通信系统

As to the asymmetry phenomenon of current duplex communication terminal of wireless communication systems in the short-range open segment,intelligent RF transceiver dual-use hardware terminal system is designed.

针对目前短程开放段无线通信系统双工通信终端不对称现象，设计智能化无线射频收发两用硬件终端系统。

In communication system software (such as IBM's ACF/VTAM),pertaining to a resource that has not been activated or has not been deactivated by a operator command.

在通信系统软件(如IBM的ACF/VTAM)中，指没有通过通信系统操作员命令激活或释放的资源。

On the basis of setting up a model of the parallel transmission link of short-wave data communication system, this paper analyses the anti-noise performance of data communication in a non-selective Rayleigh gradually fading ionosphere channel, and derives the average error code rate formular and its curves.

在建立并发制短波数据通信系统模型的基础上，分析了非选择性瑞利慢衰落电离层信道中数据通信抗噪声性能，并导出了平均误码率公式，生成了误码率曲线，为雷达情报短波数据通信链路的仿真及效能评估提供理论依据

Furthermore, a communication system based on an OFDM system is utilized for data transmission of a plurality of subchannels.

此外，将基于OFDM系统的通信系统用于数据通信的多个子通道。

Its study has practical mean to power distribution network' s reconstruction and reform and improvement of automation in power system.

本文提出的基于OFDM调制和电力线通信技术的配电自动化通信系统，对中、小城市和城镇的配电自动化系统的实施具有很好的参考价值。

Satellite channel simulator can simulate transmission characteristics of electromagnetic wave close to real channel environment.

卫星移动通信系统已经成为当前通信领域中发展非常迅速的研究方向和现代化通信强有力的手段之一。

Check for SBCS Shanghai Mass Transit Line 7 provides a 2 HiPath4000 real-time communication systems, and in 33 different remote site HiPathAP3700IP modules deployed to ensure that on the 7th line and other lines of communication between the systems integration, the total number of 6,120 subscriber lines.

SBCS为上海轨道交通7号线全线提供了2套HiPath4000实时通信系统，并在33个不同的站点部署了HiPathAP3700IP远端模块，以确保7号线与其它线路间的通信系统整合，用户线路总数达6，120。

It is important to evaluate the antijamming ability of the short wave hopping communication system in real warfare.

实战条件下如何评价短波跳频通信系统的抗干扰性能是构建短波跳频通信系统的重要环节。

Communication system architecture of a stratospheric telecommunication network was developed by Sky Station International Inc .

平流层通信系统是由美国空间站国际公司提出的一种崭新的通信系统。

At the beginning the dissertation introduced the new techniques and methods in modern HF communication, and then put emphasis on the introduction of ABCS, including its basic theories, main characters and advantages over traditional HF communication system.

论文首先介绍了现代短波通信中的新技术与新体制，然后重点介绍了陆建勋院士提出的ABCS通信系统，分析了ABCS的理论基础、主要特点及相对于传统短波通信体制的优势。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。