In this paper, a new nonlinear frequency modulation (NLFM) waveform is developed that can be used as a transmitted chirp in synthetic aperture radar (SAR) imaging to improve the imaging quality compared to a linear frequency modulation (LFM) chirp signal. The new NLFM is constructed based on piecewise linear functions, which are optimized using multi-objective optimization. Different signal processing algorithms are investigated in order to use NLFM as the transmitted chirp in a SAR system. In addition, a modified motion compensation (MC) algorithm using navigation data is proposed for the range-Doppler algorithm. Strip-map SAR geometry is considered to generate a SAR raw signal, in order to validate the new offered chirp signal and the proposed MC algorithm.


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    Title :

    Synthetic aperture radar imaging using nonlinear frequency modulation signal


    Contributors:
    Saeedi, Jamal (author) / Faez, Karim (author)


    Publication date :

    2016-02-01


    Size :

    2123734 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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