The imbalance of a binary code with elements either +1 or -1 is the number of -1 elements subtracted from the number of +1 elements. A balanced code is one with 0 imbalance. Balanced codes are often used for pulse compression because the DC response of a linear pulse compression module is proportional to the imbalance. A nonzero DC bias combined with an unbalanced code produces a nonzero output. In a radar signal processor, this can mean susceptibility to false alarms from signals that alias to DC at pulse compressor input. This paper examines a common radar signal processor subchain for which some imbalance in pulse compression codes can reduce bias sensitivity. The chain consists of R/theta limiter, pulse compressor and I/sup 2/+Q/sup 2/ modules. It is shown that for an input consisting of DC bias and additive Gaussian noise, there is a nonzero value for the code imbalance for which the mean and variance of the output are insensitive to the magnitude and phase of the input bias.


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    Titel :

    Where binary code imbalance decreases DC bias sensitivity


    Beteiligte:
    Coxson, G.E. (Autor:in)


    Erscheinungsdatum :

    2000-01-01


    Format / Umfang :

    322893 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Where Binary Code Imbalance Decreases DC Bias Sensitivity

    Coxson, G. / IEEE | British Library Conference Proceedings | 2000





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