Robust Virtual Array Transformation Beamforming Approach Against Jammer Motion

Zhao, Yu; Zhou, Yi; Yang, Ya Hui; Hao, Yike

doi:10.23919/aces48530.2019.9060519

Cited by 4 publications

(6 citation statements)

References 4 publications

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“…In order to further improve the performance of VAT null broadening beamforming approach, a modified beamforming approach is proposed based on literature [7]. Firstly, the reference position of the virtual antenna array is adjusted.…”

Section: Proposed Approachmentioning

confidence: 99%

“…Assuming that the signal to noise ratio is 0dB , the beam patterns of the conventional VAT beamforming approach, the VAT null broadening beamforming approach [7] and the proposed approach are shown in Figure 2.…”

Section: Beam Patterns Of the Three Approachesmentioning

confidence: 99%

“…The input SNR varies from -30 to 20dB. The output SINRs versus input SNR of the conventional VAT beamforming approach, the robust VAT beamforming approach [7] and the proposed approach are shown in Figure 4. It can be obtained from Figure 4 that, the output SINR of the proposed approach and the robust VAT beamforming are both much better than that of the conventional VAT beamforming.…”

Section: Output Sinrs Versus Input Snr Of the Three Approachesmentioning

confidence: 99%

“…The spatial projection technique is introduced in literature [6], by which the component of the interference is strengthened, and the null depth and output performance of VAT beamforming is greatly improved. Besides, the robustness of VAT beamforming against jammer motion is improved by expanding the covariance matrix and forming broad nulls [7].…”

Section: Introductionmentioning

confidence: 99%

“…A modified beamforming approach is proposed based on literature [7], and the performance of the VAT null broadening beamforming can be further improved. The reference position of the virtual antenna array is adjusted.…”

Section: Introductionmentioning

confidence: 99%

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Modified robust virtual array transformation null broadening beamforming approach

Zhao

Yang²,

Zhang³

et al. 2023

Third International Conference on Computer Vision and Data Mining (ICCVDM 2022)

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The virtual antenna array technology focuses on the methods of transforming the real antenna array into virtual antenna array. Virtual array transformation (VAT) can be used to realize virtual antenna array beamforming. The degrees of freedom of antenna array can be increased and more interference is inhibited. The robustness of the VAT beamforming against jammer motion can be improved by forming broad nulls. The performance of the VAT null broadening beamforming is better than that of the conventional VAT beamforming. A modified beamforming approach is proposed, and the performance of the VAT null broadening beamforming can be further improved. The reference position of the virtual antenna array is adjusted. The position that is one element space away from the antenna array is chosen as the reference position instead of the position that is at one end side of the antenna array. Besides, the conjugate covariance matrix is introduced into the expended covariance matrix, which is constructed by the Kronecker product of the covariance matrix of virtual array and its conjugate. According to theoretical analysis, more information can be obtained by the modified approach, so the performance of VAT null broadening beamforming can be improved.

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Section: Proposed Approachmentioning

confidence: 99%

Section: Beam Patterns Of the Three Approachesmentioning

confidence: 99%

Section: Output Sinrs Versus Input Snr Of the Three Approachesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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