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IEEE Aerospace and Electronic Systems Magazine

Issue 5 • Date May 1991

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Displaying Results 1 - 6 of 6
  • Radar target classification and interpretation by means of structural descriptions of backscatter signals

    Publication Year: 1991, Page(s):3 - 7
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (522 KB)

    An approach to radar target classification that exploits the relationship between the physical structure of the observed target and the down-range (polarimetric) cross section of the measured backscatter response is presented. The term 'structure' refers to parameters such as the relative range between down-range scattering centers, their relative size, and, when polarization-diverse measurements ... View full abstract»

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  • High-resolution multiple target angle tracking

    Publication Year: 1991, Page(s):8 - 12
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (429 KB)

    An approach to high-resolution multiple-target-angle tracking that uses the output of an array of sensors is presented. The results of direction-of-arrival estimation by eigenstructure analysis are extended to derive a recursive procedure for tracking moving sources. This procedure involves recursive eigenvalue decomposition and a zero-tracking algorithm, using the coefficient derived from the min... View full abstract»

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  • A space-fed phased array for surveillance from space

    Publication Year: 1991, Page(s):13 - 17
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (513 KB)

    A space-fed radar antenna called a venetian blind is proposed for all-weather wide-area surveillance from space. Radar requirements for tasked and untasked operation are discussed, and the process of selecting the venetian blind concept, which can support both, is described. In its untasked form (essentially a space-fed passive lens), it achieves off-axis squint angles of many beamwidths with negl... View full abstract»

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  • A flexible processor for a digital adaptive array radar

    Publication Year: 1991, Page(s):18 - 22
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (489 KB)

    A digital beamforming processor for an adaptive array radar is described. The functionality and the architecture of the processor are strongly driven by a goal of achieving adaptive null depths in the 60-dB to 70-dB range, which necessitates substantial preprocessing of each channel. In particular, conversion to baseband quadrature channels is accomplished digitally using a single A/D converter pe... View full abstract»

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  • Missing radar pulse clutter processing

    Publication Year: 1991, Page(s):23 - 27
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (403 KB)

    The degradation of conventional clutter processing filters due to missing pulses resulting from RF interference blanking, ambiguous range returns when no filter pulses are used, or eclipsing is described. The effects of a missing pulse on uncompensated and optimum clutter filters are investigated. The maximum improvement factor method and other methods are compared to the optimum filtering. New me... View full abstract»

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  • Pulse Doppler signature of a rotary-wing aircraft

    Publication Year: 1991, Page(s):28 - 30
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (290 KB)

    Field measurements of a modified Sikorsky S-55 helicopter target were carried out to investigate rotary-wing aircraft Doppler radar signature phenomenology. The results of the data analysis with regard to classification and identification of the aircraft based on its signature are presented. It was found that using the Doppler radar return and appropriate feature extraction techniques, the helicop... View full abstract»

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Aims & Scope

IEEE Aerospace and Electronic Systems Magazine is a monthly magazine that publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments as well as news and information of interest to IEEE Aerospace and Electronic Systems Society members.

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Maria Sabrina Greco
Dept. of Information Engineering
University of Pisa
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