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检索条件"任意字段=2nd IEEE Sensor Array and Multichannel Signal Processing Workshop"

共 469 条记录，以下是221-230 订阅

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Underwater target localization based on DOAs of sensor array network

Underwater target localization based on DOAs of sensor array...

引用

2010 2nd International Conference on signal processing Systems, ICSPS 2010

作者： Biao, Wang Guang, Yang Zhibing, Xie Weibo, Zhong College of Electronic Information Jiangsu University of Science and Technology Zhenjiang China College of Engineering Ocean University of China Qingdao China

ISBN: (纸本)9781424468911

The underwater target localization problem is one important application for underwater acoustic sensor networks. A novel passive source location algorithm for underwater acoustic sensor networks is proposed, which is suitable to both two-dimensional and three-dimensional networks. The proposed algorithm firstly studies the precision of directional of arrival (DOA) for underwater acoustic sensor array and applies it to set up the statistic model of target localization based on DOAs. According to the model, the maximum likelihood (ML) method is used to estimate the target Location based on DOAs by sensor array nodes. Lastly, the result of simulation has shown the application validity and studied the precision performance of the algorithm. © 2010 ieee.

关键词： Maximum likelihood

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Order-controlled multiple shift SBR2 algorithm for para-Hermitian polynomial matrices

Order-controlled multiple shift SBR2 algorithm for para-Herm...

引用

2016 ieee sensor array and multichannel signal processing workshop, SAM 2016

作者： Wang, Zeliang McWhirter, John G. Corr, Jamie Weiss, Stephan School of Engineering Cardiff University Cardiff United Kingdom Department of Electronic and Electrical Engineering University of Strathclyde Glasgow United Kingdom

ISBN: (纸本)9781509021031

In this work we present a new method of controlling the order growth of polynomial matrices in the multiple shift second order sequential best rotation (MS-SBR2) algorithm which has been recently proposed by the authors for calculating the polynomial matrix eigenvalue decomposition (PEVD) for para-Hermitian matrices. In effect, the proposed method introduces a new elementary delay strategy which keeps all the row (column) shifts in the same direction throughout each iteration, which therefore gives us the flexibility to control the polynomial order growth by selecting shifts that ensure non-zero coefficients are kept closer to the zero-lag plane. Simulation results confirm that further order reductions of polynomial matrices can be achieved by using this direction-fixed delay strategy for the MS-SBR2 algorithm. © 2016 ieee.

关键词： Eigenvalues and eigenfunctions

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2007 2nd ieee International workshop on Computational Advances in Multi-sensor Adaptive processing, CAMPSAP

2007 2nd IEEE International Workshop on Computational Advanc...

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2007 2nd ieee International workshop on Computational Advances in Multi-sensor Adaptive processing, CAMPSAP

ISBN: (纸本)9781424417148

The proceedings contain 77 papers. The topics discussed include: semi-supervised life-long learning with application to sensing;hybrid adaptive receiver processing for multistatic radar;adaptive sensing of dynamic target state in heavy sea clutter;multi-channel parametric estimator fast block matrix inverses;particle filtering-based target tracking in binary sensor networks using adaptive thresholds;on adaptive sensing of complex communication channels;a Bayesian estimation bound based on the optimal bias function;sparse Bayesian estimation of superimposed signal parameters;a lower bound for sequential estimators;experimental studies on direction finding via blind beamforming;reduction of spatial sampling requirement in sound-based synthesis;fast low-rank approximation for covariance matrices;a collaborative training algorithm for multi-sensor adaptive processing;and compress-and-forward relaying over parallel Gaussian channels.

关键词： Target tracking

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Nonlinear dynamical system based acoustic modeling for ASR

Nonlinear dynamical system based acoustic modeling for ASR

引用

ieee International Conference on Acoustics, Speech, and signal processing

作者： Warakagoda, nd Johnsen, MH NTNU Dept Telecommun N-7034 Trondheim Norway

ISBN: (纸本)0780370414

The work presented here is centered around a speech production model called Chained Dynamical System Model (CDSM) which is motivated by the fundamental limitations of the mainstream ASR approaches, The CDSM is essentially a smoothly time varying continuous state nonlinear dynamical system, consisting of two sub dynamical systems coupled as a chain so that one system controls the parameters of the next system. The speech recognition problem is posed as inverting the CDSM, for which we propose a solution based on the theory of Embedding. The resulting architecture, which we call Inverted CDSM (ICDSM) is evaluated in a set of experiments involving a speaker independent, continuous speech recognition task on the TIMIT database. Results of these experiments which can be compared with the corresponding results in the literature, confirm the feasibility and advantages of the approach.

关键词： Speech recognition

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Quantization effect on VLSI implementations for the 9/7 DWT filters.

Quantization effect on VLSI implementations for the 9/7 DWT ...

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ieee International Conference on Acoustics, Speech, and signal processing

作者： Spiliotopoulos, V Zervas, nd Andreopoulos, Y Anagnostopoulos, G Goutis, CE Univ Patras Dept ECE VLSI Design Lab Rion 26500 Greece

ISBN: (纸本)0780370414

In this paper, two basic approaches for implementing the 9/7 Filtering Unit, used in the Discrete Wavelet Transform, are addressed. The first is the lifting scheme approach and the second is the conventional, convolutional filter approach. Two architectures are examined for each approach, a simple - straightforward one and an optimized one, substituting the multipliers used for scaling with shift add operations. The quantization of the constants used in the calculations is thoroughly explored and the selection of the data-path bit-width is addressed. Experimental results based on hardware implementation, for several quantizations and for the different hardware architectures of the 9/7 filtering units are given.

