平流层通信在应急条件下的应用

我国是一个自然灾害频发的国家,尤其是西部地区,近些年来地震,泥石流频频发生,对人民的生活造成了极大的损害。灾害发生后,尽快恢复通信,取得与灾区的联系就显得尤为重要,通过简单介绍平流层通信的特点和使用,阐述如何在应急条件下,充分地使用平流层通信,减少人民的生活损失。     

基于公共通信网和信息隐藏技术的军事通信系统初探

随着科学技术的不断进步以及现代化战争对科技应用水平的不断提高,很多先进的科学技术都开始广泛应用于军事领域,对军事通信也提出了更高的要求。本文主要基于公共通信网和信息隐藏技术,结合水印、数字签名、加密码等技术,对现有军事通信系统的基本情况、设计原则以及总体设计方案进行了介绍和探讨,以期增进人们对军事通信系统的了解。     

军事通信抗干扰工程发展策略研究及建议

在阐述军事通信抗干扰装备的覆盖范围和分析外军通信抗干扰发展趋势的基础上，结合我军正在进行的新军事变革和信息化建设，重点研究了我军通信抗干扰工程发展策略的有关问题，并提出了一些初步的建议。     

无人机在干扰卫星通信系统中的应用研究

随着军事信息化程度越来越高，军事卫星通信已成为军事通信和战场通信的重要组成部分。卫星通信干扰和抗干扰技术已受到各国的重视。文章首先分析了干扰卫星通信系统的几种途径，然后分析了无人机在干扰卫星通信系统中的应用及优势。     

浅析目前培养新型通信技术军官的方法与模式

新型通信人才既是通信时代主体的基础需求,也是军事通信时代人才的必然要求,更是军事通信人才适应高科技战场下的必备素质。文章针对我国当前新型通信人才综合素质需求的现状,从多方面提出了培养的方案,探索通信人才培养方法,加快步伐,推进中国军队通信化建设。     

现代通信技术的发展研究

本文阐述了4G通信技术的发展现状及其在军事领域的应用前景。     

基于信息流的军事通信装备管理业务流程优化研究

通过对军事通信装备管理信息流与业务流程关系的分析,提出基于信息流的军事通信装备管理业务流程优化的思路和方法,并对实施业务流程优化应注意的问题进行研究。     

浅谈SDH技术在民航通信中的应用

在民航通信业务数据量不断增长的背景下,SDH技术的应用能够满足民航通信管理的需求。在分析SDH技术的基础上,该文对该技术在民航通信中的应用方法进行了探讨,提出了SDH传输网的组建方案,通过选择相应SDH设备实现了光传输环网的构建,将其用于加强民航通信业务管理,保证民航通信业务的顺利开展。     

雷达通信技术与雷达导航技术的应用

随着我国综合实力的增强,雷达技术也得到了广泛地应用与发展,逐步应用于我国的军事、气象、航空等领域,是我国综合国力增强的具体体现。雷达技术主要包括2种:雷达通信技术与雷达导航技术,这2种技术改变了人们生活的方方面面。该文主要从雷达通信技术与导航技术的原理与应用,以及二者技术结合的应用来进行分析,得出雷达系统的应用实例。随着各国之间竞争的加剧,雷达技术也得到了高速发展,对于国家综合实力包括航空、军事等领域有着举足轻重的作用。     

浅述通信技术在配电自动化系统中的应用

通信网络是智能电网的重要支持平台,以往电力建设在通信网络建设方面,重点放在输电区域,造成了配电区域通信网络基础薄弱,制约配电网智能化发展。本文通过分析了智能配电通信网的特点及发展需求,对无源光网络、无线WiMAX和电力线载波通信技术进行了分析,提出了配电通信网的组建方式和未来发展方向。     

基于移动通信网络的导航定位体系的探讨

因导航定位有不可替代的作用,本文简要介绍了几种常用的导航定位方法,并对几种常用导航定位系统进行阐述,总结归纳了不同导航定位系统的特点.进而,提出了一种基于移动通信网络基站的低成本、高精度、快速、全球导航定位体现框架,并对其特点、优势和技术可行性进行了讨论.该导航体现框架有望在未来的智能交通、智能机器人、智能物流、智能边...     

Coati Optimization-Based Energy Efficient Routing Protocol for Unmanned Aerial Vehicle Communication

With the flexible deployment and high mobility of Unmanned Aerial Vehicles (UAVs) in an open environment, they have generated considerable attention in military and civil applications intending to enable ubiquitous connectivity and foster agile communications. The difficulty stems from features other than mobile ad-hoc network (MANET), namely aerial mobility in three-dimensional space and often changing topology. In the UAV network, a single node serves as a forwarding, transmitting, and receiving node at the same time. Typically, the communication path is multi-hop, and routing significantly affects the network’s performance. A lot of effort should be invested in performance analysis for selecting the optimum routing system. With this motivation, this study modelled a new Coati Optimization Algorithm-based Energy-Efficient Routing Process for Unmanned Aerial Vehicle Communication (COAER-UAVC) technique. The presented COAER-UAVC technique establishes effective routes for communication between the UAVs. It is primarily based on the coati characteristics in nature: if attacking and hunting iguanas and escaping from predators. Besides, the presented COAER-UAVC technique concentrates on the design of fitness functions to minimize energy utilization and communication delay. A varied group of simulations was performed to depict the optimum performance of the COAER-UAVC system. The experimental results verified that the COAER-UAVC technique had assured improved performance over other approaches.     

