Random pulse-to-pulse phase diversity provides the means to suppress range-ambiguous interference in medium-to-high pulse repetition frequency radar applications. However, Doppler filters used in random phase diversity processing tend to suffer from high average sidelobe levels. This paper shows how this problem can be addressed using Coherent CLEAN, a deconvolution algorithm originally developed to address the problem of sidelobe interference in sparse antenna arrays. In the context of random phase diversity, Coherent CLEAN can remove sidelobe leakage from the output of a random phase diversity Doppler filter bank or be applied more directly to disentangle returns from multiple range ambiguities. The algorithm is proposed as an effective and computationally efficient feasible alternative to iterative filter refinement or “worst-case” filter shaping for suppression of unexpected returns. Multiple modes of applying Coherent CLEAN are described and a new variation of the algorithm, simultaneous Coherent CLEAN, is introduced.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Sidelobe Leakage Reduction in Random Phase Diversity Radar Using Coherent CLEAN


    Contributors:


    Publication date :

    2019-10-01


    Size :

    1718321 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    MIMO radar range-angular-doppler sidelobe suppression using random space-time coding

    Shenghua Zhou / Hongwei Liu / Xu Wang et al. | IEEE | 2014


    Sidelobe Interference Reduction

    Urkowitz | Online Contents | 1997



    Sidelobe Mitigation in Noise Radar Using Sparse Signal Processing

    De Martin, Lilian / Van Rossum, Wim / Ribeiro, Diogo et al. | IEEE | 2020


    Radar System Calibration with Bistatic Sidelobe Compensation

    TALAI ARMIN / BURZA RAFAL MICHAL / KALLI SASHI PRAVEEN | European Patent Office | 2023

    Free access