According to the principle and methods of chaos, based on logistic map and henon map of chaos system and made it produce chaos sequence by method of multi-values sequence, the network data stream was encrypted and disordered by the sequence, the feasible and the influence factors on chaotic secrecy communication were presented.
按照混沌加密原理及方法，采用混沌系统中的Logistic映射和Henon映射，利用多值序列的方法所产生的混沌序列对于网络流进行加密和置乱，并计算研究了该方法的可行性和具体实施中影响因素及其作用。
Then the research on hard structure of sensors node, power management and communication model are described, here we devote our attention to the research on multi-CPU communication based on serial port, and one conclusion is obtained that the Node data receiving and transmitting is very simple and reliable due to the use of interruption and finitude vectors map.
我们研究了网络中节点的硬件组织、电源特征和通信模式，重点介绍了基于串口的多微处理器通信技术。由于采用了中断和有限状态图，节点数据收发的实现简单可靠。网关将传感器网络所采集的信息发送给外部网络，我们采用带有 GSM 模块的网关来实现这一功能。
GIS can deal with the difficult problem. GIS can digitize the unwieldiness map and provide us with facile reliable search and this makes management of mobile communication pipelines easy.
GIS系统的引入解决了上述问题，它可以将笨重的图纸数字化，并提供了灵活、可靠的查询、修改方法，极大地方便了移动管网的管理和维护。
Star sensor; star-map component; communication component; digital star simulator system
星敏感器；星图组件；通信组件；数字星模系统
Net and embedded microprocessor ARM9 were applied to develop a portable GPS navigation instrument, in which the GIS functions were realized on S3C2410 board, and GIS was integrated with GPS to realize map database search, position navigation, routine optimization, wireless communication, electric map update and so on.
net和嵌入式微处理器ARM9，开发了手持式GPS导航定位仪。系统主要包括两部分：一是在S3C2410开发板中实现了GIS功能，二是实现了GIS与GPS的集成，实现了地图数据库查询、定位导航、路径寻优、无线通信、电子地图更新等功能。
The linearity and stability of RF PAs for wireless communication are analyzed in this dissertation. The principal contributions of this dissertation include:The envelope elimination and restoration technique has been widely applied to improve the efficiency and the linearity of RF PAs simultaneously. A new method is proposed to analyze the intermodulation distortion of RF PAs with EER. A general simplified model for IMD is founded which varies with the bandwidth of envelope path and the differential delay between envelope and phase signals, and overcomes the limitation of Raab`s model which can only solve such two specific instances as zero differential delay and infinite bandwidth of envelope path. A contour map derived from the general model in this dissertation is helpful for the designers to choose circuit parameters quickly and accurately. A novel adaptive delay-control method, implemented in the baseband, is presented to improve the linearity of RF PAs with EER. This method can be applied to the linearization of wideband PAs and makes the RF PAs easy to meet the spectral mask specification of IEEE 802.11b wireless communication systems with 11MHz-bandwith effectively.
本论文研究了用于无线通信的射频功率放大器的线性化和稳定性，完成了以下工作：1包络消除与恢复技术能同时提高射频功率放大器的效率和线性度，本文提出了一种新的分析其交调失真的方法，建立了交调失真随包络通道带宽和包络相位延时差变化的通用简化模型，该简化模型克服了Raab模型只能处理零延时差和无穷包络通道带宽这两个特例的局限性；采用本文模型得出的交调失真等高线图还可以帮助设计者快速准确地选择电路参数。2针对包络消除与恢复结构的特点，提出了一种全新的在基带进行自适应调整延时的线性化方法，这种方法适用于宽带功率放大器的线性化，对于信号带宽为11MHz的IEEE 802.11b宽带无线通信系统，根据这种线性化方法设计的射频功率放大器，能有效达到系统谱罩要求。
In my book, I talk about differences in the study of political economy in communication, and of course I can give you many details, what I can do is very briefly refer to three different areas of emphasis in the contemporary political economy of communication that provide the map of the field.
