【摘 要】
:
To meet the increasing research demand for deep space exploration,especially for the second libration point (L_2 ) conditional periodic orbit (Halo orbit) in th
【机 构】
:
Deep Space Exploration Research Center
论文部分内容阅读
To meet the increasing research demand for deep space exploration,especially for the second libration point (L_2 ) conditional periodic orbit (Halo orbit) in the Sun-Earth system,the methods to get analytical Halo orbit and differential-correction Halo orbit were described firstly, and the corresponding orbits accuracy was analyzed.Then,based on the results of third-order and differential-correction Halo orbits, the formation form was studied.Analysis was carried out to discuss the influence of system amplitude,initial phase, and phase difference on the formation form,as well as that of initial orbit values on form accuracy.Finally, some simulation results demonstrate the validity of the proposed methods.
其他文献
The phase separation and gel formation behavior in an alkoxy-derived silica sol-gel system containing Ci6EOi5 has been investigated. Various gel morphologies si
我国农村土地制度在建国后经历了多次变革,与我国城乡二元结构的背景密切相关,历次土地制度变革反映了我国城乡关系的转变。2008年10月十七届三中全会上正式提出的新的农村土地流转制度,立足解决我国的农村问题,必将会促进我国城乡一体化的发展。日本与我国同为人多地少、资源缺乏的国家,经历过多次土地制度改革并成功实现城乡协调发展。在对比借鉴日本经验的基础上,从城乡规划的角度,分析了我国新的农村土地制度可能会
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7
A fiberless seed mutant (fl) was identified in a commercial cotton (Gossypium hirsutum L.) variety Xu-Zhou 142 (FL). This phenotype is associated with lack of f
The magnesium alloy is prone to bum during die-casting, which limits its applications severely, so the effect of adding rare earth (RE) on the ignition-proof of
试验从连续流发酵产氢反应器(ZL92114474.1)中分离筛选出一株高效纤维素降解产氢细菌Clostridium sp.X9.X9利用微晶纤维素(MC)作为发酵产氢底物,得到最大单位体积产氢量(YH2)
概述了我国科技期刊经营管理中存在的主要问题,提出了我国科技期刊经营模式变革的方式,即引入国际先进的项目管理模式.对现代项目管理的内容和特点进行了简介,分析了科技期刊
采用Sobel等4种常用方法检测长翅灰飞虱翅膀、爪子等多细节边缘时,会出现边缘不明显、噪声干扰大等问题。采用形态学单结构腐蚀边缘检测也不理想,其边缘间断数和像素损失率最小值分别为10和0.689%。为此,对长翅灰飞虱图像先进行区域划分,以使单个区域的检测得到简化,并针对划分后的各个区域采用形态学多结构方法构造了膨胀腐蚀型边缘检测算子进行边缘检测。试验结果表明:这种划分区域并结合多结构的方法能提高对
To investigate the influence of design parameters on the performance of separation device,the structure and air-operated test of a low-shock separation device a
Objective To compare the changes in body composition, including fat mass index (FMI) and fat free mass index (FFMI) during puberty development of obese and norm