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28th IEEE Vehicular Technology Conference最新文献

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What about the customers?, a survey of mobile vehicle telephone users 顾客呢?，一项针对移动车辆电话用户的调查
28th IEEE Vehicular Technology Conference Pub Date : 1978-03-22 DOI: 10.1109/VTC.1978.1622532
V. Smith
{"title":"What about the customers?, a survey of mobile vehicle telephone users","authors":"V. Smith","doi":"10.1109/VTC.1978.1622532","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622532","url":null,"abstract":"To determine the characteristics of mobile telephone users, a mailed questionnaire survey of Bell System mobile telephone customers was conducted. The questionnaire was divided into several topical areas: general (demographics), mobile telephone equipment, placing and receiving calls, and operating procedures. Specifically, the objectives of the survey were to identify customer demographics and usage patterns; to explore human factors issues such as safety, instructions and operating procedures; and to identify user problems. A total of 500 questionnaires were returned from the 5 cities studied (Boston, Denver, Milwaukee, Nashville, and Odessa, Texas). Results of the survey, and its implications, will be discussed.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133429865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
The highway advisory radio service 高速公路广播咨询服务
28th IEEE Vehicular Technology Conference Pub Date : 1978-03-22 DOI: 10.1109/VTC.1978.1622586
W. S. Halstead
{"title":"The highway advisory radio service","authors":"W. S. Halstead","doi":"10.1109/VTC.1978.1622586","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622586","url":null,"abstract":"Background information relating to the recent establishment by the Federal Communications Commission (FCC) of Travelers Information Stations to assist drivers of motor vehicles by use of standard AM broadcast receivers is reviewed. Field strength and other data as derived from a experimental inductlon-radio system, utilizing a roadside cable of radiating type as employed successfully for driver-information service at the Los Angeles International Airport are presented. The results of surveys that indicate a high degree of public acceptance of the advisory-radio service at the airport are set forth. The technical requirements as specified by the FCC for the new service are discussed. Problems involved in the utilization of roadside cables of induction-radio type or small antenna structures with associated low-power radio transmitters as a means of limiting effective signaling distance are examined.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122495201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
First year operation of MARISAT MARISAT第一年运行
28th IEEE Vehicular Technology Conference Pub Date : 1978-03-22 DOI: 10.1109/VTC.1978.1622566
D. Lipke, E. Slack
{"title":"First year operation of MARISAT","authors":"D. Lipke, E. Slack","doi":"10.1109/VTC.1978.1622566","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622566","url":null,"abstract":"","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131649662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Adaptive signal processing in the coastal harbor radio-telephone system 沿海港口无线电话系统中的自适应信号处理
28th IEEE Vehicular Technology Conference Pub Date : 1978-03-22 DOI: 10.1109/VTC.1978.1622533
C.W. Schaible
{"title":"Adaptive signal processing in the coastal harbor radio-telephone system","authors":"C.W. Schaible","doi":"10.1109/VTC.1978.1622533","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622533","url":null,"abstract":"This paper describes a method by which land-based receivers in the Coastal Harbor radiotelephone system can reliably detect and process A3A signals in the two-to-three megahertz frequency range. It has been shown [1] that the noise and signal characteristics in the system are nonstationary. The land receivers must reliably detect an A3A carrier in a noise environment that varies from a low of 40 dB above thermal for quiet locations, like Boston at midday in winter, to a high of 90 dB above thermal like New Orleans at midnight in summer. An FM noise quieting approach is employed for detection of the A3A carrier. The approach is adaptive in that the receiver will only be activated if sufficient carrier is present to overcome the noise at the time of detection.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130636713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Review of measurements used in operational maintenance 检查运行维护中使用的测量方法
28th IEEE Vehicular Technology Conference Pub Date : 1978-03-22 DOI: 10.1109/VTC.1978.1622601
A. Yen
{"title":"Review of measurements used in operational maintenance","authors":"A. Yen","doi":"10.1109/VTC.1978.1622601","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622601","url":null,"abstract":"This paper discusses the general approach to maintenance practices by several operating AGT sites. A general framework is suggested for the review of these maintenance programs. A discussion is also made to the reasons for different program emphases. In the conclusion of the paper, suggestions are offered for maintenance programs at new sites.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116839230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimum EMS channel utilization in metropolitan areas using voting receivers and dynamic frequency assignments 使用投票接收器和动态频率分配的大都市地区EMS信道的最佳利用率
28th IEEE Vehicular Technology Conference Pub Date : 1978-03-22 DOI: 10.1109/VTC.1978.1622584
