Results 231 to 240 of about 26,151 (258)

Asymptotic performance of optimal gain-and-phase estimators of sensor arrays

IEEE Transactions on Signal Processing, 2000
This paper deals with the asymptotic behavior of optimal gain-and-phase estimators of sensor arrays. Three well-known algorithms for estimating angles of arrival are the following: (i) weighted noise subspace fitting (WNSF), (ii) unconditional maximum likelihood (UML), (iii) conditional maximum likelihood (CML).
Qi Cheng 0003, Yingbo Hua, Petre Stoica
openaire   +1 more source

Optimization of beam patterns for acoustic array sensors

Sensors and Actuators A: Physical, 1994
Abstract Acoustic sensors comprising beam-forming and electronic scanning equipment typically use a cylindrical multi-element transducer. When received signals are added without any delays, a wide-beam sensor is obtained. Unfortunately, the shape of the beam and the level of the side lobes is often far from satisfactory.
openaire   +1 more source

Optimization of adaptive linear sensor node array in Wireless Sensor Network

2009 Asia Pacific Microwave Conference, 2009
This paper presents a method of optimizing sensor node coordination in order to reassign the nodes in linear array arrangement to form a linear antenna array. This linear sensor node array (LSNA) is constructed within random sensor node deployment.
Nik Noordini Nik Abd Malik, Mazlina Esa, Sharifah Kamilah Syed Yusof   +2 more
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Optimization of magnetic sensor arrays for current measurement based on swarm intelligence and D‐optimality

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2009
PurposeThe purpose of this paper is to improve the accuracy of innovative current transducers based on magnetic sensor arrays.Design/methodology/approachThe positions and the orientations of the magnetic sensors are optimized. The objective function is defined according to D‐optimality theory and the optimization problem solved using particle swarm ...
DI RIENZO, LUCA, ZHANG, ZICHI
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About estimation of optimal number of sensors in sensor array system based on PARAFAC decomposition

2012 8th International Symposium on Communication Systems, Networks & Digital Signal Processing (CSNDSP), 2012
Identification of multiple sources in sensor array system can be accomplished by a powerful multilinear algebra model, PARAFAC (parallel factor) decomposition. To guarantee the accuracy of the identification of close sources (the smallest angle difference is 1°) by PARAFAC algorithm, increasing the number of sensors is a solution.
Liu, Xuefeng, Bourennane, Salah, Fossati, Caroline   +2 more
openaire   +2 more sources

Greedy Optimization of Sensor Array Geometry for Magnetocardiographic Source Localization

IEEE Transactions on Biomedical Engineering
Until recently, magnetocardiography (MCG) studies were performed using SQUID systems, consisting of a planar array of sensors with uniform spacing. The introduction of optically-pumped magnetometers (OPMs) now enables the deployment of large, conformal arrays, in which the sensors can be mounted on a wearable vest at nearly any location.
Barry D. Van Veen, Matti Stenroos, Ronald T. Wakai   +2 more
openaire   +2 more sources

An Interpretable Sensor Selection Strategy for Array Optimization and Performance Enhancement

ACS Sensors
As more sensors are integrated into electronic nose (E-nose) systems to enhance gas detection accuracy, multitasking capabilities, and expand application scenarios, several challenges arise. These challenges include issues such as cross-sensitivity, increased hardware cost, heightened computational complexity, and information redundancy, due to the ...
Haixia Mei, Jingyi Peng, Tao Wang, Bowei Zhang, Fuzhen Xuan   +4 more
openaire   +2 more sources

Optimal configuration of micro touch sensor array structure

Proceedings of 2002 International Symposium on Micromechatronics and Human Science, 2003
In this paper, the mathematical model, which is used to optimize configuration of micro touch sensor array structure, is derived. The main focus is on improving the sensitivity of micro touch sensor array. The micro touch sensor array is fabricated by PZT thin film which is synthesized by hydrothermal method.
null Liqun Du, null Guiryong Kwon, F. Arai, T. Fukuda, K. Itoigawa, Y. Tukahara   +5 more
openaire   +1 more source

The optimization of low cost integrated pyroelectric sensor arrays

Sensors and Actuators A: Physical, 1994
Abstract A matrix formalism for optical and thermal waves has been developed to provide an efficient tool for the device modelling and optimization of layered pyroelectric sensor structures. The performance of integrated pyroelectric sensors can be improved by a reduction of the heat flow from the pyroelectric element to the silicon chip. This can be
Lienhard, Daniel, Nitschke, Stefan, Ploss, Bernd, Ruppel, Wolfgang, Münch, Waldemar von   +4 more
openaire   +1 more source

Microphone array sensor placement optimization in reverberant environments

The Journal of the Acoustical Society of America, 1997
Microphone arrays can be used for high-quality sound pickup in reverberant and noisy environments. The beamforming capabilities of microphone array systems allow highly directional sound capture, providing a superior signal-to-noise ratio (SNR) when compared to single microphone performance.
Daniel V. Rabinkin, Richard J. Renomeron, James L. Flanagan   +2 more
openaire   +1 more source