation module, the target trajectory calculation module, the error calculation module and etc.

软件主要由卫星导航参数计算模块、目标运动轨迹计算模块、误差计算模块等模块组成。

6·A fast design method for the lunar satellite transfer trajectory is presented by combining patched conic technique and ephemeris.

提出了一种将圆锥曲线拼接法与历表相结合，快速设计月球卫星地月转移轨道的方法。

7·The result is satisfactory by using a method of the artificial earth satellite orbit determination from range rate observations to fit the free-flight trajectory of rocket.

用人造地球卫星轨道计算的测速定轨方法，去拟合火箭飞行弹道的自由段，取得了比较满意的结果。

8·The results of the simulation indicate that the safety trajectory guidance strategy can achieve safety maneuver flying of the small satellite proximity operation when using thrust control method.

仿真计算结果表明，采用脉冲控制模式，本文提出的安全轨迹制导策略能够实现小卫星临近作业的安全机动飞行。

9·This paper provide some analyses of launch trajectory for launching geosynchronous satellite.

本文对地球同步卫星的发射轨道作了一些分析。

10·A satellite around the world an example of rotation to achieve an object around another object in accordance with a certain trajectory of rotation.

说明：一个卫星绕地球转动的实例，实现了一个物体绕另一个物体按照一定轨迹的转动。