查询词典 orbit determination

The main task is the orbit computation including the orbit determination and prediction.

主要任务是卫星轨道计算包括轨道测定及预估。

And the progress of kinematic orbit determination of low orbit satellites based on GPS and studies related are discussed.

在运动学定轨中，有效的卫星跟踪个数和好的GPS数据质量是很重要的。由于周跳和粗差可以大大的降低最终轨道的精度，因而周跳探测和粗差处理是运动学定轨处理中一项非

In order to provide orbit completion for Chinese lunar explore project, it was founded the lunar satellite orbit determination model and software by us.

为了对中国月球探测工程的提供轨道计算支持，我们研究建立了自己的月球卫星轨道确定模型和软件。

The project of orbit determination in this paper is applied to two study projects. The method of orbit determination and the results achieve the de mands of the projects.

本文的定轨方案在两项预研研究课题中得到了应用，其定轨方法和实际的计算结果达到了课题要求。

This paper firstly discusses the constellation rotation error of autonomous orbit determination of navigation satellites which only make use of crosslink ranging observation, then analyzes in depth the influence of tide perturbation on right ascension of the ascending node and autonomous orbit determination.

讨论了仅利用星间测距观测值进行导航卫星自主定轨时所遇到的星座整体旋转问题，分析了潮汐摄动对升交点赤经以及导航卫星自主定轨的影响。

Since different orbit has different orbit characteristic, this paper analyses the accuracy of orbit determination for Translunar orbit and Mission orbit separtely.

嫦娥1 号的整个飞行过程包括以地球为中心的调相轨道飞行、地月系之间的奔月飞行轨道以及环月轨道的飞行。

Increasing observation accuracyand reducing the error of the measuring ship will improve the accuracy of orbit determination during Translunar orbit phase,and the reduced dynamic method and improvement of lunar gravity accuracy will benefit the accuracy of orbit determination during Misson Orbit phase.

在奔月阶段，提高观测量精度和减小测量船的点位误差将有助于提高定轨精度，而在环月阶段，采用减缩动力学方法和提高月球重力场精度将有助于提高定轨精度。

This paper focus as on the Accuracy Analysis of orbit determination for the on-going Chinese lunar exploration mission 'Chang Er 1', using the joint tracking network of USB and VLBI with real network geographic distribution scenario and considering both systematic and stochastic measurement noise. The whole flight orbit of the Charng Er 1' includes Phasing orbit, Translunar orbit and Mission orbit.

本文以我国正在实施的探月计划&嫦娥1 号&工程为背景，分析了在我国USB 测控网和VLBI 跟踪网的现有空间分布、观测弧段和尽可能接近真实情况的误差源等前提下的探月飞行器的精密定轨。

The principle and the mathematical model of reduced-dynamic precise orbit determination are discussed based on precise point positioning technique by zero-differenced dual-frequency P codes and epoch-wise differenced carrier phase data. Then the key issue in the reduced-dynamic POD, i. e. the pseudo stochastic pulses and their impact on orbit determination accuracy are analyzed.

论述了基于低轨卫星星载GPS双频观测值的精密单点定位技术的简化动力学定轨方法的数学模型，分析了简化动力学定轨中的关键问题―伪随机脉冲的设置问题及其对定轨精度的影响。

In satellite formation flight, the measurement and determination of independent relative orbit is one of the most important techniques of formation flight. The traditional techniques of using star sensor, radar and GPS signal to determine relative orbit are considered. Relative orbit determination which is based on pseudo satellite technique is considered.

编队飞行卫星群自主式相对轨道测量和确定是绕飞轨道的关键技术之一，考虑了利用星敏感器和雷达以及利用GPS信号来进行相对定轨的传统方式，提出了基于伪卫星技术的定轨方案。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失