关键词： Image processing

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Magnetic imaging of ferromagnetic shape with Mobile Hall sensor array system

Magnetic imaging of ferromagnetic shape with Mobile Hall Sen...

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2011 2nd ieee International Conference on signal and Image processing Applications, ICSIPA 2011

作者： Norhisam, M. Shin, N. Wei Marhaban, M. Hamiruce Suhaidi, S. Department of Electrical and Electronics Engineering University Putra Malaysia 43400 Selangor Malaysia

ISBN: (纸本)9781457702419

The Mobile Hall sensor array system is a dynamic moving device capable of ferromagnetic shape evaluation based on the magnetic flux leakage testing principle. The device consists of a linearly integrated 1-D Hall sensor array to detect magnetic field changes on a ferromagnetic shape under evaluation. The signal processing application software residing on a computer is developed for the Hall sensor array signals processing which leads to the magnetic image construction of magnetized ferromagnetic shape. This paper presents the principle of operation for Mobile Hall sensor array System in the shape detection of ferromagnetic materials. In addition, the signals array processing algorithm implemented in Hall sensor signals array processing application software is presented. The experimental results illustrated the magnetic image of specimens SS400 mild steel of various shape e.g square, round and triangle. The results proved the ability of Mobile Hall sensor array system to perform shape evaluation on ferromagnetic materials. © 2011 ieee.

关键词： Ferromagnetic materials

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A new bistatic GPR system using a passive optical sensor for landmine detection 2

A new bistatic GPR system using a passive optical sensor for...

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2nd International workshop on Advanced Ground Penetrating Radar

作者： Sato, M Tohoku Univ Ctr NE Asian Studies Sendai Miyagi 9808576 Japan

ISBN: (纸本)9076928045

A novel GPR system for stand off landmine detection is discussed. This is a bistatic GPR system, which use a TEM horn antenna for a transmitter and a passive optical electric field sensor as a receiver. A small size passive optical sensor scans on the ground surface and the acquired signal is used for synthetic aperture processing. Since the receiver is very small, it is suitable for scanning near the ground surfece, where landmines can be buried. Fundamental laboratory test shows its capability of imaging of buried objects.

关键词： bistatic radar GPR landmine detection optical electric field sensor

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Blind deconvolution and channel coding in SIMO multicarrier systems 2

Blind deconvolution and channel coding in SIMO multicarrier ...

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2nd ieee workshop on signal processing Advances in Wireless Communications, SPAWC 1999

作者： Gorokhov, Alexei CNRS-L2S Ecole Supkrieure d'Electricitk Plateau de Moulon Gif-sur-YvetteF-91192 United States

ISBN: (纸本)0780355997

The problem of bandwidth efficient data transmission in multi-sensor OFDM systems is considered. Contrary to the mono-sensor systems, the effects of frequency selective fading may be alleviated in the multi-sensor systems without using a wireless overhead due to the space diversity. A modulation scheme is proposed which allows to improve the reliability of data transmission in fading multipath environments and perform an accurate channel equalization with a minimal excess bandwidth and no substantial training. The numerical study confirms the efficiency of this method in such bandwidth expensive applications as wireless asynchronous transfer mode (WATM) networking. © 1999 ieee.

关键词： Frequency selective fading

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Image formation through walls using a distributed radar sensor array 32

Image formation through walls using a distributed radar sens...

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32nd Applied Imagery Pattern Recognition workshop

作者： Hunt, AR AKELA Inc Santa Barbara CA 93111 USA

ISBN: (纸本)0769520294

Through the wall surveillance is a difficult but important problem for both law enforcement and military personnel. Getting information on both the internal features of a structure and the location of people inside improves the operational effectiveness in search and rescue, hostage, and barricade situations. However, the electromagnetic properties of walls constrain the choices available as sensor candidates. We have demonstrated that a high range resolution radar operating between 450 MHz and 2 GHz can be used with a fixed linear array of antennas to produce images and detect motion through both interior and exterior walls. While the experimental results are good. it has been shown that the linear array causes signal processing artifacts that appear as ghosts in the resultant images. By moving toward a sensor concept where the antennas in the array are randomly spaced, the effect of ghost images can be reduced and operational and performance benefits Rained.

关键词： Microwave antennas

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A sidelobe-constraint direct data domain least square algorithm

A sidelobe-constraint direct data domain least square algori...

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2009 2nd International Congress on Image and signal processing, CISP'09

作者： Gaoxiang, Xing Zhiming, Cai Department of Electronics Engineering Naval University of Engineering Wuhan 430033 China

ISBN: (纸本)9781424441310

We present a modified direct data domain least square (D3LS) algorithm here to decrease the sidelobe level of a beampattern when the D3LS is used in non-stationary noisy circumstance . The proposed algorithm first determines the mainlobe region and preset the highest sidelobe level, then a sidelobe constraint is set on the beamforming algorithm to have a beam pattern with sidelobe level not higher than the preset value. A distortional uniformly linear array (ULA) with 23 sensors is used in simulation. It is shown by the simulation that the proposed algorithm can decrease the sidelobe level effectively and can reduce the effect for beampattern introduced by the disturbing errors. ©2009 ieee.

关键词： Least squares methods signal processing algorithms array signal processing Data engineering sensor arrays Covariance matrix Radar Sonar Interference Transmission line matrix methods

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