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      <marc:subfield code="a">International Mobile Satellite Conference </marc:subfield>
      <marc:subfield code="n">(3rd : </marc:subfield>
      <marc:subfield code="d">1993 : </marc:subfield>
      <marc:subfield code="c">Pasadena, California)</marc:subfield>
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      <marc:subfield code="a">Proceedings of the third International Mobile Satellite Conference IMSC '93 : </marc:subfield>
      <marc:subfield code="b">June 16-18, 1993, Pasadena, California / </marc:subfield>
      <marc:subfield code="c">Co-sponsored by the National Aeronautics and Space Administration / Jet Propulsion Laboratory and the Department of Communications, Canada / Communications Research Centre ; compiled by: Robert Kwan, Jack Rigley ; edited by: Randy Cassingham.</marc:subfield>
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      <marc:subfield code="a">[Ottawa] : </marc:subfield>
      <marc:subfield code="b">Communications Research Centre, </marc:subfield>
      <marc:subfield code="c">1993.</marc:subfield>
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      <marc:subfield code="a">1 online resource (ix, 600 pages) : </marc:subfield>
      <marc:subfield code="b">illustrations, maps, graphs + </marc:subfield>
      <marc:subfield code="e">1 addendum (ii, 48 pages)</marc:subfield>
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      <marc:subfield code="a">Digitized edition from print [produced by Innovation, Science and Economic Development Canada].</marc:subfield>
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    <marc:datafield tag="504" ind1=" " ind2=" ">
      <marc:subfield code="a">Includes bibliographical references and index.</marc:subfield>
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      <marc:subfield code="a">"Satellite-based mobile communications systems provide voice and data communications to users over a vast geographic area. The users may communicate via mobile or hand-held terminals, which may also provide access to terrestrial cellular communications services. While the first and second International Mobile Satellite Conferences (Pasadena, 1988 and Ottawa, 1990) mostly concentrated on technical advances, this Third IMSC also focuses on the increasing worldwide commercial activities in Mobile Satellite Services. Because of the large service areas provided by such systems - up to and including global coverage - it is important to consider political and regulatory issues in addition to technical and user requirements issues. The approximately 100 papers included here cover sessions in 11 areas: the direct broadcast of audio programming from satellites; spacecraft technology; regulatory and policy considerations; hybrid networks for personal and mobile applications; advanced system concepts and analysis; user requirements and applications; current and planned systems; propagation; mobile terminal technology; modulation, coding and multiple access; and mobile antenna technology. Representatives from about 20 countries are expected to attend IMSC '93"--Abstract, page v.</marc:subfield>
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      <marc:subfield code="a">Artificial satellites in telecommunication</marc:subfield>
      <marc:subfield code="v">Congresses.</marc:subfield>
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      <marc:subfield code="a">Mobile communication systems</marc:subfield>
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      <marc:subfield code="a">Satellites artificiels dans les télécommunications</marc:subfield>
      <marc:subfield code="v">Congrès.</marc:subfield>
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      <marc:subfield code="a">Radiocommunications mobiles</marc:subfield>
      <marc:subfield code="v">Congrès.</marc:subfield>
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      <marc:subfield code="a">Communications Research Centre (Canada), </marc:subfield>
      <marc:subfield code="e">sponsoring body.</marc:subfield>
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      <marc:subfield code="a">Jet Propulsion Laboratory (U.S.), </marc:subfield>
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      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2022/crc/C2-264-1993-1-eng.pdf</marc:subfield>
      <marc:subfield code="z">Addendum</marc:subfield>
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      <marc:subfield code="a">JPL Publication 93-009</marc:subfield>
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