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Proceedings of the IEEE

Issue 11 • Date Nov. 1981

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Displaying Results 1 - 15 of 15
  • [Front cover and table of contents]

    Publication Year: 1981, Page(s): c1
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    Freely Available from IEEE
  • Scanning the issue

    Publication Year: 1981, Page(s): 1379
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  • Spectrum analysis—A modern perspective

    Publication Year: 1981, Page(s):1380 - 1419
    Cited by:  Papers (875)  |  Patents (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3965 KB)

    A summary of many of the new techniques developed in the last two decades for spectrum analysis of discrete time series is presented in this tutorial. An examination of the underlying time series model assumed by each technique serves as the common basis for understanding the differences among the various spectrum analysis approaches. Techniques discussed include the classical periodogram, classic... View full abstract»

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  • A comprehensive survey of digital transmultiplexing methods

    Publication Year: 1981, Page(s):1419 - 1450
    Cited by:  Papers (48)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2190 KB)

    With this survey, an attempt is made to describe the great majority of all known methods of digital transmultiplexing (i.e., conversion) of time-division-multiplex (TDM) to frequency-division-multiplex (FDM) signals, and vice versa. To this end, the individual transmultiplexer approaches are classified into four categories according to the underlying algorithm: Bandpass filter bank, low-pass filte... View full abstract»

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  • Digital signal processing for sonar

    Publication Year: 1981, Page(s):1451 - 1506
    Cited by:  Papers (228)  |  Patents (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5911 KB)

    This paper is a tutorial which describes "main stream" sonar digital signal processing functions along with the associated implementation considerations. The attempt is to promote further cross-fertilization of ideas among digital signal processing applications in sonar, radar, speech, communications, seismology, and other related fields. View full abstract»

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  • Easy generation of Dolph-Chebyshev excitation coefficients

    Publication Year: 1981, Page(s):1508 - 1509
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (158 KB)

    New algorithms (I)-(VI) which "generate faster and solve at a lower cost" Dolph-Chebyshev array system equations [1] in the matrical forms AI = P for an array of odd antennas and BI0= Q, for even elements array with the respective excitation coefficients I = A-1P and I0= B-1Q are proposed. View full abstract»

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  • Subharmonic Bragg effects in almost periodic media

    Publication Year: 1981, Page(s):1510 - 1511
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB)

    Subharmonic Bragg effects are exhibited by structures with an almost periodic permittivity. This resonance is manifested by appreciable reflection and is chracterized by coupled mode equations with appropriately derived coefficients. View full abstract»

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  • Space charge waves on an unfocused cylindrical electron beam

    Publication Year: 1981, Page(s):1511 - 1512
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (220 KB)

    The effect of including the magnetic force in the dynamics of a cylindrical electron beam without the focusing magnetostatic field is discussed. View full abstract»

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  • An extension and application of the Thompson-Lampard theorem

    Publication Year: 1981, Page(s):1512 - 1514
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (329 KB)

    An extension of the well-known Thompson-Lampard theorem and its application for the measurement of resistivity of conducting materials is presented in this paper. Experimental results with an aluminium sheet are also included. View full abstract»

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  • A low-distortion bipolar feedback current amplifier technique

    Publication Year: 1981, Page(s):1514 - 1515
    Cited by:  Papers (3)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (253 KB)

    A bipolar current amplifier using modified Wilson current mirrors in a feedback configuration to avoid the effects of voltage modulation is presented. An output of 20-mA ppk has been obtained with only 1-percent harmonic distortion irrespective of load and with proportionally lower distortion at reduced output current. View full abstract»

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  • A two-dimensional technique for frequency-wavenumber estimation

    Publication Year: 1981, Page(s):1515 - 1517
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (402 KB)

    Simultaneous frequency and wavenumber estimation using two-dimensional (2-D) linear prediction on a space-time data array is investigated. The method used is a direct extension of our previously presented one-dimensional (1-D) frequency estimation technique. It is relatively simple computationally and is superior to the 2-D Fourier transform method in resolving signals closely spaced in frequency ... View full abstract»

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  • On the sensitivity and the resolution of microwave imaging using ART

    Publication Year: 1981, Page(s):1517 - 1519
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (523 KB)

    The feasibility of using the presently available linear reconstruction techniques in microwave (MW) imaging was suggested and numerically demonstrated in a recent communication [1]. It was shown that although such techniques neglect reflection and refraction effects, they still can be used to obtain suitable MW images. This letter presents some calculated microwave images of phantoms simulating bi... View full abstract»

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  • Linear systems

    Publication Year: 1981, Page(s):1519 - 1520
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  • Book alert

    Publication Year: 1981, Page(s): 1520
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  • [Back cover]

    Publication Year: 1981, Page(s): c4
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H. Joel Trussell
North Carolina State University