Robust Adaptive Transmit Beamforming under the Constraint of Low Peak-to-Average Ratio [PDF]
Sensors, 2022 In radar detection, in order to make the beam have variable directivity, a Capon beamformer is usually used. Although this traditional beamformer enjoys both high resolution and good interference suppression, it usually leads to high sidelobe and is ...
Hongtao Li +3 more
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Convolution of Barker and Mutually Orthogonal Golay Complementary Codes for Ultrasonic Testing [PDF]
SensorsUltrasonic testing (UT) is a vital nondestructive testing (NDT) technique used to evaluate the integrity of materials and structures. However, conventional excitation signals often suffer from significant attenuation in highly attenuative materials ...
Chengxiang Peng +4 more
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Design of 2D Sparse Array Transducers for Anomaly Detection in Medical Phantoms [PDF]
Sensors, 2020 Aperiodic sparse 2D ultrasonic array configurations, including random array, log spiral array, and sunflower array, have been considered for their potential as conformable transducers able to image within a focal range of 30–80 mm, at an operating ...
Xiaotong Li +2 more
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A Novel Method for Designing General Window Functions with Flexible Spectral Characteristics [PDF]
Sensors, 2018 In the field of sensor signal processing, windows are time-/frequency-domain weighting functions that are widely applied to reduce the well-known Gibbs oscillations.
Yinghao Sun +3 more
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MIMO-OFDM JSAC Waveform Design Based on Phase Perturbation and Hybrid Optimization [PDF]
SensorsWith the increasing sophistication of electromagnetic environments in modern combat platforms, joint sensing and communication (JSAC) technology has emerged as a critical research frontier.
Zheming Guo, Baixiao Chen, Shuai Peng
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Sidelobe suppression for phase-coded pulse by mainlobe windowing
The Journal of Engineering, 2019 Mismatched filter is an important technique to suppress the sidelobes of phase-coded pulses. Here, the authors propose a mainlobe windowing procedure, by which a much lower sidelobe level can be obtained at a slightly signal-to-noise ratio loss. Based on
Jiacen Xu, Lixiang Ren, Haofei Wang
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Eigenspace-Based Generalized Sidelobe Canceler Beamforming Applied to Medical Ultrasound Imaging [PDF]
Sensors, 2016 The use of a generalized sidelobe canceler (GSC) can significantly improve the lateral resolution of medical ultrasound systems, but the contrast improvement isn’t satisfactory.
Jiake Li +4 more
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IEEE Access, 2022 This study exploits high-order p-norm to uniformly represent the peak sidelobe level (PSL) and integrated sidelobe level (ISL) commonly used in waveform optimization, and presents a unified optimization objective function by considering the requirement ...
Meng Xia, Shichuan Chen, Xiaoniu Yang
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Hybrid Constructions of Binary Sequences With Low Autocorrelation Sideobes
IEEE Access, 2021 In this work, a classical problem of the digital sequence design, or more precisely, finding binary sequences with optimal peak sidelobe level (PSL), is revisited.
Miroslav Dimitrov +2 more
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Optimal Mismatched Filter Design by Combining Convex Optimization With Circular Algorithm
IEEE Access, 2022 Mismatched filters (MMF) have been intensively explored for linear-frequency modulation (LFM) waveform sidelobe reduction. Unlike other design strategies, the use of convex optimization (CO) techniques is able to find the optimal design.
Ling Jin, Ju Wang, Yi Zhong, Duo Wang
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