This article presents a cost-effective technique for designing robust adaptive beamforming algorithms based on efficient covariance matrix reconstruction with iterative spatial power spectrum (CMR-ISPS). The proposed CMR-ISPS approach reconstructs the interference-plus-noise covariance (INC) matrix based on a simplified maximum entropy power spectral density function that can be used to shape the directional response of the beamformer. First, we estimate the directions of arrival (DoAs) of the interfering sources with the available snapshots. We then develop an algorithm to reconstruct the INC matrix using a weighted sum of the outer products of steering vectors whose coefficients can be estimated in the vicinity of the DoAs of the interferences, which lie in a small angular sector. We also devise a cost-effective adaptive algorithm based on conjugate gradient techniques to update the beamforming weights and a method to obtain estimates of the signal of interest (SOI) steering vector from the spatial power spectrum. The proposed CMR-ISPS beamformer can suppress interferers close to the direction of the SOI by producing notches in the directional response of the array with sufficient depths. Simulation results are provided to confirm the validity of the proposed method and make a comparison to existing approaches.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Jammer Tracking Based on Efficient Covariance Matrix Reconstruction With Iterative Spatial Spectrum Sampling




    Publication date :

    2023-12-01


    Size :

    1396864 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    GNSS JAMMER DETECTION SYSTEM WITH OPTICAL TRACKING AND IDENTIFICATION

    PETERSEN WALTER D / SCHLEPPE JOHN B | European Patent Office | 2020

    Free access


    Covariance scaled sampling for monocular 3D body tracking

    Sminchisescu, C. / Triggs, B. | IEEE | 2001


    Covariance Scaled Sampling for Monocular 3D Body Tracking

    Sminchisescu, C. / Triggs, B. / IEEE | British Library Conference Proceedings | 2001


    Dual Purpose Jammer

    SANDS ISAAC JON | European Patent Office | 2023

    Free access