earth orbit的例句大全

As a hot spot on the research of space navigation in recent years, X-ray Pulsar-based Navigation ( XPNAV) can offer abundant navigation information, such as position, velocity, attitude and time etc. for the spacecrafts in near-Earth orbit, deep space and interplanetary space.

X射线脉冲星导航（X-ray Pulsar-based Navigation，XPNAV）是近几年空间导航领域研究的热点，可为近地轨道、深空及星际空间飞行的航天器提供位置、速度、姿态和时间等全面的导航信息。

Based on the functionality and traffic characteristics of the Medium Earth Orbit Tracking and Data Relay Satellite System ( MEO-TDRSS), the coverage properties and Inter-Satellite Link ( ISL) performances of four familiar satellite constellation schemes which are adopted as the MEO-TDRSS of China are simulated and compared.

基于中轨跟踪与数据中继卫星系统（MEO-TDRSS）星座方案的功能和业务特性，对4种常见星座实现的我国中轨TDRSS的覆盖特性和星际链路性能进行了仿真分析和比较。

The property can offer position, velocity, and accurate time navigation information for the spacecrafts in near-earth orbit, geostationary orbit, elliptic orbit or interplanetary orbit.

这一特性使其能够为近地轨道、地球同步轨道、大椭圆地球轨道、地月轨道及星际空间飞行的航天器提供位置、速度和时间等丰富的导航信息。

A new method for measuring near-earth orbit ballistic parameters of multi, faint, small and dim targets is proposed on the basis of analysis and demonstration of sensor selection for multi-target detection, target extraction and data processing.

在对多目标探测所用传感器的选择、目标提取和数据处理等三方面技术问题进行分析论证的基础上，提出了一种新的多、弱、小、暗目标近地弹道参数测量方法。

The paper begins with a brief outline on the recent status of geosynchronous and low/ medium earth orbit satellite communication systems.

本文先全面说明同步卫星和低/中轨道移动卫星通信系统的最新动态。

Double-Layered satellite networks consisting of LEO ( low earth orbit) and MEO ( medium earth orbit) satellites have advantages on networking and communication performances.

由低轨LEO（low earth orbit）和中轨MEO（Medium Earth Orbit）卫星构成的双层卫星网络具有较好的组网通信性能。

Systems analyzed on the design principle of near-earth orbit, regression orbit, stationary orbit, critical orbit and construction orbit. Base on this, a orbit design model is given.

系统研究了近地轨道、太阳同步轨道、回归轨道、静止轨道、临界和冻结轨道的设计原理，在此基础上，建立了轨道设计模型。

The space experiments are carried out in the chinese sixteenth scientific and technological exploration satellite. The satellite was flew around the near-earth orbit about 15 days.

空间实验是在我国第16颗科学探测与技术试验卫星上进行的，卫星在近地轨道运行15天。

Space debris will make available space in the outer space more and more crowded. In particular, the pollution of near-earth orbit space will increase the accident rate in the outer space.

空间碎片会使外空可利用空间越来越拥挤，尤其对于近地轨道空间的污染，会加大外空事故率。

In this paper we did research on the heat flow, temperature, structural changes, and their influencing factors of parabolic satellite antenna in near-earth orbit, which provides future theoretical references for antenna thermal and structural design.

本文以抛物面型星载天线为研究对象，分析其在近地轨运行时的外热流、温度场和结构场的变化情况和影响因素，为天线的热设计和结构设计提供理论依据。

Three-axis stabilized attitude control system for Chinese near earth orbit satellites

中国近地轨道卫星三轴稳定姿态控制系统

Grace was the first to derive the code generators used by the Galileo validation satellites and the first Compass satellite in medium earth orbit.

格蕾丝是首个破解伽利略试验卫星和北斗一代地球中轨道卫星所使用的编码规则的人。

The Design of Regional Constellation Based on Medium Earth Orbit

基于MEO圆轨道的区域性星座设计

Ground-based VLBI Relativistic Time Delay Model for Satellites in High Earth Orbit

人造地球卫星VLBI观测的相对论时延模型

When the low-Earth orbit ( LEO) satellite is low, the contribution of the Total Electron Contents ( TEC) above the satellite is not neglectable for inversion of GPS-LEO ionospheric occultation.

电离层掩星观测中，当低轨卫星（LEO）轨道高度较低时，轨道以上的电离层电子总含量（TEC）对掩星反演的影响不能忽略。

Trains run on a railway track. circum earth orbit

火车在铁路轨道上行驶。地球卫星的环行轨道

China has also put astronauts into Earth orbit and conducted spacewalks.

中国还把航天员送到了地球轨道，并完成了空间行走。

One part, space tourism, is a luxury service that is, in any case, unlikely to go beyond low-Earth orbit at best ( the cost of getting even as far as the moon would reduce the number of potential clients to a handful).

一方面，太空旅行是一项奢侈的服务，不像冲出地球低轨道那么容易（这些如同与月球距离一般可观的巨额花费使潜在客人的数字减少到几个）。

Modelling and analysing of space debris environment in low earth orbit

低地轨道空间碎片环境建模与分析

The station will operate in the low-Earth orbit at an altitude from 340 km to 450 km. It has a designed lifespan of 10 years, but experts believe it could last more than 15 years with appropriate maintenance and repairs.

空间站将在高度340至450公里的近地轨道运行，设计在轨飞行时间可达10年以上。专家表示，如果妥善维护，空间站的在轨飞行时间有可能超过15年。中国载人航天“三步走”战略