Results 1 to 10 of about 14,004 (260)
A Robust Capon Beamforming Algorithm with Desired Signal Steering Vector Correction [PDF]
SensorsThe conventional Capon beamforming algorithm can achieve a high gain in the direction of desired signals and zero-trapping in the direction of interfering signals, providing a high output signal-to-interference-plus-noise ratio (SINR).
Zhiqi Gao +5 more
doaj +4 more sources
Robust Adaptive Beamforming Algorithm Based on Improved Generalized Linear Combination [PDF]
SensorsConventional adaptive beamforming algorithms often suffer from significant performance degradation when steering vector mismatches and covariance matrix estimation errors occur.
Zhiqi Gao +5 more
doaj +2 more sources
Journal of Marine Science and Engineering, 2023 In sonar systems, the performance of adaptive beamformers severely degrades when mismatches occur between the actual and presumed steering vectors of the desired signal, mainly due to hydrophone position errors, amplitude-phase errors, and the scattered ...
Yan Dai, Chao Sun
doaj +3 more sources
Robust Detection in MIMO Radar With Steering Vector Mismatches
IEEE Transactions on Signal Processing, 2019 We address a robust detection problem for MIMO radars in Gaussian noise with unknown covariance matrix, for the mismatched case where the nominal transmit (or receive) steering vector may not be aligned with the true transmit (or receive) steering vector. Subspace models are adopted for taking into account these mismatches.
Jian Li
exaly +2 more sources
Robust adaptive beamforming based on zone orthogonal constraint and steering vector estimation [PDF]
JASA Express Letters, 2023 This Letter solves steering vector estimation under mismatch for adaptive beamforming. The proposed beamformer implements a stepwise estimation of steering vector, and zone orthogonal constraint is added first based on adaptive constraint framework from ...
Kun Guo +4 more
doaj +1 more source
Robust Range Ambiguous Deceptive Target Suppression Based on Covariance Matrix Reconstruction
Remote Sensing, 2021 When the deceptive targets are in the ambiguious range bin but are received at the same range gate with the desired target by the array, the traditional multiple-input multiple-output (MIMO) radar is not able to discriminate between them.
Zhuang Xie +4 more
doaj +1 more source
Flexible Null Broadening Robust Beamforming Based on JADE
Applied Sciences, 2022 In order to flexibly and completely suppress dynamic interference, a flexible and robust beamforming based on JADE is proposed in this paper. In addition, it is insensitive to the gain–phase errors of the array.
Yulong Liu +3 more
doaj +1 more source
Blind Wideband Beamforming Algorithm Based on the Uncertainty Set [PDF]
Journal of Geodesy and Geoinformation Science, 2021 Without prior knowledge, the steering vector estimation error of the desired signal will deteriorate the beamforming performance to some extent.To solve this problem, a space-time blind wideband beamforming algorithm based on the uncertainty set is ...
Chao REN,Zhengxuan ZHANG,Enyuan TU
doaj +1 more source
Off‐grid direction‐of‐arrival estimation for nested arrays via uncertainty set extraction
Electronics Letters, 2021 Here, a novel off‐grid direction‐of‐arrival (DOA) estimation algorithm for nested arrays in the context of sparse recovery is proposed. The framework of existing off‐grid approaches is to correct the on‐grid parameter with a grid mismatch variable.
Zhen Chen +3 more
doaj +1 more source
Large Direction-of-Arrival Mismatch Correction for Adaptive Beamforming
IEEE Access, 2022 Direction-of-arrival (DOA) mismatch can degrade the performance of adaptive beamforming algorithms. Thus, a projection method is proposed to correct this mismatch.
Lin Chang +4 more
doaj +1 more source