(分析VideoNet.docVIP

桂电信科机器人技术研究中心 实验说明书 题 目： 分析VideoNet 系 别： 电子工程系 专 业： 电子信息科学与技术 学生姓名： 段泽全 学 号： 1352400226 指导教师： 王春利 职 称： 讲师 题目类型：?理论研究 ?实验研究 ?工程设计 ?工程技术研究 ?软件开发 ?应用研究 摘 要 通信系统是用以完成信息传输过程的技术系统的总称。系统通常是由具有特定功能、相互作用和相互依赖的若干单元组成的、完成统一目标的有机整体。最简便的通信系统供两点的用户彼此发送和接收信息。在一般通信系统内，用户可通过交换设备与系统内的其他用户进行通信。 现代通信系统主要借助电磁波在自由空间的传播或在导引媒体中的传输机理来实现，前者称为无线通信系统，后者称为有线通信系统。当电磁波的波长达到光波范围时，这样的电信系统特称为光通信系统，其他电磁波范围的通信系统则称为电磁通信系统，简称为电信系统。由于光的导引媒体采用特制的玻璃纤维，因此有线光通信系统又称光纤通信系统。一般电磁波的导引媒体是导线，按其具体结构可分为电缆通信系统和明线通信系统；无线电信系统按其电磁波的波长则有微波通信系统与短波通信系统之分。另一方面，按照通信业务的不同，通信系统又可分为电话通信系统、数据通信系统、传真通信系统和图像通信系统等。由于人们对通信的容量要求越来越高，对通信的业务要求越来越多样化，所以通信系统正迅速向着宽带化方向发展，而光纤通信系统将在通信网中发挥越来越重要的作用。 关键字：通信系统 ；数据 ；图像 Abstract Communication system is used to complete the floorboard of the technology system of information transmission process. System is usually has a specific function, interaction and interdependence of several units, unification of organic whole. The most simple communication system for two users to send and receive information to each other. Within the general communication system, the user can through the switching equipment to communicate with other users in the system. Modern communication system is mainly through the transmission of electromagnetic wave in free space or in the transmission mechanism of guided media to achieve, former known as wireless communication system, which is called wired communications systems. When the wavelength of the electromagnetic wave to light range, such as telecommunication system known as optical communication system, other electromagnetic wave range of communication systems is known as electromagnetic communication system, referred to as telecommunication system. By the light of guidance media USES the special glass fiber, so the cable optical communication system, also known as optical fiber communication systems. Ge