非静止轨道卫星

非静止轨道卫星通信系统中星际链路性能研究

Study on the ISLs ' Characteristics of Non-GeostationarySatellite Communication System

非静止轨道卫星网络同频干扰的分析与仿真

The Analysis and Simulation of Co-Frequency Interference in Non - Geostationary Orbit Satellite Network

计算出了几种典型非静止轨道卫星信道的最大多普勒频移。

The maximum Doppler shift in some typical non-GEO satellite channels are figured out .

非静止轨道卫星移动通信系统组网关键技术研究

Research on the Key Technologies of Networking in the NGSO Satellite Mobile Communication Systems

非静止轨道卫星信道多普勒频移特性

Doppler Shift Characterization for Non-GEO Satellite Channels

非静止轨道卫星网络间下行数据传输同频干扰的分析方法

An analysis method of co frequency interference for date transmission in down link between non geostationary orbit satellite networks

由于非静止轨道卫星之间的相对位置关系不固定，所以其星际链路变化比较复杂。

Since the relative position of the non-geostationary satellited is unfixed , the change of their interplanetary links ' ( LSLs ' ) characteristics is complicated .

为了定量分析非静止轨道卫星信道的多普勒频移特性，引入一种基于地心固连坐标系的分析模型，经近似，该模型与地面接收终端的地理坐标无关。

An analysis model based on the earth centered fixed coordinate frame is introduced , for achieving a quantitative analysis of Doppler shift characteristics over non-GEO satellite channels . The model is irrelative to the geographical coordinate of receiving terminals on the ground after approximative processing .

中国政府不满足于国内对北斗系统的采用，还设立目标，决心到2020年，用35个对地静止和非静止轨道的卫星提供覆盖全球的信号。

Not content with the system 's adoption within China , the government has also set the goal of providing global coverage with 35 geostationary and non-geostationary orbit satellites by 2020 .

但是，传统的静止轨道（GEO）卫星通信系统由于固有的缺点，已经难以满足应用需求，研究焦点已经转向了非静止轨道（NGSO）卫星系统。

Whereas , for their inherent disadvantages , the traditional GEO satellite communication systems will be incompetent for some real-time services , so the NGSO satellite mobile communication systems with broadband and QoS guarantee have become the research focus .