Results 61 to 70 of about 1,425,062 (351)
Sensors, 2020 Passive sonar is widely used for target detection, identification and classification based on the target radiated acoustic signal. Under the influence of Doppler, generated by relative motion between the moving target and the sonar array, the received ...
Wei Guo +4 more
doaj +1 more source
Azimuth Estimation of Multi-LFM Signals Based on Improved Complex Acoustic Intensity Method
Journal of Marine Science and Engineering, 2022 The complex acoustic intensity method is one of the common methods used for the azimuth estimation of single-vector sensors. However, this method establishes a relationship between frequency and azimuth, which limits its practical applicability for ...
Yan Wang +4 more
doaj +1 more source
Acoustic resonances in microfluidic chips: full-image micro-PIV experiments and numerical simulations [PDF]
, 2006 We show that full-image micro-PIV analysis in combination with images of transient particle motion is a powerful tool for experimental studies of acoustic radiation forces and acoustic streaming in microfluidic chambers under piezo-actuation in the MHz ...
Abbott +32 more
core +3 more sources
Advanced Functional Materials, EarlyView.The dielectric properties of clays are studied on the level of individual monolayers and functional double stacks. The material breakdown characteristics and charge storage performance are analyzed. For illustration, a defined charge pattern representing a cuneiform character is produced, written into a microscopic clay tile, referencing the origins of
Sebastian Gödrich +6 more
wiley +1 more source
Scientific ReportsSeismocardiographic (SCG) signals are chest wall vibrations induced by cardiac activity and are potentially useful for cardiac monitoring and diagnosis.
Sherif Ahdy +4 more
doaj +1 more source
Beamforming interferometry bathymetry method based on multi-coprime sensor array
International Journal of Distributed Sensor Networks, 2019 Recently, coprime array has been a popular research field in the application of direction-of-arrival estimation. Compared with uniform linear array, coprime array can be used to expand array aperture with fewer sensors, and it also has a nice direction ...
Tian Zhou +4 more
doaj +1 more source
Analysis of SNR Metrics for a Typical Underwater Acoustic OFDM System
IEEE Access, 2019 Signal to noise ratios (SNRs) are universal metrics for the performance analysis of communication systems. In underwater acoustic orthogonal frequency division multiplexing (OFDM) systems, compared with the time domain input SNR (ISNR), the pilot SNR ...
Gang Qiao +4 more
doaj +1 more source
Remote Sensing, 2022 Conventional energy detection is a robust method that is usually applied to underwater broadband acoustic signal processing for towed arrays. Due to its low resolution, the weak target detection performance of conventional energy detection is severely ...
Anbang Zhao +4 more
doaj +1 more source
Spin dynamics of low-dimensional excitons due to acoustic phonons
, 2006 We investigate the spin dynamics of excitons interacting with acoustic phonons in quantum wells, quantum wires and quantum disks by employing a multiband model based on the $4\times4$ Luttinger Hamiltonian.
A Thilagam +18 more
core +1 more source
3D numerical simulation of hydro-acoustic waves registered during the 2012 negros-cebu earthquake [PDF]
, 2019 The paper investigates on the hydro-acoustic waves propagation caused by the underwater earthquake, occurred on 6 February 2012, between the Negros and Cebu islands, in the Philippines.
Bellotti, Giorgio +3 more
core +1 more source