卫星通信

Since the emission of the first artificial satellite by Soviet Russia in 1957, satellite communication technology has taken quite great development.

自从1957年前苏联发射的第一颗人造地球卫星诞生以来，卫星通信技术取得了长足的发展。

Satellite optical communication is considered the only way to overcome the bottle-neck in high speed satellite communication.

卫星光通信被认为是解决卫星通信高码率"瓶颈"问题的唯一途径。

Positive support will be given to the development of commercial broadcasting and telecommunications satellites such as geo-stationary telecom satellites and TV direct broadcasting satellites with long operating life, high reliability and large capacity, so as to form China's satellite telecom industry

积极支持商用广播通信卫星的发展，开发长寿命、高可靠的大容量地球静止轨道通信卫星和电视直播卫星，初步建成中国卫星通信产业。

Positive support will be given to the development of commercial broadcasting and telecommunications satellites such as geo-stationary telecom satellites and TV live broadcasting satellites with long operating life, high reliability and large capacity, so as to form China's satellite telecom industry.

积极支持商用广播通信卫星的发展，开发长寿命、高可靠的大容量地球静止轨道通信卫星和电视直播卫星，初步建成中国卫星通信产业。

In satellite communications, the point at which the satellite is at a minimum distance from earth in its orbit.

在卫星通信技术中，卫星在其轨道上离地球距离最近的位置。

The LEO/MEO satellite constellation is the research focus of modern satellite communication system.

LEO/MEO双层卫星星座是现代卫星通信系统星座研究的热点。

The LEO/MEO satellite constellation is the research focus of modem satellite communication system.

LEO／MEO双层卫星星座是现代卫星通信系统星座研究的热点。

5DB coding gains can be achieved by using trellis-coded 16-ary QAM with respect to uncoded eight-PSK on such a channel condition. The expansion of power spectrum density is also analyzed and calculated.

本文基于卫星通信系统是一个功率受限和带宽受限系统这一特点，研究了带限非线性卫星信道的格型编码调制技术。

It can be used in the tracking system of a mobile satellite communication system to make the beam of the directional antenna on a vehicle point to the satel...

该系统能消除载体的变速运动对输出航姿角的影响，结构简单、紧凑，成本较低，可用于定向性移动卫星通信天线跟踪卫星的开环控制系统中。

The Guangdong Satellite communication Bureau is a Hi-tech company majored in satellite communication.

广东省卫星通信局是中国电信属下主营卫星通信的高科技企业。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