With the increasing number of radar-equipped vehicles in dense traffic situations, millimeter wave radars are suffering from serious interference problems. Therefore, this article presents a novel bi-level $l_{1}$ optimization based approach for reducing interferences between automotive radars for range, velocity and angle measurement. Firstly, sparse difference analysis between the interfering signal and the target signal is investigated. According to the analysis results, one bi-level based signal optimization model is further derived by using $l_{1}$ -norm penalized least squares. This bi-level optimization enables a trade-off between suppressing interference and preserving radar targets. Specifically, in the first $l_{1}$ level, the interfering signal is first optimized as the “desired signal”, while the target is considered as “noise”. Meanwhile, sparse optimization is applied on the target signals in the frequency domain at the second $l_{1}$ level. Finally, the iterated soft-thresholding algorithm is used to optimize the proposed model. In real road interference suppression experiments, the proposed method improves the signal to interference plus noise ratio (SINR) for the target from 5.06 dB to 19.26 dB in the range-Doppler domain and from 6.86 dB to 22.10 dB in the azimuth spatial domain.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Bi-Level l1 Optimization-Based Interference Reduction for Millimeter Wave Radars


    Contributors:
    Xu, Zhihuo (author)


    Publication date :

    2023-01-01


    Size :

    4378943 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Interference Suppression for Automotive Millimeter-Wave Radars With Fused Lasso

    Yuan, Min / Jiang, Chen / Zhang, Yixiong et al. | IEEE | 2024


    Millimeter-wave radars for automotive use

    Takehana, T. / Iwamoto, H. / Sakamoto, T. et al. | Tema Archive | 1988


    EMERGENCY STEERING SYSTEM BASED ON MILLIMETER-WAVE RADARS

    HAN GAOFENG / HUANG LIQUAN / HUANG XIUFANG | European Patent Office | 2023

    Free access


    ANTI-INTERFERENCE METHOD, APPARATUS AND SYSTEM BASED ON VEHICLE-MOUNTED MILLIMETER WAVE RADARS, AND VEHICLE

    XU CHI / JI HAOJIE / WANG YUNPENG et al. | European Patent Office | 2022

    Free access