空间飞行器

Aircraft is a combined research product of every high technology. It needs a very powerful engine to drive it to fly at high speed, a highly reliable fuselage to stand the action of variable stress, an advanced navigation control system to control the flying direction and posture of the flight, and a comfortable cabin environment.

航空飞行器是各高新技术研究成果的集成，要提供很强动力并保持快速飞行速度的发动机、能承受反复交变应力的可靠性很强的飞行壳体、可控制飞行方向和位姿的先进导航系统和操纵系统、舒适的人机环境空间等。

Firstly, This paper processes geometry filtration based on character of orbit's apogee and perigee after orbit model is analyzed and based. Secondly Space Debris is separated into two kinds, coplanar and not coplanar according as location interrelation of target and debris. In Dynamic filtration's processing, considering prediction time limit and orbit perturbation, secular effects which have increaser effect is considered so that some need catching danger time point is appeased, some law about time when target and debris pass intersectant line each other is inferred, when debris and object are in different plane and some similar law also is inferred otherwise. The time list is arithmetical progression. These laws can improve calculation efficiency remarkably; Lastly orbit predict is a course approaching least distance. Danger time point in the last step become beginning time point from which debris and object's position and velocity are calculated by SXP4 Model which is an analytic model.By result, determine that relative movement trend is closer or apart, farther calculate the interval apart from time when predictive least relative distance occurs. Least relative distance and time when least distance occurs is calculated finally. It is a fast approach course adopting varied interval.

本文在分析、建立轨道摄动计算模型的基础上，首先采用基于轨道远、近地点特征对大量编目在册的空间碎片进行初步几何静态筛选，然后根据碎片与目标轨道面的相对位置特点把碎片分为异面与准共面两种情况以进行动态筛选，在筛选过程中考虑到预报时限长度和轨道摄动影响，引入了轨道摄动中具有积累效应的长期项以满足危险时间点的捕捉要求，利用了长期项摄动变化线性的特点导出了碎片与目标异面情况下各自过交线的时间序列成准等差数列的规律性和准共面情况下类似的规律性，从而显著地提高了前期轨道筛选的计算效率；最后对剩余危险碎片和目标飞行器利用SXP4轨道预报模型在前期轨道筛选的基础上以各个危险探测时间点为预报的时间起点，并根据预报计算结果，分析目标和碎片在该时间点的运动趋势是相互远离还是相互接近，推出预计最小相对距离发生时刻相对此刻的时间长度，得到其随时间变化的局部最小相对距离以及危险距离发生的时刻和相对速度，这是一个采用变时间步长、快速逼近最小相对距离的过程。

Three axis optical tracking test table is a kind of powerful instrument used to reproduce the flying posture of flying weapons in laboratory.

摘要三轴光学跟踪试验转台是一种在实验室条件下复现飞行器或导弹在空中飞行姿态半实物仿真的有力工具，它和目标发生装置组合在一起模拟导弹跟踪目标的过程，可以真实地模拟出导弹等飞行器在空间的各种姿态和动力学特性，从而对其传感器件、控制系统和执行机构等硬件设备的性能加以测试和评价，为飞行器的研制、改进和再设计提供各种参考依据。

ABSTRACT Three-axis flying posture simulator is a set of precise and sophisticated equipment with important significance of economy and national defence. TFPS is a kind of powerful instrument used to reproduce the flying posture of flying weapons in laboratory. TFPS, together with equipment producing infrared target, simulates the attacked target and flying missile, which can really simulate the various flying postures in space and dynamic characteristics. Thus, the performances of sensors, control system and actuator and so on can be tested and evaluated, which provides various reference bases for developing, improving and redesigning flying weapons.

三轴飞行姿态仿真转台是具有重大经济价值和国防战略意义的高精尖试验设备，它是在实验室条件下复现飞行器或导弹在空中飞行姿态的有力工具，它和红外目标发生装置组合在一起模拟袭击目标和飞行导弹，可以真实地模拟出导弹等飞行器在空间的各种姿态和动力学特性，从而对其传感器件、控制系统和执行机构等硬件设备的性能加以测试和评价，为飞行器的研制、改进和再设计提供各种参考依据。

Established the aircraft mathematical model of space motion, application, Newton interpolation polynomial method on the aerodynamic parameters identification, use of C language compiled simulation program, and to out the simulation results and analysis.

详细说明：对某飞行器的全空域飞行弹道进行了仿真研究。建立了飞行器空间运动的数学模型，应用"牛顿插值多项式法"对气动力参数进行了辨识，用C语言编制了仿真程序，并给出了仿真结果及分析。

It is the main aspects of developing of FMS to raise the frequency respondency, accuracy, robustness, and reliability, from the view of the development tendency for the flight control system simulation in the world.

它可以真实地模拟飞行器在空间的各种姿态，为各种飞行器的改进和再设计提供各种参考依据，其性能直接影响到地面仿真的真实程度。

In this paper a Nonlinear Variable Dimension Estimator is proposed for tracking maneuvering spacecraft. Two process models were incorporated by the Unscented Kalman Filter to account for the dynamic uncertainties of the target of interest: a nonmaneuvering model based on the two body problem and a maneuvering model taking the forced acceleration as the unknown system input to be estimated.

当飞行器处于无机动的巡航状态时，无色卡尔曼滤波器使用常规的二体问题模型描述其运动规律，而当飞行器被认为开始机动后，滤波器将扩展系统的状态空间，将机动加速度作为状态变量进行估计，从而增加了模型的适应性。

In order to realize high precision image motion compensation,the requirements of space camera system was put forward by analyzing the effect of aerocraft attitude on image motion compensation.

通过分析飞行器姿态对像移补偿结果的影响，提出空间相机对飞行器姿态精度的要求以实现高精度的像移补偿。

After hears the yellow Jinlong commander in chief's order, already succeeded the hook to live this planetoid the starships, after passed through the very short time, had achieved with the planetoid the similar speed, likely the human rode in the acceleration the airship to be same, starts the anchor chain which back and forth vibrated this time already to pull taut, and started to maintain stably, all starship pilot, already not in the worry planetoid surface more than 1200 degrees high temperatures, the thick fog group which as well as raided intermittently, after received the order then the rapid start automatic hinge machine, to this planetoid superficial fast advancement, in order to set aside the enough debarkation space for the second interspace group,This time by far looks, the entire starry sky scene, looks like a big spider to lead only to creep along innumerably small spider such, has filled the mysterious visual effect, lets the human feel incomparably shocks!

在听到黄金龙总指挥官的命令后，已经成功钩住这颗小行星的星际飞行器们，在经过很短的时间后，就与小行星达到了同样的速度，就像人乘坐加速中的飞船一样，开始来回抖动的锚链此时已经绷紧，并开始保持稳定，所有星际飞行器的驾驶员，已经不在顾虑小行星表面1200多度的高温，以及阵阵袭来的浓雾团，接到命令后便迅速启动自动铰链机，向这颗小行星的表面快速推进，以便给第二星际小组腾出足够的登陆空间来，此时远远望去，整个星空场面，就像一只大蜘蛛带领着无数只正在爬动中的小蜘蛛那样，充满了神奇的视觉效果，让人感到无比震撼！

In order to reduce the influence of scroll and pitch movements on the image quality of a TDICCD space camera,the requirements for the scopes of scroll angle and pitch angle and their control errors are put forward to obtain an image with high signal noise ratios and high resolution.

为了降低飞行器侧摆及前后摆对TDICCD空间相机成像质量的影响，提出了对飞行器侧摆角和前后摆角范围及控制误差的要求，以获取高信噪比和高分辨力图像。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。