The only criterion of the choice is that the relative orbit is clear.
选择的唯一准则是相对轨迹清楚。
The periodic relative orbit was designed based on the relative orbit elements and the mission requirements.
采用相对轨道要素设计了理想的基准伴随轨道。
High precise real-time autonomous relative orbit determination between distributed spacecraft is a key technology in the task of spacecraft formation maintenance.
分布式航天器间相对位置的实时高精度测量是分布式航天器实现空间队形保持的关键技术之一。
With the difficulty of measuring relative velocity considered, a relative orbit design method is proposed to obtain diverse relative orbits with only position feedback.
为了得到更丰富的相对轨道，同时考虑到相对速度测量困难，研究了仅利用位置反馈进行相对轨道设计的方法。
Second, the initial point and transfer time are same for different object relative orbit, and the minimum consumption of fuel is proportional to the expansion deflection.
不同膨胀系数时施加脉冲的时刻不变，最优的燃料消耗与膨胀变化量成正比；
This paper reveals the dynamical characteristics of relative orbital motion of formation flight and presents the principles and method for the orbit configuration design of formation flight.
本文研究了编队飞行卫星群的轨道动力学特性，提出了编队飞行的轨道构形设计的原则和方法。
Positional and attitude error dynamics model of small satellite relative to a target satellite was derived, then the desired relative orbit and desired attitude of small satellite were designed.
建立了小卫星相对轨道和姿态的误差动力学模型，根据作业任务和姿态指向要求确定了小卫星相对轨道和姿态的期望运动；
Like racing cars that swerve and hit each other on a circular track, the moons' speed relative to each other is low because they travel in nearly the same orbit.
这有点像是突然转向的赛车在环形赛道上相撞，月亮们也在同一轨道公转，所以他们之间的相对速度很小。
But the satellites will arrive with less relative speed than spacecraft making the trip in three days, which means less fuel will be needed to brake and drop into lunar orbit.
但是相比太空飞船，卫星着陆时需要相对小的速度，这将需要三天的时间，意味着消耗更少的燃料进入绕月轨道。
By using the classical orbit element differences method, the periodic characteristics of relative motion and the influence of atmospheric drag on relative motion were analyzed.
基于经典轨道要素偏差法分析了相对运动特性和大气阻力对相对运动的影响。
There are some important application values and wide application prospect of relative research on concomitant orbit maneuver application.
伴随轨道机动应用相关研究具有重要的应用价值和广阔的应用前景。
Pluto's orbit is also steeply inclined relative to Neptune's.
同时冥王星的轨道相对于海王星也严重倾斜。
They are relative motion orbit simulation system for point target, MDIS simulation system for point target, and MDIS simulation system for general image sequences which include background scene.
最后，实现了点目标相对运动轨迹仿真系统，点目标电子稳像仿真系统和存在背景图像的电子稳像系统三个仿真演示系统。
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.
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。
Use static elements or relative static elements in the changing graph to get the main moving point and its relations with other known conditions to correctly calculate the orbit equation.
利用变动图形吕的静止或相对静止因素，抓住主要动点及其与已知条件的联系，正确求出轨迹方程。
An optimal orbit maneuver method based on continuous low thrust was presented to solve relative motion control.
针对近距离相对运动的轨道控制问题，提出用常值小推力完成最优转移的方法。
Considering coupled control inputs, an integrated coupling relative position and attitude dynamic model of the on-orbit servicing spacecraft is built with respect to the target spacecraft.
考虑控制输入耦合，建立服务航天器对目标航天器的相对位置和姿态一体化耦合动力学模型。
When the satellite works on orbit or is testing on ground, the relative changing laws of simulated telemetry values are consistent with the same cloud picture imaging standards.
对于相同的云图成像基准，地面测试与卫星在轨运行时，与模拟遥测值的对应变化关系是一致的。
Second part is the historical orbit and status quo of Chinese urbanization and transfer-out of rural labor surplus and the relative analysis.
第二内容摘要部分是我国城市化和农村剩余劳动力转移的历程和现状分析；
The research results show that the method of the orbit improvement and relative positioning can obtain a better accuracy, we illustrate this technique by processing phase observations of baselines.
计算结果表明在基线上用轨道改进定位方法是可行的，可以提高定位精度。
Two clusters of formation flying satellites with a relative angle on geosynchronous earth orbit were used to construct a space-based continuous navigation system for deep space exploration.
介绍了目前各国应用的多种地基和天基空间目标探测与识别系统，并对各系统的性能进行了详细的分析和总结。
Two clusters of formation flying satellites with a relative angle on geosynchronous earth orbit were used to construct a space-based continuous navigation system for deep space exploration.
介绍了目前各国应用的多种地基和天基空间目标探测与识别系统，并对各系统的性能进行了详细的分析和总结。
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