Measurements indicate doppler signal return from aircraft includes airframe line that may be as narrow as few hertz or as wide as 100 Hz, depending on aircraft size, speed, and aspect angle; spectrum also contains lines (caused by rotating machinery) that may at times be larger than airframe line and appear to contain significant fraction of total received energy; these lines may cause false detections to be made by modern range-gated filter band pulse-doppler radars in which detection occurs when spectral component exceeds preset threshold in one filter of contiguous filter bank.


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    Titel :

    Doppler spectra of S-band and X-band signals


    Weitere Titelangaben:

    Report NRL Progress


    Beteiligte:
    Hynes, R. (Autor:in) / Gardner, R.E. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1968


    Format / Umfang :

    10 pages


    Medientyp :

    Report


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Doppler spectra of aircraft radar targets at S-band

    Gardner, R.E. | Engineering Index Backfile | 1962





    Spectrum Convolution Theorem and Spectra Composition in Doppler Ultrasound Signals

    Qian, M. / Wan, M. / Li, J. | British Library Online Contents | 1998