Owing to the large degrees of freedom and reduced mutual coupling by generating difference coarrays, nonuniform linear arrays have aroused great interest in direction of arrival estimation. Previous works have shown some improved sparse arrays, while few find the common features hidden within these structures. In this article, we define a generic-coarray concept to reveal the impacts of variable ranges and element spacing on the uniform degrees of freedom (uDOFs), by which the sufficient condition for the connected coarrays is derived. We then propose an enhanced and generalized coprime array (EGCA) structure from the generic-coarray perspective. We show that the closed-form expression for the range of uDOFs is a function of sensor numbers and interelement spacing. We prove that, by coarray extension and hole filling, the optimized EGCA possesses more uDOFs than the previous coprime arrays. Furthermore, EGCA also provides the minimum number of sensor pairs with small separation. Simulations verify the superiority of EGCA using the subspace-based algorithm.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Enhanced and Generalized Coprime Array for Direction of Arrival Estimation


    Beteiligte:
    Shi, Junpeng (Autor:in) / Wen, Fangqing (Autor:in) / Liu, Yongxiang (Autor:in) / Liu, Zhen (Autor:in) / Hu, Panhe (Autor:in)


    Erscheinungsdatum :

    2023-04-01


    Format / Umfang :

    1735318 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Direction of Arrival Estimation with Uniform Planar Array

    Wei, Lili / Li, Qian / Wu, Geng | IEEE | 2017


    Estimation of Direction-of-Arrival by an Active Array

    Xu, Hongbo / Su, Yi / Huang, Chunlin et al. | IEEE | 2008


    Direction of arrival estimation

    CHEBIYYAM VENKATA SUBRAHMANYAM CHANDRA SEKHAR / CHO NAM GOOK / DUARTE NATHAN et al. | Europäisches Patentamt | 2022

    Freier Zugriff

    Direction of Arrival (DOA) Estimation

    Gamba, Jonah | Springer Verlag | 2019