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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>THE USE OF RADAR AT SEA. FIFTH REVISED EDITION</title>
      <link>https://trid.trb.org/View/76116</link>
      <description><![CDATA[This edition takes into account the latest thinking in the field of collision-avoidance since the introduction of the new Collision Regulations.  Chapters cover the general principles and characteristics of radar, the functions of the various units, the behaviour of radio waves; the interpretation of the radar display; the latest devices to insure radar response; and new developments in shore-based radar.  An Annex discusses the most up-to-date fully automatic computer-based systems for anti-collision radar plotting.]]></description>
      <pubDate>Tue, 31 Oct 1978 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/76116</guid>
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      <title>MARINE RADAR-THE CLUTTER PROBLEM</title>
      <link>https://trid.trb.org/View/70961</link>
      <description><![CDATA[Clutter has remained as the major marine radar problem in the detection of small surface targets under adverse weather conditions.  With the increasing demands for anti collision, automatic plotting and alarm systems, it is suggested that the problem will assume an even greater significance and may prove to be a serious limiting factor in the extension, development and operational use of such systems. Substantial improvement in detection techniques will be vital if safe and consistent operation is to be achieved and assured.  The paper reviews the various techniques currently available to effect improvements in the clutter performance of marine radar and assesses the limitations of each.]]></description>
      <pubDate>Sat, 29 Jul 1978 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/70961</guid>
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      <title>IMPROVING U.S. SHIPPING PRODUCTIVITY. TECHNOLOGY: NAVIGATION AND COMMUNICATION</title>
      <link>https://trid.trb.org/View/41995</link>
      <description><![CDATA[The study investigates the innovations in communication and navigation that ship owners will be required to adopt for more effective means of operation to successfully compete in the shipping business.  The report analyzes the use of satellites in providing accurate communication and global navigation, anti-collision radar data computer systems, and the general purpose shipboard computer as an aid in the operation of the new faster and larger ships.  The study explores the possibilities to increase ship productivity and provides conclusions and recommendations for further consideration.]]></description>
      <pubDate>Wed, 09 Jun 1976 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/41995</guid>
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      <title>SOME LIMITATIONS OF MARINE ELECTRONIC NAVIGATION SYSTEMS</title>
      <link>https://trid.trb.org/View/36476</link>
      <description><![CDATA[What is a dire necessity to one shipowner is a matter of complete indifference to another.  Although it is obviously a continuing process the author has tried over 18 months to determine where are the significant areas in which present electronic aids do not yet appear to meet user requirements. He has asked - is the shortcoming due to a lack of specific equipment or to a technical limitation in present equipment?  Why has the limitation not been previously removed?  Is it due to system complexity, probably combined with unacceptable cost or some factors more fundamental? This paper attempts to identify some of the limitations and to discuss briefly some fo the options that could be available for their reduction and possible elimination.]]></description>
      <pubDate>Wed, 10 Mar 1976 00:00:00 GMT</pubDate>
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      <title>FEEDING RADAR WITH CORRECT DATA</title>
      <link>https://trid.trb.org/View/36477</link>
      <description><![CDATA[Modern, sophisticated radar relies on data from extraneous sources.  This article investigates those sources (emphasis is on speed input) and how the data is applied to radar in its navigation and anti-collision roles.]]></description>
      <pubDate>Wed, 10 Mar 1976 00:00:00 GMT</pubDate>
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      <title>AUTOMATION IN MARINE RADAR. COLLISION WARNING AND COURSE TRACKING AT SEA</title>
      <link>https://trid.trb.org/View/2704</link>
      <description><![CDATA[The need for automatic collision warning at sea and for more rapid and accurate navigational information has led to the development of an auto-tracking marine navigational radar. In it the display provides initial all-round early warning of any approaching vessel (or coastline) followed by auto-tracking and collision-risk assessment of any vessels on potentially dangerous courses.  All the navigational information is presented as a composite picture superimposed on the live radar information on a two-color display system. An additional facility is incorporated by which the effects of a change of one's own ships' course and/or speed can be rapidly and comprehensively assessed and optimized before any actual maneuver is initiated.]]></description>
      <pubDate>Sun, 19 Nov 1972 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/2704</guid>
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    <item>
      <title>DECCA INTRODUCES SOLID-STATE 10CM RADAR</title>
      <link>https://trid.trb.org/View/1075</link>
      <description><![CDATA[The equipment incorporates a new, compact solid-state 30 kw transceiver of modular design; a new 12 ft aerial designed to operate in wind speeds up to 100 knots and a choice of five proven Decca Transar displays.  The latter are the 16 in.  True or Relative Motion, both with interscan; 12 in. True or Relative Motion; 12 in. Anti-Collision.  Ships equipped with a dual installation of 10 cm and 3 cm radars which are interswitchable will therefore benefit by the operational advantages of identical displays.  The transceiver is housed in a bulkhead-mounted case measuring only 19x22x11 1/2 in.  The power unit is integral and the transceiver has a power consumption of only 150 w.  Greatly increased reliability, efficiency and stability have been achieved by the use of a solid-state modulator and local oscillator, extensive use of microcircuits and tuning by manual acquisition and automatic follow to ensure optimum tuning at all times.]]></description>
      <pubDate>Mon, 30 Oct 1972 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/1075</guid>
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      <title>AUTOMATIC PLOTTING AND ANTI-COLLISION WARNING SYSTEM</title>
      <link>https://trid.trb.org/View/2796</link>
      <description><![CDATA[Operational and technical features of the TM/CPA radar system are described.  The equipment has a built-in digital computer and an electronic bearing marker (EBM)  controlled by the computer and manually.  It provides an easy and accurate means for determining the relative and true speed of course, CPA (Closest point of approach) and time of CPA to any number of targets both in relative and true motion presentation.]]></description>
      <pubDate>Fri, 21 Jan 1972 00:00:00 GMT</pubDate>
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