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IRE Transactions on Communications Systems

Issue 1 • Date March 1957

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Displaying Results 1 - 20 of 20
  • [Front cover and table of contents]

    Publication Year: 1957, Page(s): 0
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  • Aeronautical communications

    Publication Year: 1957, Page(s): 3
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  • USAF Aeronautical Communications: A Link in the Servo Control Loop

    Publication Year: 1957, Page(s):4 - 7
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (645 KB)

    This paper stresses the importance of understanding Air Force operational concepts as a basis for sound systems engineering of the communications-electronics support elements. It discusses some of these concepts with respect to operations of the Military Air Transport Service and the Strategic Air Command. It shows a need for an aeronautical communications servo control loop. View full abstract»

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  • A Method for Studying Air Force Air-Ground Data Transmission Requirements

    Publication Year: 1957, Page(s):8 - 10
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    This paper describes a research approach to the development of requirements for airborne communication systems. It is not proposed as an operational method to be used by the various commands. The procedure involves the pulling together in a rigorous and systematic way, the best judgments of people with considerable and diverse operational experience. The frailties of judgment are minimized by: 1) ... View full abstract»

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  • A New Look at Communications in the Field Army

    Publication Year: 1957, Page(s):11 - 14
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    This paper outlines the characteristics applicable to voice, written message and visual modes of communications together with a philosophy of attack in the problem. The paper places major emphasis on the determination of systems requirements from the viewpoint of the user's needs rather than the technique used. An example is given of a proposed radio net organization in the infantry division. View full abstract»

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  • The Four Systems Tests

    Publication Year: 1957, Page(s):15 - 22
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1091 KB)

    This paper highlights the efforts of the Army Signal Corps and particularly those of the Army Electronic Proving Ground (AEPG), Fort Huachuca, Arizona, in the fields of Air Navigation and Traffic Control, Battle Area Surveillance, Electronic Warfare, and Grid or Area Communications. These systems will provide the working tool to improve command control as the technology of warfare changes because ... View full abstract»

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  • The contributions of aeronautical communications to public safety systems

    Publication Year: 1957, Page(s):23 - 24
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    Freely Available from IEEE
  • The Atomichron: An atomic frequency standard

    Publication Year: 1957, Page(s):25 - 27
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (246 KB)

    The Atomichron is the first practical device to refer time to an atomic standard. The four most basic quantites involved in physical measurements are length, mass, charge and time and it is essential that a standard unit be defined for each of these entities - a standard unit which is unvarying and is readily accessible for comparison at any desired time. It is an accepted fact that the elementary... View full abstract»

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  • A one kilowatt high level modulated UHFamplifier with low distortion

    Publication Year: 1957, Page(s):28 - 34
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1074 KB)

    The Communications Laboratory of RADC has completed the development of a vital communications link in the short range ground-to-air communieations. This link is the 1 KW Amplifier - Modulator Group which operates in the military UHF 100-watt transmitters for line of sight (los), ground-to-air communications. The design, development and fabrication of the 1 KW UHF Amplifier - Modulator is discussed... View full abstract»

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  • UHF Communication System Interference Reduction Through the Use of Selective Filters

    Publication Year: 1957, Page(s):35 - 39
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (467 KB)

    Modern trends in uhf communication systems indicate an ever increasing use of greater numbers of channels, higher transmitter powers, and decreased antenna spacing. This all adds up to an ever increasing number of systems interference problems. In most instances, a system can be rendered "interference free" by adding sufficient selectivity between the receiver or transmitter and its antenna. This ... View full abstract»

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  • A 600 Kilowatt High Frequency Amplifier

    Publication Year: 1957, Page(s):40 - 52
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2586 KB)

    A description is given of the electrical circuits and mechanical construction of a power amplifier designed primarily for use in single sideband suppressed carrier operation having a peak envelope power output of 600,000 watts. The amplifier is also designed to handle an off-on keyed CW signal or frequency shift keyed signal at a continuous power output of 300,000 watts. Some of its features are c... View full abstract»

