By Topic

Radio and Electronic Engineer

Issue 1.2 • Date January-February 1977

Filter Results

Displaying Results 1 - 10 of 10
  • The presidential address

    Publication Year: 1977, Page(s):3 - 9
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1420 KB)

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Circular polarization in radars: an assessment of rain clutter reduction and likely loss of target performance

    Publication Year: 1977, Page(s):11 - 29
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2317 KB)

    Fixed circular polarization has been used for rain clutter reduction for over thirty years,1¿3 but a proper understanding of the inter-relationship of radar propagation path and target parameters is still not widely known. The paper sets out to provide a basic analysis, together with a set of `universal curves¿ from which expected rain clutter reduction and target loss may be obtained for any pa... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Introduction of a sharp steerable null response in an otherwise omni-directional pattern using a circular array

    Publication Year: 1977, Page(s):30 - 32
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (328 KB)

    A method of generating a single sharp null response in an otherwise omni-directional pattern using a circular array is discussed. The null width is reduced by the introduction of an abrupt phase reversal in the pattern function in the direction of the null. The null is also electronically steerable in the azimuth and in the elevation plane. Mutual coupling effect on the depth of the null is minimi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Picture recognition and analysis

    Publication Year: 1977, Page(s):33 - 48
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2792 KB)

    Picture recognition and analysis has numerous applications in all fields of technology, from medical diagnosis to document processing. This paper introduces some of the basic techniques of picture analysis: correlation, or matching of pictures; transformations and their uses, including their application to normalization for recognition purposes; parametrization, or property measurement, for pictur... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The physical basis of signal theory

    Publication Year: 1977, Page(s):49 - 58
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1351 KB)

    This paper reviews the basic physical principles behind: the processing and combination of noisy signals; the quantification of information and of channel capacity; transformations and dualities in the representation of signals in frequency, time and space. The treatment is largely non-mathematical, and is aimed at fostering an insight into the nature of these concepts and their interrelations. In... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Round-off error analysis in digital m.t.i. processors for radar

    Publication Year: 1977, Page(s):59 - 65
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (750 KB)

    Digital signal processing offers considerable advantages over analogue processing for video target extraction in moving target indication (m.t.i.) radars. These advantages include simplicity in the realization of delays, overall stability of the processor and the possibility of multiplexing. However, because of the finite resolution of the arithmetic unit, digital processing introduces a noise com... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Letters: Reliability in avionic systems

    Publication Year: 1977
    IEEE is not the copyright holder of this material | PDF file iconPDF (159 KB)
    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design characterization of a phase-locked v.h.f. land mobile receiver

    Publication Year: 1977, Page(s):67 - 73
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (730 KB)

    A `long loop¿ v.h.f. phase-locked a.m. receiver with synchronous detector is described. The effect of the narrow-band Chebyshev i.f. filter on receiver lock-in range, hold-in range and capture time is investigated as a function of carrier level, ¿60 to ¿120 dBV, for a range of low-pass filter time-constants. The transient response of the Chebyshev filter and instantaneous limiting in the i.f. s... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Life expectancy of members

    Publication Year: 1977
    IEEE is not the copyright holder of this material | PDF file iconPDF (189 KB)
    Full text access may be available. Click article title to sign in or learn about subscription options.
  • New academic qualifications in Australia

    Publication Year: 1977
    IEEE is not the copyright holder of this material | PDF file iconPDF (189 KB)
    Full text access may be available. Click article title to sign in or learn about subscription options.