查询词典 orbit

Through comparisons and analysis of the orbit determination results, some meaningful conclusions are drawn.

结果表明，3种模型在精度和实时性方面各有优点，应用中应根据具体情况进行选择。

Relative orbit determination which is based on pseudo satellite technique is considered.

在这些方案中，应用了差分GPS技术，采用优化方法求解多元非线性方程。

In this paper,we analyze the key techniques for the service precision of Global Navigation Satellite System such as time reference,time synchronization,satellite orbit determination,etc.

对影响导航定位系统定位精度的各种因素进行了分析。研究了影响导航定位精度的关键技术问题，如时间基准、时间同步和卫星定轨等。

Firstly this paper introduces some basic information about the determination of satellite orbit, including time systems, coordinate systems, the definition of these systems and the transfer between different systems.

文中首先介绍了卫星定轨的一些基础知识，主要包括时间系统、坐标系统的定义和不同系统之间的转换关系。

In the course of determination orbit, the on-board GPS surveying plays a crucial role, that is the quality of the on-board GPS data.

其中对轨道精度起决定性作用的就是星载GPS测量的精度，也就是星载GPS数据的质量。

Algorithms of on-board GPS real-time single point positioning and dynamic orbit determination using positioning solutions are mainly studied.

本文重点研究星载GPS单点实时定位和基于单点定位结果的动力学定轨方法。

Open loop Doppler data have been used in the orbit determination of Mars Express.

开环多普勒数据已经开始尝试用于卫星的定轨，今后有关开环多普勒数据的科学应用也在准备中。

Furthermore, a strategy of precise orbit determination for lunar satellites is presented, which combines analytical and numerical methods. It is assessed to be reliable and practical.

在此基础上，建立了一种数值方法和分析方法相结合的月球卫星精密定轨方法，并以仿真计算证实了方法的可靠性与应用前景。

Lambert theorem plays an important role in orbital interception and initial orbit determination.

Lambert方程在轨道拦截和初始轨道确定起着重要作用。

In this paper,the scheme of autonomous orbit determination of satellite is described,the extended Kalman filter algorithm based on improved numerical method is put forward.

高精度的自主定轨对探测器实现深空探测任务有着重要的意义，结合利用星光折射角的测量确定卫星轨道的自主导航方案，提出了基于数值算法改进的扩展卡尔曼滤波算法，提高了运算精度，通过仿真验证了该算法的优越性。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。