This article presents a compressed sensing-based time of arrival (TOA) and angle-of-arrival (AOA) estimation algorithm for orthogonal frequency division multiplexing (OFDM) radar systems. The algorithm is designed for noncooperative targets based on a uniform linear array using a cyclic prefix (CP) added OFDM signal. The algorithm makes three key technical contributions. First, the algorithm adopts the CP-based OFDM signal for the radar TOA/AOA estimation to suppress the multitarget interference and the impact of time delay on the subcarrier orthogonality. Second, this article exploits the structure of the CP-OFDM radar signal model to construct the optimization problem of the joint TOA/AOA recovery. The super-resolution AOA estimation is obtained by using a redundant dictionary containing much more basis than the number of antennas. Third, the algorithm proposes an efficient way to solve the optimization by utilizing the properties of the circulant matrix, fast Fourier transform, and Hadamard multiplication. The simulation results indicate the effectiveness of the proposed algorithm.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Super-Resolution TOA and AOA Estimation for OFDM Radar Systems Based on Compressed Sensing


    Beteiligte:
    Wu, Min (Autor:in) / Hao, Chengpeng (Autor:in)


    Erscheinungsdatum :

    2022-12-01


    Format / Umfang :

    3723621 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    High-resolution spectral estimation algorithms in OFDM radar

    Braun, Martin / Jondral, Friedrich K. | Tema Archiv | 2011


    Super-Resolution of Low-Quality Images Based on Compressed Sensing and Sequence Information

    Zhou, Ruofei / Wang, Gang / Zhao, Donglai et al. | IEEE | 2019


    A MODULATION RECOGNITION METHOD FOR OFDM BASED ON COMPRESSED SENSING

    Yao, Yang / Tu, Weijuan / Guo, Chengjun et al. | TIBKAT | 2022