Results 21 to 30 of about 123,247 (141)
Robust Adaptive Beamformer Based on Constant Modulus Penalty Criteria
International Journal of Aerospace Engineering, 2023 In this study, a robust adaptive beamformer based on constant modulus (CM) criteria is developed to improve the robustness of the array beamforming, which is a reconstructing minimal optimization for solving the mismatch problem of weight vector caused ...
Chuanhui Hao, Bin Zhang, Xubao Sun
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Sensors, 2020 An adaptive beamformer is sensitive to model mismatch, especially when the desired signal exists in the training samples. Focusing on the problem, this paper proposed a novel adaptive beamformer based on the interference-plus-noise covariance (INC ...
Di Yao +4 more
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Multi-Rank Adaptive Beamforming
IEEE/SP 13th Workshop on Statistical Signal Processing, 2005, 2005 This paper presents a multi-rank generalization of the Capon beamformer to accommodate model mismatch in situations where the unknown signal of interest lies in a multidimensional subspace. By expanding the beamforming subspace robustness (or diversity) is achieved at the expense of resolution.
Scharf, Louis L. +2 more
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Adaptive beamforming in the ocean. [PDF]
The Journal of the Acoustical Society of America, 1991 In the nonstationary ocean acoustic environment, the temporal coherence of the noise field may be substantially shorter than the time required to calculate the weights in frequency-domain adaptive beamformers with large numbers of degrees of freedom.
Craig Poling +3 more
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IEEE Access, 2017 A key requirement of an adaptive sensor array involves the ability to deterministically adjust the directional response of the array to reduce noise and reverberations, null interferences, and enhance the gain and recognition of the desired signal.
Sunday C. Ekpo +2 more
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Adaptive Array Beamforming Using a Chaotic Beamforming Algorithm [PDF]
International Journal of Antennas and Propagation, 2016 The Chaotic beamforming adaptive algorithm is new adaptive method for antenna array’s radiation pattern synthesis. This adaptive method based on the optimization of the Least Mean Square algorithm using Chaos theory enables fast adaptation of antenna array radiation pattern, reduction of the noisy reference signal’s impact, and the improvement of the ...
Ana Jovanović +2 more
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Adaptive Null Widening Beamforming Algorithm in Spatially Correlated Color Noise
Sensors, 2022 Under the background of spatially correlated color noise, the incidence angle of a jamming signal in a high-speed moving platform rapidly changes, which leads to the degradation of the anti-interference performance and the waveform distortion of the ...
Shijing Xiao, Bin Li, Qing Wang
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Design and analysis of Maxwell fisheye lens based beamformer
Scientific Reports, 2021 Antenna arrays and multi-antenna systems are essential in beyond 5G wireless networks for providing wireless connectivity, especially in the context of Internet-of-Everything.
Muhammad Ali Babar Abbasi +3 more
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Adaptive Beamformer Combined with Phase Coherence Weighting Applied to Ultrafast Ultrasound
Applied Sciences, 2018 Ultrafast ultrasound imaging is a promising technique for measurement of fast moving objects. In ultrafast ultrasound imaging, the high temporal resolution is realized at the expense of the lateral spatial resolution and image contrast.
Michiya Mozumi, Hideyuki Hasegawa
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Fast Wideband Beamforming Using Convolutional Neural Network
Remote Sensing, 2023 With the wideband beamforming approaches, the synthetic aperture radar (SAR) could achieve high azimuth resolution and wide swath. However, the performance of conventional adaptive wideband time-domain beamforming is severely affected as the received ...
Xun Wu +4 more
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