最后，给出了通过卫星信道时的实验数据。
Finally, experimental results are shown for signals through the satellite channel.
文中提出适应卫星信道特点的快速分组交换方法。
This paper puts forward the improved fast packet switching machanism that is compatible with the satellite features.
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.
系统在海事卫星信道上进行调试并运行，运行效果达到了预期。
The system has been tested and run on the Marine Satellite Channel and it has met the system requirements.
数字信道的传输媒体可以是光缆、数字微波、卫星信道等各种手段。
The transmission medium for a digital channel can be opticalcable, digital microwave link and satellite circuit, etc.
很多国家在建立了低轨卫星系统的同时，进行了卫星信道模拟器的研究。
Many countries get to research satellite communication channel emulator while building up low-orbiting satellite communication system.
在平坦衰落假设基础上，分析了QPS K信号通过移动卫星信道的非线性性能。
The performance of QPSK signal transmitted through nonlinear mobile satellite channel is analyzed based on presumed frequency non-selective fading.
该文利用卫星信道的特点，提出了基于最大熵的盲分离算法，极大地减小了计算量。
However using the characteristic of satellite channel this paper put forwards the blind separation algorithm based on maximum entropy which can deduce the calculation too much.
低轨卫星的信道与地面无线信道具有不同的特点，低信噪比与大多普勒频移是低轨卫星信道的两个显著特征。
The channel of LEO satellite is different from wireless channels on the ground. Low SNR and large Doppler shift are the two characteristic of LEO satellite channel.
结果表明移动卫星信道中存在的多径和阴影现象使系统的误码性能恶化，而采用宽带扩频调制则可极大改善系统的性能。
Based on the model, the BER Bit Error Ratio performance is analyzed for narrow-band modulation and wide-band spread -spectrum modulation of coherent PSK Phase Shift Key...
网关采用该协议将TCP连接分段，在应用中明显地改善了TCP在宽带卫星信道上传输的性能，增加TCP的信道利用率。
The IP Gateway uses this protocol to segment the TCP connection, improve TCP performance and efficiency obviously and increase channel utilization in application.
本文利用全阴影模型的研究结论，就实际陆地移动卫星信道部分阴影模型的仿真问题，拟合了模型参数与卫星仰角之间的关系。
These research results have been used to design the partial shadow model for simulating the same channel of LMS. The author fits the curves between the model parameters and satellite elevations.
相对于一般的通信系统而言，低轨卫星通信系统具有信号动态范围大，多普勒频移大且变化速度快，信道起伏剧烈等特点。
LEO satellite communication system has the properties of larger power dynamic range, larger and faster changed doppler frequency shift and rapid fluctuation compared to ordinary communication system.
本文讨论了ALOHA、SCPC-DA等卫星通信系统中用随机方式占用卫星公用信道的碰撞概率问题。
The collision probability of randomly occupying the satellite common channel on the satellite communications system of ALOHA, SCPC-DA etc.
本文阐述陆地移动卫星通信系统(LMSS)及其信道传输的性能和特点。
The paper introduces the land mobile satellite communication system (LMSS) and its channel transmission performance and features.
第二、穿过随机电离层卫星信号二阶统计特性和电离层信道统计特性研究。
Second, the second-order statistical characteristics of satellite signals propagating through the turbulent ionosphere and properties of the ionospheric channel are also studied.
其次，本文对低轨卫星移动通信信道模型进行了详细的分析。
Secondly, this paper gives a detail analysis for mobile communication channel model of low-orbit satellites.
在降雨环境中，进一步研究了卫星通信系统在QPSK调制和4qam调制下的信道容量的概率分布。
In the rainfall circumstance the probability distribution of satellite channel capacity is analyzed in QPSK modulation and 4qam modulation.
这些都将为下一步在硬件平台上实现低轨卫星移动通信信道模拟器奠定了基础。
All these will afford more detailed theoretical basis for further studying and simulating low-orbit satellite mobile channels simulator in the hardware platform.
另外，他还参与数字电缆和卫星电视接收机的射频部分研发并领导电缆电视上行信道工程。
In addition, he was also engaged in the RF front-end development of cable and satellite for digital TV and led the project return channel for cable.
此外，本文还对卫星移动通信信道模拟器进行了分析，并提出了其初步整体设计方案。
In addition, the paper also analysis mobile satellite communication channel simulator, and gives its initial general design.
与有线数字电视和卫星数字电视相比，地面数字电视传输系统中的信道环境要复杂的多。
Compared with cable digital TV and satellite digital TV, channel to the environment of terrestrial digital TV transmission system is more complex.
并结合具体的卫星移动通信信道的复杂时变特性，对SCTCM在该信道下的误码率(BER)性能进行了理论分析，给出了误码率的一个上界。
According to the complicated time varying property of the satellite mobile communication channel, the BER performance of SCTCM in this kind of channel is analyzed and an upper bound is given.
由于卫星通信信道长，传输距离远，电波要穿过对流层和电离层，易使信号衰减，引入噪声，造成误码。
Due to satellite communication's long channel, far distance transmission and its wave through troposphere and ionosphere often brings the signal deamplification, noise and wrong code.
测试低轨卫星移动通信信道模拟器的硬件性能。
Test the specification of the LEO satellite communication channel simulator.
卫星通信信道具有功率受限、带宽充足的特点，要求采用具有强大纠错能力的信道纠错技术。
Satellite communication channel has the characteristic of power limited, band abundance, and powerful error correcting ability FEC scheme is needed.
本课题在业务信道和终端两个方面实现了对卫星会议电视系统的网络管理，对新体制卫星网上的会议电视网管系统进行了探索性的研究。
The paper takes a groping research on the satellite videoconference network management system based on a new mechanism, and realizes its management on both service channel and terminal.
同时，信道模拟器的硬件实现可以为卫星通信系统的工程设计提供强有力的调试手段，具有十分重要的意义。
Meanwhile, the implementation of the channel simulator is so significant that it can provide a strong debug method for the system design and testing.
多信道共用技术已经广泛应用于卫星通信、移动通信、以及其它类型的通信系统。
The multi-channel sharing technique has already been widely applied to communication field such as satellite communication, mobile communication and other type of communication systems.
这导致了高度优化卫星平台时动态地配置，并且在过量的32个信道中的静态配置提供多达24个信道通过单个同轴电缆。
This results in a highly optimized satellite platform offering up to 24 channels over a single coax cable when configured dynamically, and in excess of 32 channels in a static configuration.
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