近年来，我国发射了世界上第一颗量子卫星，嫦娥四号实现了月球软着陆。
In recent years, our country has sent up the world's first quantum satellite, and Chang'e-4 has made a soft landing on the moon.
为实现在月球表面指定区域的精确软着陆，研究了月球软着陆的线性二次型最优制导方法。
To achieve the soft landing on a specified region of lunar surface, the paper studies a linear quadratic optimal guidance method for lunar soft landing.
针对月球软着陆仿真任务的需求，采用COM组件技术，设计基于HLA的月球软着陆仿真系统的体系结构。
For the needs of lunar soft-landing simulation system, using the com component technology, the paper designs the lunar soft-landing architecture based on HLA.
其次，建立了月球软着陆主制动段的误差模型，并运用误差敏感系数矩阵对所提出制导律的制导误差进行分析。
Secondly, error modules of main braking were established and errors of the guidance law designed above were analyzed by error sensitivity coefficient matrixes.
在2017年左右，将会有另外一颗(太空漫游者)月球软着陆器登录到月球表面，然后带回月球泥土和石头样本供科学研究。
Another rover will land on the moon and return to Earth with lunar soil and stone samples for scientific research around 2017.
第一次撞击月球是有意为之（在1959年，能撞击月球就是个大成就）；1959年的三次软着陆尝试均以失败告终。
The first crash was intentional (in 1959, even hitting the moon was a big achievement); the three in 1965 were all failed attempts at soft landings.
针对月球探测器垂直软着陆过程，基于耗燃最优的原则，利用最优化理论确定了点火切换曲线。设计出一种制动方案。
Based on minimal fuel principle, the switching curve of ignition is confirmed by using optimization theory, and a braking scheme is designed for the process of the lunar probe vertical soft landing.
研究了一种应用参数化控制求解月球探测器精确定点软着陆最优控制问题的方法。
A method of applying parametric control and enhancing technique in order to solve optimal control problem of lunar probe precise Fixed-point soft landing is studied.
研究了一种应用非线性规化求解有限推力作用下月球探测器软着陆最优控制问题的方法。
A method of applying nonlinear program to solve optimal control problem of lunar probe soft landing under finite thrust is studied.
至2013年左右，中国计划发射探月器(在月球释放软着陆器)。
Around 2013, China plans to launch a lunar probe that will set a rover loose on the moon.
从我国首个人造卫星“东方红一号”，到月球表面的软着陆，中国的航天事业已取得了不少卓越的成就。
From its first satellite, Dongfanghong-1, all the way to soft-landing on the moon's surface, China's aerospace industry has made remarkable achievements.
1968年1月9日，测量员7号空间探测器在月球表面软着陆，标志着美国对月球表面的无人探测系列任务的结束。
On Jan. 9, 1968, the Surveyor 7 space probe made a soft landing on the moon, marking the end of the American series of unmanned explorations of the lunar surface.
在我国“嫦娥计划”的二期工程中，要实现月球探测器软着陆于月球表面。
In the second stage of Chinese lunar exploration project, soft landing of the lunar explorer on the lunar surface is to be realized.
根据软着陆不同阶段飞行任务的不同，分阶段提出了月球探测器的姿态控制方案。
According to the flight mission of the different phases, the attitude control schemes were designed in the paper respectively.
2013年，继美国和苏联之后，中国成为第三个让航空器在月球表面成功软着陆的国家。
In 2013, China became the third nation-after the United States and the Soviet union-to soft-land a spacecraft on the moon.
2013年12月，“嫦娥三号”月球探测器首次实现中国航天器在地外天体软着陆，完成月球表面巡视探测。
In December 2013, the Chang 'e-3 realized the first soft landing on the surface of an extraterrestrial body by a Chinese spacecraft and completed patrol and exploration on the surface of the moon.
2013年12月，“嫦娥三号”月球探测器首次实现中国航天器在地外天体软着陆，完成月球表面巡视探测。
In December 2013 the Chang 'e-3 realized the first soft landing on the surface of an extraterrestrial body by a Chinese spacecraft and completed patrol and exploration on the surface of the moon.
为提高分析月球着陆器软着陆有效载荷着陆冲击响应的准确性，提出一种基于瞬态动力学的着陆器有效载荷软着陆冲击响应分析方法。
To improve the analysis accuracy of soft landing impact response for lunar lander, a method based on nonlinear transient dynamic analysis was presented.
为提高分析月球着陆器软着陆有效载荷着陆冲击响应的准确性，提出一种基于瞬态动力学的着陆器有效载荷软着陆冲击响应分析方法。
To improve the analysis accuracy of soft landing impact response for lunar lander, a method based on nonlinear transient dynamic analysis was presented.
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