正确认识无线电频谱监测统计在无线电管理工作中的作用

“管好频率、管好台站、管好秩序”是无线电管理的三大任务。台站管理是手段，秩序管理是目的，频率管理是重点，而无线电频谱监测则是基础，只有扎实、认真地做好这项最基础性的工作，才能使无线电管理三大任务的顺利实施得到保障。因此，今年初信息产业部无线电管理局开展了无线电频谱监测统计工作，目的就是要以其作为推进工作的抓手，纲举目张，将无线电管理的三大任务由过去相对分割的“单兵”作战局面，变为相互“串联”、[第一段]     

地市级日常无线电监测工作探讨

无线电管理一般围绕频率管理、台站管理和无线电监测三项主要工作展开。国家、省和地市级无线电管理机构在开展这三项工作时重点是不同的，地市级无线电管理机构工作重点是无线电监测。这是因为无线电监测作为一种维护空中电波秩序的重要技术手段，是无线电管理工作的“眼睛”和“耳朵”。现实中无线电频谱的占用情况常常和理想情况相差甚远，电磁环境十分复杂，原因多种多样。     

无线电监测系统使用心得

无线电监测工作是基层无线电管理部门重要的日常工作之一。“十五”期间全国无线电监测网建设有了长足发展，无线电监测网系统逐步完善。基层的无线电监测系统必将在无线电频率资源、台站管理、空中电磁环境保护等方面发挥重要作用。     

民航无线电监测专用系统DFA-1简介

概述 为从事民航无线电管理的部门和人员提供有效的监测手段，研制实用的监测系统，能对民航调度频率进行全面监测、监听、录音、保存，能进行音频频谱分析，及时发现干扰并报警，使无线电管理人员及时掌握民航频率使用情况，并掌握干扰的资料和证据，对保障民航飞机飞行安全是非常必要的。     

加强规范化建设，综合提升无线电管理能力

无线电管理就是贯彻"科学管理、促进发展"的方针,以技术、法律(法规)、经济、行政等手段来实现无线电管理的目标,保证合理有效地利用无线电频谱和卫星轨道资源.利用科学、量化、可操作的手段对频率资源实施科学化、制度化、规范化的管理,一直是无线电管理人探索和追求的目标.     

无线电频谱监测统计在无线电管理工作中的作用

随着我国科学技术的不断发展,无线电技术也相对成熟;但是随着无线电技术的应用的广泛,对于无线电频谱资源的需求也逐渐的增加,所以无线电管理机构,就要根据其管理内容,合理的制定无线电频谱监测规划,然后布置各种监测任务,保证其无线电管理的价值意义。对此本文作者依据多年工作经验,就无线电频谱监测统计在无线电管理工作中的作用研究分析,以便与同行切磋与交流。     

网格化无线电监测初探

为有效提升频率资源利用率,强化频率使用监管机制,开展频谱管理新技术的研究。网格化无线电监测系统作为下一代无线电监测网络的发展趋势之一,受到无线电管理部门的广泛关注。首先分析了传统无线电监测面临的挑战和网格化监测的特点,进而探讨了网格化无线电监测系统的体系结构、关键技术及其应用。可以发现,将网格技术应用于无线电监测,形成网格化的监测模式,可以有效提高电磁环境监测能力。     

折合振子天线的设计及在无线电领域的应用

随着无线电业务突飞猛进的发展,对无线电频谱资源的管理和监测提出了新的挑战,无线电电磁环境日益复杂,频率供需矛盾日趋尖锐.这些问题都对无线电监测手段提出了更高的要求,希望设备更加智能化、宽带化、小型化,希望在接收无线电的同时保证无线电信号的高质量、不失真.而天线是无线电监测设备的重要部件,是整个无线电波接收过程的入口.天...     

关于无线电电磁频谱与评估的研究

无线电电磁频谱是看不见摸不着的,但确是我国重要的战略资源,所以,我国十分重视对无线电电磁频谱的管理和开发.但是目前我国在无线电电磁频谱使用和资源都是具有局限性,但是百姓的需求却不断的增加,因此,如何提高无线电电磁频谱的使用效率,减低无线电频谱资源的浪费,成为了研究的重点内容和方向.因此,本文主要针对无线电电磁频谱从时间、空间以及频率三方面进行详细的分析和评估,从而为实现无线电电磁频谱的大范围使用奠定基础.     

