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

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STW project "advanced relocatable multi-sensor system for buried landmine detection" 2

STW project "advanced relocatable multi-sensor system for bu...

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2nd International workshop on Advanced Ground Penetrating Radar

作者： Ligthart, L Yarovoy, A Delft Univ Technol Fac Informat Technol & Syst Int Res Ctr Telecommun Transmiss & Radar NL-2628 CD Delft Netherlands

ISBN: (纸本)9076928045

Delft University of Technology has just finished its major efforts in the most challenging project, supported by the Dutch Technology Foundation STW. This four year project entitled "Advanced relocatable multi-sensor system for buried landmine detection" was the largest project in STW history. Within the scope of this project we have built up a unique expertise and knowledge in the whole GPR chain starting from all aspects in GPR technology and finishing with target classification and soil characterization. The paper describes the goals and results within this project.

关键词： Frequency Ground penetrating radar High-resolution imaging Landmine detection Microwave technology Radar detection Radar imaging signal processing algorithms signal resolution Ultra wideband radar

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array Coherence Tomography (ACT) imaging in clutter environment

Array Coherence Tomography (ACT) imaging in clutter environm...

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ieee Topical Conference on Wireless Communication Technology/2nd Wireless Grantees workshop

作者： Ishimaru, A Jaruwatanadilok, S Kuga, Y Univ Washington Dept Elect Engn Seattle WA 98195 USA

ISBN: (纸本)0780381963

We present a new antenna array signal processing technique which we name ACT (array Coherence Tomography) applicable to wireless communications. ACT is based on OCT (Optical Coherent Tomography) which is one of the exciting developments in medical optics in the last decade [1-6]. OCT can provide tissue images on the micro scale in situ and real time and has been developed as diagnostic technology for disease tissues and eyes. OCT combines confocal microscopy and hetrodyne technique, and one of its advantages is its ability to form a high-resolution image in the presence of diffusing tissues. © 2003 ieee.

关键词： Tissue

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Channel identification and sequential sequence estimation using antenna array in broadband mobile communications 2

Channel identification and sequential sequence estimation us...

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

作者： Matsumoto, Tadashi NTT Mobile Communications Network Inc. 3-5 Hikari-no-Oka Yokosuka Kanagawa239-8536 Japan

ISBN: (纸本)0780355997

This paper proposes the joint use of antenna array and sequential sequence estimation (SSE) technique for the equalization of multipath fading channels suffering from severe ISI. It is shown that with the proper use of the multiple stack algorithm (MSA), exploiting the redundant structure of the signal received by multiple antenna array elements can enhance the uniqueness of the sequence estimation, thereby significantly reducing the frame erasure probability. Three new algorithms are derived for vector channel identification, the results of which are used to calculate the Fano metric for SSE. The first algorithm uses just a temporal reference, and others use both temporal and spatial references. The impacts of using the temporal and spatial references are investigated in terms of the channel identification accuracy as well as overall frame erasure rate (ERR) and bit error rate (BER). The results of computer simulations are presented to compare the performances of the three algorithms. © 1999 ieee.

关键词： Antenna arrays

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Weight-Constrained Nested arrays with w(1) = w(2) = for Reduced Mutual Coupling 13

Weight-Constrained Nested Arrays with w(1) = w(2) = for Redu...

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13rd ieee sensor array and multichannel signal processing workshop, SAM 2024

作者： Kulkarni, Pranav Vaidyanathan, P.P. 136-93 California Institute of Technology Department of Electrical Engineering PasadenaCA91125 United States

ISBN: (纸本)9798350344813

It is well-known that appropriately designed sparse arrays can identify O(N^2) directions of arrivals (DOAs) using N sensors through the difference coarray domain. Many sparse arrays have been proposed in the past decade that also reduce the impact of mutual coupling by reducing the coarray weights at small lags. In this paper, we propose weight-constrained nested arrays (WCNA) that have coarray weights satisfying either w(1)=0 or w(1)=w(2)=0. These arrays are obtained by appropriately expanding a nested array and augmenting it with several additional sensors. We prove that the proposed arrays contain O(N^2) contiguous lags in their difference coarrays. Although the uniform segment in the coarray is not centered around 0, appropriately modified coarray-MUSIC can be applied to estimate the DOAs. We demonstrate through Monte-Carlo simulations that such arrays are robust to the presence of strong mutual coupling and can perform better than many other sparse arrays proposed in the literature when the mutual coupling is present. The proposed arrays are also observed to have longer uniform segments in the difference coarray than that of CADiS arrays (having w(1)= 0) and thus can identify more DOAs than CADiS arrays using coarray-MUSIC. © 2024 ieee.

关键词： Monte Carlo methods

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Research on An Emulational System about Estimation of The Underwater Target Azimuth Direction Finding

Research on An Emulational System about Estimation of The Un...

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2nd International Symposium on Intelligent Information Technology Application

作者： Liu, Wei Wang, Changming Guan, Qinjin Nanjing Univ Sci & Technol Coll Mech Engn Nanjing 210094 Jiangsu Peoples R China

ISBN: (纸本)9780769535050

The choice of algorithms and the hydrophone array is the key of getting high precision in underwater targets detection. Using LabVIEW and 8 channel data acquisition card the underwater targets noise was gathered. Based on the MATLAB, the algorithms of underwater targets estimation have been confirmed The water tank experiments have shown that this system can realize to acoustic signal gathering, processing. The results obtained in this paper can give reference for array shape and algorithms selection.

关键词： Azimuth Sonar equipment Object detection Data acquisition Acoustic noise Noise shaping MATLAB Underwater acoustics signal processing Shape

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Optimal design of DS-CDMA systems under multipath fading channel: array signal processing approach 2

Optimal design of DS-CDMA systems under multipath fading cha...

