1、COMMISSIONELECTROTECHNIQUEINTERNATIONALECISPR21INTERNATIONALELECTROTECHNICALCOMMISSIONDeuxime ditionSecond edition1999-10Perturbations des communicationsradiotlphoniques mobilesen prsence de bruit impulsif Mthodes dapprciation de la dgradation etmesures pour amliorer le fonctionnementInterference to
2、 mobile radiocommunicationsin the presence of impulsive noise Methods of judging degradationand measures to improve performanceNumro de rfrenceReference numberCISPR 21:1999COMIT INTERNATIONAL SPCIAL DES PERTURBATIONS RADIOLECTRIQUESINTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCELICENSED TO MEC
3、ON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Rvision de la prsente publicationLe contenu technique des publications de la CEI et duCISPR est constamment revu par la Commission et parle CISPR afin quil reflte bien ltat actuel de la technique.Les re
4、nseignements relatifs des questions ltude etdes travaux en cours entrepris par le comit techniquequi a tabli cette publication,ainsi que la liste despublications tablies,se trouvent dans les documentsci-dessous:Site web de la CEI*Catalogue des publications de la CEIPubli annuellement et mis jourrgul
5、irement(Catalogue en ligne)*Bulletin de la CEIDisponible la fois au site web de la CEI*et comme priodique imprimTerminologie utilise dans la prsentepublicationSeuls sont dfinis ici les termes spciaux se rapportant la prsente publication.En ce qui concerne la terminologie gnrale,le lecteur sereporter
6、a la CEI 60050:Vocabulaire ElectrotechniqueInternational(VEI),qui est tablie sous forme de chapitresspars traitant chacun dun sujet dfini,lIndex gnraltant publi sparment.Des dtails complets sur le VEIpeuvent tre obtenus sur demande.Pour les termes concernant les perturbations radio-lectriques,voir l
7、e chapitre 902.Symboles graphiques et littrauxPour les symboles graphiques,les symboles littraux etles signes dusage gnral approuvs par la CEI,lelecteur consultera:la CEI 60027:Symboles littraux utiliser enlectrotechnique;la CEI 60617:Symboles graphiques pour schmas;Les symboles et signes contenus d
8、ans la prsentepublication ont t soit tirs de la CEI 60027 ouCEI 60617,soit spcifiquement approuvs aux fins decette publication.*Site web de la CEIRevision of this publicationThe technical content of IEC and CISPR publications iskept under constant review by the IEC and CISPR,thusensuring that the co
9、ntent reflects current technology.Information on the subjects under consideration andwork in progress undertaken by the technical com-mittee which has prepared this publication,as well asthe list of publications issued,is to be found at thefollowing IEC sources:IEC web site*Catalogue of IEC publicat
10、ionsPublished yearly with regular updates(On-line catalogue)*IEC BulletinAvailable both at the IEC web site*andas a printed periodicalTerminology used in this publicationOnly special terms required for the purpose of thispublication are defined herein.For general terminology,readers are referred toI
11、EC 60050:International Electrotechnical Vocabulary(IEV),which is issued in the form of separate chapterseach dealing with a specific field,the General Indexbeing published as a separate booklet.Full details of theIEV will be supplied on request.For terms on radio interference,see Chapter 902.Graphic
12、al and letter symbolsFor graphical symbols,and letter symbols and signsapproved by the IEC for general use,readers arereferred to:IEC 60027:Letter symbols to be used inelectrical technology;IEC 60617:Graphical symbols for diagrams;The symbols and signs contained in the presentpublication have either
13、 been taken from IEC 60027 orIEC 60617,or have been specifically approved for thepurpose of this publication.*IEC web siteLICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.COMMISSIONELECTROTECHNIQUEINTERNATIONALECISPR21INTERNATIONALELECT
14、ROTECHNICALCOMMISSIONDeuxime ditionSecond edition1999-10Perturbations des communicationsradiotlphoniques mobilesen prsence de bruit impulsif Mthodes dapprciation de la dgradation etmesures pour amliorer le fonctionnementInterference to mobile radiocommunicationsin the presence of impulsive noise Met
15、hods of judging degradationand measures to improve performance Commission Electrotechnique Internationale International Electrotechnical CommissionPour prix,voir catalogue en vigueurFor price,see current catalogue IEC 1999 Droits de reproduction rservs Copyright-all rights reservedAucune partie de c
16、ette publication ne peut tre reproduite niutilise sous quelque forme que ce soit et par aucun procd,lectronique ou mcanique,y compris la photo-copie et lesmicrofilms,sans laccord crit de lditeur.No part of this publication may be reproduced or utilized inany form or by any means,electronic or mechanical,including photocopying and microfilm,without permission inwriting from the publisher.International Electrotechnical Commission3,rue de Varemb Geneva,SwitzerlandTelefax:+41 22 919 0300e-mail:inmai