充分发挥监测月报在无线电监管中的基础性作用

0前言"管好频率、管好台站、管好秩序"是新时期无线电管理工作的三项核心职能,亦是其本质内涵。台站管理是手段,秩序管理是目的,频率管理是基础,无线电频谱监测则是基础的基础。只有扎实、认真地开展无线电监测工作,才能使无线电管理的三大任务     

在SDR中利用软件无线电技术

尽管SDR概念已经在军用领域使用多年,但直到近期,成本敏感产品如汽车收音机和手机的设计者才得以认真考虑基于SDR的解决方案.摩尔定律和相应的利用数百万晶体管来制造高计算密集性信号处理芯片的能力是一项重大进展.NXP半导体的工程师已经创造了一种高度灵活的SDR概念,其中信号处理模块成为可以在不同标准之间共享的功能.本文中的汽车无线电接收机解决方案采用NXP及其合作伙伴拥有的嵌入式数字信号处理内核尖端技术,可立即适应目前在汽车中使用的一系列无线电标准,甚至可以利用软件来适应新的标准.     

新的无线通信技术：软件无线通信

无线通信技术近年来有了飞快的发展，正从第一代的模拟无线通信迈向第二代数字无线通信，现在新一代无线通信技术：软件无线通信正在兴起。本文就什么是软件无线通信？它的主要特点是什么？它和数字无线通信有何区别？有何优越性？等问题作了一些介绍。     

Radio Revolutionaries

Vanu, a small Cambridge, Mass.-based company, has developed a cellular base station that can simultaneously process two waveforms - CDMA and GSM - all in software running on off-the-shelf computer servers. This would allow cellphone carriers to handle calls based on more than one telecom standard with a single base station. The key benefit offered by this technology is that it replaces costly radio equipment with much smaller, off-the-shelf servers running specialized code. Monitoring and troubleshooting can also be handled remotely, and upgrades involve simple software uploads, rather than expensive hardware overhauls     

Radio telescopes

A radio telescope is used in radio astronomy to measure the intensity of the radiation received from various parts of the sky. Such a telescope must be able both to detect and to locate faint radio sources of small angular size, and also to measure the brightness distribution across extended radio sources or over large sky areas. Ideally the telescope should be capable of making such measurements over a wide frequency range and for different types of polarization of the incoming waves. The noise powers available in radio astronomy are very small, and some of the radio sources have angular sizes or angular structure of, perhaps, only one second of arc, so that a radio telescope needs both high gain and good resolving power. The paper describes various types of radio telescopes which have been built and tested, and outlines the astronomical needs which they fulfill. The parabolic reflector antenna is first described, with particular reference to the fully steerable 210-foot telescope at the Australian National Radio Astronomy Observatory and to the 300-foot transit telescope at the U. S. National Radio Astronomy Observatory. Of the telescopes which use fixed or partly fixed reflector surfaces, those at the University of Illinois, at the Nançay station of the Paris Observatory, and at the Arecibo Ionospheric Observatory in Puerto Rico are described in some detail. Instruments in which the resolution is improved without a corresponding increase of collecting area, such as the cross-type antennas, are briefly described. The future progress of radio telescope design is certain to follow the development of parabolic dishes to still greater sizes, and the exploitation of synthetic antenna systems; the article concludes with a survey of both developments.     

Viral Radio

This paper defines a domain of study, some experiments and a research agenda to explore a topic we term viral radio. The premise is that we can make energy- and spectrum-efficient radio communications systems that scale (almost) without bound. We do this by treating the RF signals in a given space as a distributed optimisation process whereby each radio uses the presence of other radios to assist and cooperate in the delivery of messages. Any relaying that occurs is done in the RF domain; we thus eliminate delays normally associated with multi-hop ad hoc networks. Further, we embed the routing decision in the RF processing and view it as a matter of 'flux-propagation' rather than path definition — data is delivered from a source transmitter to the ultimate recipient with some RF amplification provided by any radios that are in the propagation path. Our goal is to develop a simple radio networking architecture organised on an end-to-end design basis. We expect that we can build scalable and efficient real-time telecommunications and broadcast systems that rely on no central radiator or suite of cell towers.