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  • Conservation of Communications Bandwidth for Traffic Control

    Publication Year: 1957, Page(s):53 - 59
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (538 KB)

    This paper analyzes the quantity of information present in a group of aircraft moving at known average velocities within a definite geographical sector. Computations of time required between determination of the position of each aircraft is computed on the basis of the residuals of an infinite time series representation of aircraft position. The positionl information quantities and the time interv... View full abstract»

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  • Results of UHF Mutual Enviroment Test Program at Rome Air Developement Center

    Publication Year: 1957, Page(s):60 - 81
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2174 KB)

    This report is a summary of UHF mutual interference tests performed at the Rome Air Development Center, Rome, New York. Initial tests were performed in the Laboratory and at the Verona Test Site of RADC by RADC engineers to obtain interference characteristics and operational parameters of the UHF communications equipment. The results of these tests, which are presented in Phase A, were submitted t... View full abstract»

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  • Air Force Communication Problem and Future Air Force Operational Communication System

    Publication Year: 1957, Page(s):82 - 86
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (502 KB)

    Air Force communications has expanded from the most elementary requirements in World War I to an enormous military world-wide industry. It exceeds the requirements and capabilities of commercial systems without standardization, engineering, installation and maintenance capabilities required for the Job. A new system concept is proposed to reduce types of equipments, increase efficiency and reduce ... View full abstract»

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  • An intergrated high frequency single sideband system

    Publication Year: 1957, Page(s):87 - 95
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (553 KB)

    It was the objective of the program described to develop and produce designs for a complete line of equipment suitable for application in the high frequency (2.0 - 30 mc) radio spectrum and utilizing single sideband (SSB) suppressed carrier emission. The units developed as a result of this program form the basic building blocks of an integrated communications system including a stable frequency ge... View full abstract»

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  • Some factors affecting intelligibility in single sideband communications

    Publication Year: 1957, Page(s):96 - 98
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (214 KB)

    Of all the factors that make up the design of a single sideband (SSB) speech transmission system, the one on which information is most difficult to obtain is that of intelligibility as affected by errors of carrier frequency. The problem is more difficult because of the subjective nature of the judgements that influence users to accept or condemn a given compromise. Of all the military and enginee... View full abstract»

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  • Synchronous Communications

    Publication Year: 1957, Page(s):99 - 105
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (824 KB)

    It can be shown that present usage of amplitude modulation does not permit the inherent capabilities of the modulation process to be realized. In order to achieve the ultimate performance of which AM is capable synchronous or coherent detection techniques must be used at the receiver and carrier suppression must be employed at the transmitter. When a performance comparison is made between a synchr... View full abstract»

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  • The Possibity of Extending Air-Ground UHF Voice Communications to Distances Far Beyond the Radio Horizon

    Publication Year: 1957, Page(s):106 - 121
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1414 KB)

    Certain of the results of a detailed research investigation of 220 Mcps tropospheric "scatter" field strengths at long distances and high altitudes carried out here at the Air Force Cambridge Research Center are reviewed in some detail. On the basis of the airborne data obtained to date, supplemented by fading statistics obtained here and elsewhere, reasonable initial estimates can be made of the ... View full abstract»

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  • Some Considerations Concerning Nuclear Radiations for Application to Aeronautical Navigational Aids

    Publication Year: 1957, Page(s):122 - 126
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (407 KB)

    A brief introduction to nuclear radiation physics and particularly gamma radiation is followed by a discussion of methods of measuring emitter to detector distance. Consideration is given to statistical accuracy of range measurements as well as to an example of a possible aircraft landing system. View full abstract»

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  • [Back cover]

    Publication Year: 1957, Page(s): 0
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    Freely Available from IEEE

Aims & Scope

This Transactions ceased publication in 1962. The current retitled publication is  IEEE Transactions on Communications.

Full Aims & Scope