SAC-OCDMA系统中AWG的应用及串扰分析

概述了阵列波导光栅的特点及其在谱域幅度编码的光码分多址通信系统中的应用。基于地址码M序列,采用数值计算的方法,分析了阵列波导光栅的串扰对谱域幅度编码的光码分多址通信系统误码率性能的影响。结果表明,当阵列波导光栅的串扰较小时(Rc=-27dB),谱域幅度编码的光码分多址通信系统具有较好的性能;而当其串扰较大时(Rc=-20dB),谱域幅度编码的光码分多址系统的性能明显恶化,成为影响谱域幅度编码光码分多址通信系统性能的一个重要因素。     

第三代移动通信--现代无线技术面向IP的应用

文章首先回顾了第一代（模拟）移动通信和第二代（数字）移动通信技术的演进,预测今后10年是移动通信大发展时期,它的用户将超过固定电话用户数。随着因特网的发展,移动通信业务将从话音扩展到数据,移动通信技术也将从电路模式发展到分组模式。文章在简介即将投入应用的第二代半移动通信技术之后,引出面向宽带多媒体应用的第三代移动通信（3GM）,重点介绍了被选作3GM国际无线传输技术标准的几种主流方案及其关键技术,特别对其中由我国提交的TD-SCDMA方案的技术特点作了说明,最后展望了网络如何从第二代移动通信过渡到第三代移动通信及3GM核心网发展趋势。     

一种浅海水声信道分数间隔自适应均衡算法研究

水声信道是最为复杂的数据通信环境之一,而具有重要军用和商用价值的浅海水声信道,其多径与频散效应更为严重。在浅海水声数字通信中,普遍存在着码间干扰和码内干扰效应,严重影响了水下通信的速度和质量。在判决反馈结构的基础上,采用分数的方法,提出了一种适用于浅海水声信道的自适应均衡算法,并通过计算机仿真实验与整数方法进行了性能对比。传输信号采用正交相移键控调制方式,以有效利用有限通信带宽。仿真结果表明,该算法获得了较快的收敛速度和较小的稳态误差,提高了水声通信的有效性及可靠性,因而具有良好的工程应用价值。     

分布式控制系统的主从式RS—485多机通信

本文阐述了分布式控制系统的RS—485主从式多机通信原理和实现方案,介绍了RS—485串行通信接口标准和转换电路,说明了8031单片机系统RS—485多机通信的软硬件设计方法．     

天基多媒体移动通信网的QoS综合评判模型

简要分析了天基网上多媒体通信的QoS要求，阐述了其QoS的主要参数指标。基于多元信息处理技术与层次判决提出了天基多媒体移动通信网（MWAN）的QoS综合评判模型，结合实例说明了具体的评判过程，该模型具有简洁、可操作性强的特点，可供从事卫星移动通信、多媒本通信相关人员参考。     

Software-Defined Space-Air-Ground Integrated Network Architecture with the Multi-Layer Satellite Backbone Network

Under the background of the rapid development of ground mobile communication, the advantages of high coverage, survivability, and flexibility of satellite communication provide air support to the construction of space information network. According to the requirements of the future space information communication, a software-defined Space-Air-Ground Integrated network architecture was proposed. It consisted of layered structure satellite backbone network, deep space communication network, the stratosphere communication network and the ground network. The SpaceAir-Ground Integrated network was supported by the satellite backbone network. It provided data relay for the missions such as deep space exploration and controlled the deep-space spacecraft when needed. In addition, it safeguarded the anti-destructibility of stratospheric communication and assisted the stratosphere to supplement ground network communication. In this paper, algorithm requirements of the congestion control and routing of satellite backbone protocols for heterogeneous users’ services were proposed. The algorithm requirements of distinguishing different service objects for the deep space communication and stratospheric communication network protocols were described. Considering the realistic demand for the dynamic coverage of the satellite backbone network and node cost, the multi-layer satellite backbone network architecture was constructed. On this basis, the proposed Software-defined Space-Air-Ground Integrated network architecture could be built as a large, scalable and efficient communication network that could be integrated into space, air, and ground.     

Optical systems design for a stratospheric lidar system

The optical systems for the transmitter and receiver of a high-power lidar for stratospheric measurements have been designed and analyzed. The system requirements and design results are presented and explained. An important and driving factor of this design was the requirement for a small image diameter in the plane of an optical chopper to allow the high-intensity lidar returns from the lower atmosphere to be shielded from the detection system. Some results relevant to the optical performance of the system are presented. The resulting system has been constructed and is now in operation at the Mauna Loa Observatory, Hawaii, and is making regular measurements of stratospheric ozone, temperature, and aerosol profiles.