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
doaj +2 more sources
Nonlinear Harmonic Distortion of Complementary Golay Codes. [PDF]
Ultrason Imaging, 2023 Recent advances in electronics miniaturization have led to the development of low-power, low-cost, point-of-care ultrasound scanners. Low-cost systems employing simple bi-level pulse generation devices need only utilize binary phase modulated coded ...
Hamilton F +4 more
europepmc +4 more sources
Analysis of Non Linear Frequency Modulation (NLFM) Waveforms for Pulse Compression Radar [PDF]
Jurnal Elektronika dan Telekomunikasi, 2018 Non Linear Frequency Modulation (NLFM) method can suppress the peak sidelobe level without additional windowing function. NLFM doesn’t require any weighting function because it has inbuilt one.
Muhamad Ridwan Widyantara +4 more
doaj +3 more sources
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
doaj +2 more sources
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
doaj +2 more sources
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
doaj +2 more sources
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
doaj +2 more sources
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
doaj +2 more sources
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
doaj +1 more source
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
doaj +1 more source