通信的

During flying, the tethered aerostat can carry communications equipments (such as base station at high altitude) and enlarge communications coverage so as to carry out emergent communications in disaster areas.

可搭载通信设备升空，提高通信覆盖范围，实现灾区应急通信；也可搭载光学成像设备，在社会重大活动中提供公共安全监视功能，是理想的应急通信和监视平台。

In order to be able to transmit a variable volume of data, particularly in a single coherent data block, between message transmission planes of telecommunications interfaces of a hybrid telecommunications system with minimal effort within the message transmission planes, if the variable data volume exceeds the maximum data volume which can be transmitted between the same message transmission planes of the telecommunications interfaces, then a data element specific to the transmission layer is used as a function of the varying data volume at least twice in succession for the transmission of the data volume in the data block.

要約 为在混合通信系统中能各自以最小的传输工作量在各通信传输层面中传输混合通信系统各通信接口的通信传输层面之间的一个变化的数据量，尤其当此变化的数据量超过在各通信接口的相同通信传输层面之间最大可传输的数据量时仍能在一个单一的互相关联的数据块中传输此变化的数据量，取决于此变化的数据量至少两次依次地对在数据块中的数据量的传输采用一种传输层面专门的信息元素。

The spread spectrum communications are widely used in modern military communications, satellite communications, mobile communications and command, control, communication and intelligence( C~3I ) systems, because of its well multi-address access, low probability of interception, excellent performance of anti-jamming and secrecy.

扩展频谱通信作为新型的通信方式，由于其具有多址接入、低载获特性和较强的抗干扰能力，因此在现代军事通信、卫星通信、移动通信和指挥控制通信和情报(C~3I)系统中得到了广泛的应用。

Then the implementation scheme of multimedia communication terminal based on PC is presented, and the structure of hardware and software is given.

多媒体通信技术可分为三部分：即多媒体通信终端技术、支持多媒体业务的通信网络和多媒体通信应用系统。

PLC and IPC programming mouth communication Mitsubishi FX-based PLC and IPC communication between, and its communication programs have the following options, such as N: N network, parallel link, computer links and non-protocol communications.

PLC与工控机的编程口通信三菱FX 型PLC与工控机之间进行通信，其通信方案有以下方案可供选择，如N：N网络、并行链接、计算机链接和无协议通信等。

There has also introduced a multi-function human scale of the control module and other parts of the communications, with the keyboard and display and voice communication is part of the serial communication but also to establish communication protocol, and the printer is parallel communication.

除此以外还介绍了多功能人体秤主控模块部分与其他部分的通信，与键盘显示和语音部分的通信是串行通信还要建立通信协议，而与打印机则是并行通信。

In order to realize the compatible communications system between digital TETRA and analogy MPT1327. Communications protocol between digital radio and control center is defined. Emergency call software flow for TETRA and MPT module is designed, and also state information sending and receiving for TETRA and MPT module is designed in this communication system. By comparing several solutions, switch methods between analogy TETRA communications and digital TETRA communications are designed including manual-switch and soft-switch. In the article, coding module of receiving and sending equipments in TATT analogy TETRA communications is described, so that it can be compatible with NOKIA network equipments and it also can improve the availability rate of the trunk system. In order to realize the integration of digital TETRA communication and analogy MPT1327 communications, double- frequency antenna system is researched.

通过几种车载电台解决方案比较，设计了相应的模拟集群通信系统与数字集群通信系统的切换方法，其中包括人工切换和软切换，实现了模拟与数字集群兼容的一体化移动列车调度电台解决方案；为了实现数字集群通信系统与模拟集群通信系统以及NOKIA与TAIT模拟集群通信系统之间的相互兼容，设计了新的数字车载电台与控制中心之间的通信协议；系统设计了用于数字集群通信模块的紧急呼叫通讯流程，以及设计了用于模拟集群通信模块状态信息发送与接收流程，以满足列车无线调度的运营要求；论文还论述了对TAIT模拟集群收发设备编码模块的改造，使之能与NOKIA的集群设备相兼容，提高了集群设备的利用率，为在NOKIA模拟集群通讯模块停产后寻找了一种可替代的兼容解决方案；为了实现数字集群通信系统与模拟集群通信系统设备的综合，论文还探讨了本工作所需专用的双频段的天线系统。

When a switch for recieving a waiting and a switch for an information communication are carried with a turned-on power supply, a data which represents a communication mode is drawn out in P_REV field P1,P2, came from a re-captured base station, such as ESPM, EHDM, GHDM ect., a display indicative, which represents the communication mode used by the captured base station, produced by the drawn-out data, is displayed in the PICI information display region of a LCD display.

一种移动通信终端装置，为了在信息通信过程中使用户能够确认可以使用的通信方式而事前回避进行不情愿的通信，在电源被接通时、进行接收等待中的切换时、以及进行信息通信中的切换时，由来自重新捕捉到的基站的ESPM、EHDM或GHDM等的P_REV域P1、P2中抽出表示通信方式的数据，根据此抽出的数据生成表示上述被捕捉到的基站使用的通信方式的显示标志、在LCD显示器的PICT信息显示区域中显示。

The communication systems wildly used nationally and internationally, such as audio frequency wire communication, carrier-current communication, micro-wave communication, optic-fiber communication, expanding frequency communication and satellite relay communication, are investigated in detail. The different communication systems used in Changsha County electric power systems are analysed in detail.

对目前国内外使用较多的一些通信方式如音频线通信、载波通信、微波通信、光纤通信、扩频通信、卫星帧中继通信等进行了较为深入的分析和研究；对目前长沙电力局正在使用的变电站与调度端的通信方式——进行性价比方面的分析比较，综合以上，得出了最为合适的变电站到调度端的通信方式。

Taking the communication server as the core,the data transmission layer collects data from other intelligent devices with 103 protocols,Modbus protocols,pro-bus protocols or TCP / Modbus protocols,which are converted as dual Ethernet network data and then transmitted to monitoring system and dispatch center via hub.

重点介绍了通信网络的构成，网络管理层基于TCP/IP的以太网络通信，采用站内103通信规约，数据传输层以通信服务器为核心，向下采集其他智能设备数据，支持任何采用103规约及采用Modbus通信规约、pro-bus通信规约或采用TCP/Modbus协议的智能设备，并将采集到的数据转换成以太网双网数据，通过交换机上传至监控系统及调度中心。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。