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

作者： Hung, Jui-Chung Chen, Bor-Sen Department of Electrical Engineering National Tsing Hua University Hsinchu300 Taiwan

ISBN: (纸本)0780355997

In this study, based on multirate technique, the detection problem of DS-CDMA systems is transformed to an equivalent signal of beamforming systems. In this situation, the channel plus spreading code in DS-CDMA systems is equivalent to a steering matrix in the signal processing of beamforming systems. Based on an optimum beamforming technique, an optimum detection design is proposed for DS-CDMA systems. Furthermore, stochastic processes model the time-varying tap coefficients of multipath fading channels. The channel parameter or steering matrix estimation algorithm is developed based on the Kalman state estimation method. Finally, an adaptive design for DS-CDMA systems is also discussed in this paper. Consistency of the proposed method is shown, and some illustrative simulations are presented. © 1999 ieee.

关键词： Beamforming

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Impulse radio UWB system architecture for smart wireless sensor networks

Impulse radio UWB system architecture for smart wireless sen...

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2nd International workshop Networking with Ultra Wide Band workshop on Ultra Wide Band for sensor Networks

作者： Ruiz, Beatriz Quijano Vázquez, Álvaro Álvarez Rubio, Manuel Lobeira García, Jose Luís García ACORDE SA CDTUC ETSIIT Avda. Los Castros s/n 39005 Santander Spain Dept. Ing. de Comunicaciones Universidad de Cantabria ETSIIT Avda. Los Castros s/n 39005 Santander Spain

ISBN: (纸本)0780391268

This paper introduces a proposal for an Impulse Radio Ultra Wideband transceiver system architecture, suitable for its use in smart wireless sensor networks, providing both communication and location capabilities. The concept of smart sensor network has recently gained a huge attention into the scientific world and business markets, mainly due to its feasible applications for environment measurements, threat detection and avoidance, surveillance or localisation purposes. The system architecture description covers from baseband and processing, to RF, pulse generation, pulse reception, signal sampling and synchronization issues. © 2005 ieee.

关键词： Telecommunication networks

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DOA-based adaptive array antenna testbed system

DOA-based adaptive array antenna testbed system

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ieee Topical Conference on Wireless Communication Technology/2nd Wireless Grantees workshop

作者： Kim, M Ichige, K Arai, H Yokohama Natl Univ Div Elect & Comp Engn Yokohama Kanagawa 240 Japan

ISBN: (纸本)0780381963

In recent and future wireless cellular communications, Co-Channel Interference (CCI) is very critical problem. At basestation, adaptive array antenna technology exploiting spatial domain filtering with antenna array and digital signal processing can combat the CCI, thus the system capacity can be increased. Most algorithms for adaptive array antenna system have been studied. Most algorithms usually need directions of arrival (DOAs) of desired and interferer signals in advance. The DOA-based adaptive array antenna systems make use of the estimated DOAs in a beamformer in order to separate the desired signal from interferers spatially. But, of course, there are other types of algorithms that exploit temporal reference and not need the DOA information. The performance of DOA,-based beamforming is superior to that of other types of algorithms for small angular spread, while it has time-consuming tasks due to its large amount of computational burden [1]. © 2003 ieee.

关键词： Direction of arrival

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MEMEA 2007 2nd - ieee International workshop on Medical Measurement and Applications

MEMEA 2007 2nd - IEEE International Workshop on Medical Meas...

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MeMeA 2007 2nd - ieee International workshop on Medical Measurement and Applications

ISBN: (纸本)1424410800

The proceedings contain 22 papers. The topics discussed include: ultrasonic anemometer for the measurement of respiratory flow in the forced oscillation technique;implementation of SPR-biosensors for express-diagnostics of acute viral infection and mycotocsicosis;measurements of generated potentials by the electrodes of a cochlear implant;measurements of generated potentials by the electrodes of a cochlear implant;evaluation of water barrier function of human skin using super fast dew point hygrometer;development of EMFI-sensor based pressure sensitive insole for gait analysis;fetal electrocardiogram signal modeling using genetic algorithm;processing EEG signals for clinical interpretation in seizure-suspected patients;multiple channel electrooculogram classification using automata;haptic exercises for measuring improvement of post-stroke rehabilitation patients;and signal-shape locked loop (SSLL) as an adaptive separator of cardiac and respiratory components of bio-impedance signal.

关键词： Electrodes

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Monitoring inland waters with the APEX sensor, a wavelet approach

Monitoring inland waters with the APEX sensor, a wavelet app...

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workshop on Hyperspectral Image and signal processing

作者： Knaeps, E. Raymaekers, D. Sterckx, S. Bertels, L. Odermatt, D. VITO - Flemish Institute for Technological Research RSL - Remote Sensing Laboratories University of Zurich

ISBN: (纸本)9781424489077

In this study a new curve fitting approach is presented to derive TSM, CHL and CDOM concentrations in inland and coastal waters from water leaving-reflectance spectra. The approach is based on the wavelet transform and is tested on simulated water-leaving reflectance spectra. For simulations SIOPS and water concentrations, representative for the Scheldt river, were used. The results shown that the approach is less sensitive to errors in the atmospheric correction or specific sensor noise. The idea is based on the development of a new minimization criteria for curve fitting. Instead of minimizing the difference between modeled and measured spectra using a simple RMSE, the RMSE is now combined with specific wavelet features. Several types of errors and noise are added to the simulated spectra to find robust features. Two minimization criteria were found which are almost insensitive to a white error and less sensitive to adjacency effects. ©2010 ieee.

关键词： Curve fitting

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