Achieving high angular resolution estimation is essential for enhancing environmental perception and accurately detecting extended targets. However, implementing a large aperture radar system as a single sensor faces significant technical and economic challenges. Radar networks, comprising multiple individual radar sensors, offer a promising solution to these obstacles. In this article, we propose a method for high resolution direction-of-arrival (DOA) estimation tailored for coherent distributed millimeter-wave radar systems. Our approach leverages multiple-input multiple-output technology and distributed arrays to construct a virtual sparse array capable of synthesizing a full uniform array covariance matrix through specific correlation transformation. Furthermore, we introduce a joint optimization method for directly angle finding that efficiently addresses large-scale optimization problems by exploiting both sparsity and low-rank properties, thereby circumventing the traditional sequential steps of matrix reconstruction and DOA estimation. We employ the alternating direction method of multipliers to ensure reliable convergence. Our proposed model and method have been extensively validated through comprehensive simulations, highlighting their advantages within the realm of distributed radar systems.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    High Resolution DOA Estimation of Coherent Distributed Millimeter-Wave Radar


    Beteiligte:
    Li, Yi (Autor:in) / Xia, Weijie (Autor:in) / Zhu, Lingzhi (Autor:in) / Qu, Cao (Autor:in) / Zhou, Jianjiang (Autor:in)


    Erscheinungsdatum :

    01.06.2025


    Format / Umfang :

    1497699 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Compact High-resolution Millimeter-wave Radar for Front-obstacle Detection

    Yamano, C. / Hoshino, K. / Natsume, K. et al. | SAE Technical Papers | 2006



    Compact high-resolution millimeter-wave radar for front-onstacle detection

    Natsume,K. / Miyake,Y. / Hoshino,K. et al. | Kraftfahrwesen | 2006


    Microwave and millimeter-wave ranging for coherent distributed RF systems

    Hodkin, Jason E. / Zilevu, Kojo S. / Sharp, Matthew D. et al. | IEEE | 2015