R. H. Moore
{"title":"Optimum EMS channel utilization in metropolitan areas using voting receivers and dynamic frequency assignments","authors":"R. H. Moore","doi":"10.1109/VTC.1978.1622584","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622584","url":null,"abstract":"","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126218338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Frequency synthesis in V.H.F. mobile radio 甚高频移动无线电中的频率合成
28th IEEE Vehicular Technology Conference Pub Date : 1978-03-22 DOI: 10.1109/VTC.1978.1622587
J. M. Bryant
{"title":"Frequency synthesis in V.H.F. mobile radio","authors":"J. M. Bryant","doi":"10.1109/VTC.1978.1622587","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622587","url":null,"abstract":"The use of P.L.L. frequency synthesis in transceivers for Land Mobile use is growing rapidly. This paper considers some of the problems of the design of such synthesisers and some solutions to them. The topics covered are the use of surface acoustic wave devices in stable V.C.O.s, the design of type II phase/ frequency comparators, and the design of programmable dividers for operation at V.H.F. and U.H.F. Frequencies.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"9 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113969150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Radio propagation in urban areas 市区的无线电传播
28th IEEE Vehicular Technology Conference Pub Date : 1978-03-22 DOI: 10.1109/VTC.1978.1622591
A. G. Longley
{"title":"Radio propagation in urban areas","authors":"A. G. Longley","doi":"10.1109/VTC.1978.1622591","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622591","url":null,"abstract":"This paper reviews earlier work on radio propagation in urban areas, including data, studies of multi-path fading, and empirical propagation models. A model is described, for use with a digital computer, which provides a rapid means of calculating both the median attenuation and the location, or path-to-path, variaability.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121893665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 48
Atlanta airport people mover — The fifth generation system by Westinghouse 亚特兰大机场旅客通道—西屋公司的第五代系统
28th IEEE Vehicular Technology Conference Pub Date : 1978-03-22 DOI: 10.1109/VTC.1978.1622577
T. C. Selis
{"title":"Atlanta airport people mover — The fifth generation system by Westinghouse","authors":"T. C. Selis","doi":"10.1109/VTC.1978.1622577","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622577","url":null,"abstract":"The Atlanta Hartsfield International Airport is the second busiest airport in the world second only to Chicago's O'Hare. This year a projected 15 million passengers will flow through the Atlanta Terminal. This figure is expected to double by the year 1990. For the past ten years planners have been attempting to come up with a functional design that would handle the projected passenger flow through the year 2000. The design finally selected employs the use of a People Mover System whlch will carry passengers between the terminal and four concourses. The People Mover System is the fifth generation system built by Westinghouse. Westinghouse has deployed People Mover Systems in Tampa, Seattle, and Busch Gardens in Williamsburg, Virginia. Another system will go into operation at Miami International Airport late in 1978. The Atlanta Airport People Mover System will begin operation in mid-1980. The People Mover System will utilize new technological advancements recently developed for the Westinghouse system. These are the use of a new switch design, a new power rail system and use of microprocessors to control the operation of the Vehicle system. The system will provide a service availability of greater than 99%. The People Mover System will provide continuous passenger service and will consist of six trains of up to four cars each. The trains will circulate over 12,000 feet of guideway in a tunnel designed for that purpose. Thirteen transit switches will be used to facilitate a reverse turnback movement and provide for redundant operational modes in cases of failures. The system will operate on headways of less than 100 seconds. The paper will describe the Atlanta People Mover System with emphasis on the new technological advances made by Westinghouse.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121211161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Huntington beach automatic vehicle monitoring system utilizing overlapping RF signposts 亨廷顿海滩自动车辆监控系统利用重叠射频路标
28th IEEE Vehicular Technology Conference Pub Date : 1978-03-22 DOI: 10.1109/VTC.1978.1622598
G. Gruver, O. A. Reichardt
{"title":"The Huntington beach automatic vehicle monitoring system utilizing overlapping RF signposts","authors":"G. Gruver, O. A. Reichardt","doi":"10.1109/VTC.1978.1622598","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622598","url":null,"abstract":"An Automatic Vehicle Location (AVL) System has been in operation for over a year in Huntington Beach, California. This system is part of an integrated Computer Aided Dispatcher/AVL system in use by the Huntington Beach Police Department. The AVL system incorporates 483 RF signposts, services 56 police vehicles, and provides color graphic displays for two police dispatchers while sharing an existing UHF voice channel. The AVL system, its CAD interfaces, and the first years' operation are described.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122363432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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