在我的书中，我谈到了传播政治经济学研究的不同之处。当然我可以给大家讲很多详细的问题，但今天我只能简要地谈谈当代传播政治经济学重要的三个不同地区，这样给大家勾勒一幅这个领域的地图。
When the text just began, have spoken the principle picture of KCB-3 sensor and function of relevant chips in detail, have analysed its weak point too; In the part of the hardware, have introduced 8031 one-chip computers, the line map of the communication, enlarge the circuit and connection and function of straining the wave circuit, there is impedance about the sensor that is matched; In the part of the software, have introduced the relevant procedures and frame pictures of signal gathering and communication part mainly.
在正文刚开始时，详细讲了KCB-3传感器的原理图和相关芯片的作用，也分析了它的不足之处；在硬件部分，介绍了8031单片机，通讯线路图，放大电路和滤波电路的连接和功能，还有有关传感器的阻抗匹配；在软件部分，主要介绍了信号采集和通讯部分的相关程序和框架图。
The defect that there are potential pressure of mobility anchor point (MAP) load and high communication cost in multilevel hierarchical mobile IPv6 are analyzed.
分析了多层移动IPv6结构中存在移动锚点潜在负载压力大及通信开销高的弊端。
Creative Graphics Art and Design Visual Communication are an important part of it has its own " map " and " shape " of the Organization and the law of creation.
图形创意是视觉传达艺术设计的重要组成部分，它有着自身图与形的组织方法与创作的规律。
The achievement of the key technology of electronic map services, such as asynchronous communication, transmission formats, data transfer, this paper carried out research and application.
对实现电子地图服务的关键技术，如异步通信，传输格式，数据转换等，本文进行了研究和应用。
This article introduces the general structure of EZ-USB chip, and specifies its memory map, enumeration and renumeration mechanism, and bulk transfer mechanism. The hierarchic driver model and the communication process of the host are also included.
介绍了EZUSB芯片的整体结构，对它的内存结构、列举与重列举机制和批量传输机制进行了详述，并简要描述了USB的分层驱动模型和主机通信过程。
The automotive reliability monitoring management system realizes monitoring management of automotive reliability tests and remote measurement, record and storage and summary report of test process mode parameters with syn-thetically using the DGPS, map matching, communication and computer technology.
汽车可靠性试验监控管理系统综合运用差分卫星定位、地图匹配、通信及计算机技术实现了对汽车可靠性试验监控管理和试验过程工况参数远程遥测、记录存储及汇总报表。
The electronic digital map of ground conductivities is very important and useful to radio systematic engineering such as time service, navigation, communication and broadcast, etc.
大地电导率电子数字地图对于无线电授时、导航、通信、广播等系统工程有重要应用价值。
The paper investigates more the structure of GIS based on the modes of C/S and B/S, adopts the methods of separated organizing and uniform managing to the vector background relief map and spatial data of communication equipment connection.
着重研究了基于C／S和B／S模式的GIS系统架构。采用矢量背景地形图与通信设备线路空间数据分开组织、统一管理的方法。
The Log-MAP arithmetic is simplified in order to be realized more easily by the DSP chip and meet the request of the channel coding in the optical space communication system.
对Log-MAP算法进行简化，使之更有利于DSP实现，同时能够满足空间光通信系统中信道编码的要求。
This system has the following features: (1) Pass through the site 485 bus which connect to Ethernet communication; 2 Map sensor cable system position to the site scientific equipment.
该系统有以下几个特点：1.可通过现场485总线连接到以太网通讯。2.系统映射传感电缆位置到现场科研设备。
GIS technology is a kind of popular technology in recent years, utilize building our communication resource administrative system ocularly of the electronic map, can improve our management level.
GIS技术是近年来流行的一种技术，利用电子地图的直观性建设我们的通信资源管理系统，能够提高我们的管理水平。
Besides opening a communication channel, this link allows you to map your enterprise application's datasource JNDI names.
除了打开一个通信信道之外，该链接还允许您映射企业应用程序的数据源JNDI名称。
The technique combining MAP-based multi-user detection (MUD) with channel decoding can greatly improve performance and capacity of broadband CDMA mobile communication systems.
联合MAP多用户检测与信道解码的迭代多用户检测（MUD）技术可显著提高宽带移动CDMA系统的容量和性能。