基于地月信息提出了一种奔月转移轨道的自主光学导航算法。
The autonomous optical navigation algorithm based on Earth-Moon information during the cislunar transfer orbit phase is presented.
首先，基于归一化的改进春分点根数建立了星际小推力转移轨道的优化模型；
First, the optimization model of interplanetary low-thrust trajectory was established using modified equinoctial elements.
然后基于不变流形理论和庞加莱截面方法，设计了不同拉格朗日点间转移轨道。
Then on the basis of invariant manifold theory and Poincaré section, a transfer trajetory between L1 and L2 of the Earth-Moon system was given.
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。
A fast design method for the lunar satellite transfer trajectory is presented by combining patched conic technique and ephemeris.
其中轨道运动学约束包括地球停泊轨道约束、地月转移轨道约束和月球卫星轨道约束。
The restriction of orbital kinematics includes that of earth parking paths earth-moon transfer path, and lunar satellite path.
采用精确轨道动力学模型，得到了满足共面交会约束的发射窗口，以及地月转移轨道特性。
The launch window meeting the restriction of coplanar rendezvous and the characteristics of trans-lunar trajectory is obtained by precise dynamics model.
其次，在导引段，以脉冲控制策略为前提，分别设计了指数滑移导引律和能量最优转移轨道。
Secondly, the exponential slippage guidance method and optimal energy transfer orbit are designed respectively in the homing phase.
“鑫诺二号”卫星于29日零时20分点火升空，25分钟后与运载火箭分离，进入地球同步转移轨道。
The satellite split off from the rocket about 25 minutes after its 00:20 lift-off, entering a geosynchronous transfer orbit.
针对星际探测任务中燃料最省小推力转移轨道问题，提出一种基于标称轨道的快速设计方法。
A novel rapid method to design optimal-fuel interplanetary trajectory for low-thrust propulsion is presented based on normal trajectory approach.
典型的月球探测器飞行轨道包括地球停泊轨道段、地月转移轨道段、月球卫星轨道段和着月轨道段。
A typical orbit of lunar probe includes earth parking orbit segment, earth-moon transfer orbit segment, lunar satellite orbit segment and moon-landing orbit segment.
利用重叠圆锥曲线方法，针对着陆型和月球卫星型两种地月转移轨道，给出了一种地月转移轨道的快速设计方法。
A fast design method for transfer orbit of lunar probe is presented using overlap conic curve method aimed at lunar landing transfer orbit and lunar satellite transfer orbit.
利用重叠圆锥曲线方法，针对着陆型和月球卫星型两种地月转移轨道，给出了一种地月转移轨道的快速设计方法。
A fast design method for the lunar satellite transfer trajectory is presented by combining patched conic technique and ephemeris.
从地月系L1点晕轨道向月球圆停泊轨道具有多种零消耗转移轨道，但不同轨道的能耗和转移时间等指标不尽相同；
There are many kinds of zero-cost transfer trajectories from L1 to round parking orbits, but the energy cost, time cost of different trajectories are also different.
这些项目每天把成千上万原本需要更多的公交车的旅客转移到轨道交通上。
The projects shifted to rail transport thousands of passengers per day who otherwise would have required more buses.
结果表明：方铅矿表面态在与外来吸附质相互作用时，不仅有轨道重迭而且发生电子转移。
The result showed that galena surface state interacted with adsorbates not only in overlap of orbitals, but in electron transfer between them.
在这种情况下，轨道转移入轨误差的研究变得较为复杂。
In this case, the study of orbit transfer insertion error becomes very complicated.
将微波等离子推力器(MPT)应用于“东方红三号”(DFH3)卫星的推进子系统，完成其轨道转移和南北位置保持任务。
Microwave plasma thruster (MPT) was applied to the sub system of DFH 3 satellite to complete its orbit transfer (OT) and north south station keeping (NSSK).
光的吸收可以同时导致光束的自旋角动量或轨道角动量转移给微米粒子，就像光学镊子一样引起粒子的转动，从而形成光学扳手。
Absorption of the light allows both the spin and orbital angular momentum of a light beam to be transferred to microscopic particles held within optical tweezers, forming an optical spanner.
在对轨道交通转移率模型参数的计算中，用VB语言编写了新的MNL模型标定程序。
In the calculation of the model parameter of shifting rate of rail transportation, I write standard procedure of MNL model in common use in VB language.
该方法能有效控制铁磁谐振过电压从混沌状态转移到期望的周期轨道，实现系统状态在混沌和有序之间的转换。
The proposed method can effectively control the ferroresonance over voltage from the chaos to period orbit and implement the transformation of system status between chaotic and ordered situation.
分析认为PPT是一种先进的小推力动力装置，特别适合于微小卫星的轨道转移、姿态控制、位置保持以及星座编队飞行。
It was showed that PPT was a kind of advanced propeller with small thrust, which was suitable to orbit transfer, attitude control, station keeping and formation flying for small and micro satellite.
计算了NO分子各个轨道上的占有数，发现其电荷转移情况与CO在过渡金属表面吸附的情况相似。
It is evident from our results that the charge transfer between adsorbed NO and substrate is similar to CO adsorption on transition metal.
在解析轨道理论基础上，给出了平均轨道要素偏差到瞬时轨道要素偏差的状态转移矩阵。
On the basis of analytical orbit theory, the state transition matrix from mean to transient orbit errors was put forward.
在化学键形成时并不是电子配对的结果，而是电子从能量较高的原子轨道转移到能量较低的成键的分子轨道上使体系能量降低的结果。
It is not result of spin pairing to form chemical bonds, Instead, transfer electron from the atomic orbital of taller energy to the moleen -lar orbital of lower energy.
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.
以低加速度从航天飞机的低地球轨道转移到对地静止轨道，需要有限多次点火。
Finite multiple burn method is used for the transfer from Space Shuttle low earth orbit to the geostationary orbit with low accelerations.
得到了它的电子结构，包括分子丛轨道能量本征值谱、态密度、电荷转移等等结果。
It's electronic structure, including spectrum of the ground state valence levels, density of states, and the charge transfer between adsorbate and substrate, is obtained.
本文研究了在共面圆轨道HEO-LEO的过程中，气动辅助轨道转移飞行器（AOTV）在大气内飞行的极小时间控制问题。
This paper considers the minimum-time control of aeroassisted orbital transfer vehicle (AOTV) which arises in the study of coplanar HEO-LEO orbital transfer.
本文研究了在共面圆轨道HEO-LEO的过程中，气动辅助轨道转移飞行器（AOTV）在大气内飞行的极小时间控制问题。
This paper considers the minimum-time control of aeroassisted orbital transfer vehicle (AOTV) which arises in the study of coplanar HEO-LEO orbital transfer.
应用推荐