Abstract
A problem in radar is the significant degradation in system performance when the power of jamming electromagnetic signals is larger than the desired signal. To address this problem, we herein propose a blind jamming signal suppression method using an array antenna. The proposed method determines the matrix that projects onto the space orthogonal to the signal subspace of the jamming signals from the eigenvectors of the correlation matrix of the received signal composed of the jamming signal component. Then the projection transform is applied to the received signal vector containing the desired signal. By using the eigenvector corresponding to the maximum eigenvalue of the correlation matrix of the output signal vector of the transform as the weighting coefficients, the signal-to-noise ratio (SNR) is improved by maximum ratio combining of the desired signal component. Based on a performance evaluation by computer simulation, the jamming signal suppression capability exhibits improvement compared to the power inversion adaptive array of the same blind processing. © 2006 Wiley Periodicals, Inc. Electron Comm Jpn Pt 1, 89(12): 45–53, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecja.20303
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