检索结果-内蒙古大学图书馆

您好，读者！请登录

内蒙古大学图书馆

首页
概况
党建
资源
服务
科研支持
- 论文收录引用证明
- 科技查新
知识产权
档案馆
帮助

咨询与建议

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

您的常用邮箱：*

您的手机号码：*

问题描述：

当前已输入0个字，您还可以输入200个字

全部搜索
期刊论文
图书
学位论文
标准
纸本馆藏
外文资源发现
数据库导航
超星发现

高级检索

时间限定

出版年份：

文献类型

图书期刊文献学位论文多媒体

馆藏选择

电子馆藏纸本馆藏

核心期刊

全部期刊 SCI 收录期刊 SSCI 收录期刊 EI 收录期刊 CSCD 收录期刊 CSSCI 收录期刊

语言

中文英文

文献类型

期刊文献图书学位论文标准纸本馆藏

帮助

文字说明：

T=题名（书名、题名），A=作者（责任者），K=主题词，P=出版物名称，PU=出版社名称，O=机构（作者单位、学位授予单位、专利申请人），L=中图分类号，C=学科分类号，U=全部字段，Y=年（出版发行年、学位年度、标准发布年）

检索规则说明：

AND代表“并且”；OR代表“或者”；NOT代表“不包含”；(注意必须大写,运算符两边需空一格)

检索范例：

范例一：(K=图书馆学 OR K=情报学) AND A=范并思 AND Y=1982-2016
范例二：P=计算机应用与软件 AND (U=C++ OR U=Basic) NOT K=Visual AND Y=2011-2016

分类表

所选分类

>> <<

限定检索结果

文献类型

919 篇 会议
12 篇 期刊文献

馆藏范围

931 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

458 篇 工学
- 308 篇 电气工程
- 156 篇 信息与通信工程
- 105 篇 计算机科学与技术...
- 76 篇 机械工程
- 51 篇 测绘科学与技术
- 41 篇 软件工程
- 34 篇 仪器科学与技术
- 31 篇 电子科学与技术（可...
- 20 篇 控制科学与工程
- 7 篇 生物医学工程（可授...
- 5 篇 力学（可授工学、理...
- 5 篇 光学工程
- 5 篇 化学工程与技术
- 4 篇 材料科学与工程（可...
- 4 篇 航空宇航科学与技...
- 3 篇 交通运输工程
- 2 篇 动力工程及工程热...
- 2 篇 生物工程
- 2 篇 安全科学与工程
88 篇 理学
- 52 篇 数学
- 23 篇 系统科学
- 20 篇 物理学
- 18 篇 统计学（可授理学、...
- 5 篇 化学
- 4 篇 地球物理学
- 2 篇 生物学
50 篇 医学
- 50 篇 临床医学
7 篇 管理学
- 5 篇 管理科学与工程(可...
- 2 篇 工商管理
2 篇 法学
- 2 篇 社会学
1 篇 经济学
1 篇 教育学

主题

227 篇 array signal pro...
165 篇 signal processin...
112 篇 sensor arrays
106 篇 estimation
85 篇 arrays
81 篇 signal to noise ...
79 篇 conferences
77 篇 vectors
70 篇 signal processin...
66 篇 direction-of-arr...
54 篇 wireless sensor ...
52 篇 interference
40 篇 sensors
39 篇 covariance matri...
37 篇 simulation
37 篇 radar
37 篇 robustness
33 篇 receivers
32 篇 antenna arrays
32 篇 direction of arr...

机构

7 篇 xidian univ natl...
6 篇 department of el...
6 篇 temple univ dept...
6 篇 communication sy...
5 篇 school of inform...
5 篇 school of inform...
5 篇 communications r...
4 篇 natl univ def te...
4 篇 nanjing univ aer...
4 篇 school of electr...
4 篇 university of el...
4 篇 school of electr...
4 篇 tech univ darmst...
4 篇 city univ hong k...
4 篇 school of electr...
4 篇 department of el...
4 篇 national laborat...
4 篇 stevens inst tec...
4 篇 mcmaster univ de...
4 篇 mcmaster univ de...

作者

12 篇 marius pesavento
9 篇 gershman alex b.
8 篇 yimin d. zhang
7 篇 wei liu
7 篇 visa koivunen
7 篇 zhang yimin d.
7 篇 vorobyov sergiy ...
7 篇 guisheng liao
6 篇 martin haardt
6 篇 abdelhak m. zoub...
6 篇 liao guisheng
6 篇 lei huang
5 篇 bin liao
5 篇 nehorai arye
5 篇 gershman ab
5 篇 walter kellerman...
5 篇 pesavento marius
5 篇 koivunen visa
5 篇 piya pal
5 篇 ciuonzo domenico

语言

930 篇 英文
1 篇 其他

检索条件"任意字段=4th IEEE Sensor Array and Multichannel Signal Processing Workshop"

共 931 条记录，以下是571-580 订阅

全选清除本页清除全部题录导出标记到"检索档案"

详细简洁

排序：

On Transmitter Polarization Optimization for Target Scattering Matrix Estimation

On Transmitter Polarization Optimization for Target Scatteri...

引用

sensor array and multichannel signal processing workshop

作者： Kexiao Hu Shuli Shi Zhiwen Liu Yougen Xu School of Information and Electronics Beijing Institute of Technology Beijing China

the knowledge about target scattering matrix is essential for adapted and matched polarimetric target illumination. the Cramer-Rao bound (CRB) for target scattering matrix estimation in the presence of compound Gaussian clutter is known to be the function of transmitter polarization. the optimized probing waveform polarimetry design procedure thus can be performed to minimize the CRB for the “best” target scattering matrix estimation. However, to find the optimal transmitter polarization for target scattering matrix estimation, a suboptimal lattice search has to be used in the current method. In this contribution, we demonstrate that the mentioned CRB minimization for target scattering matrix estimation against compound Gaussian clutter can be achieved by simply transmitting several couples of probing pulses with orthogonal polarizations, for example, by transmitting alternately a number of horizontally and vertically polarized pulses just like the traditional scheme for directly measuring the target scattering matrix in the absence of clutter.

关键词： array signal processing sensor arrays Conferences

来源：评论

学校读者我要写书评

暂无评论

Blind detection of exclusive source activity periods in reverberant acoustic environments

Blind detection of exclusive source activity periods in reve...

引用

sensor array and multichannel signal processing workshop

作者： Robert M. Nickel Department of Electrical Engineering Bucknell University Lewisburg PA USA

Blind separation and dereverberation of acoustic sources is still considered a very challenging task despite many years of research and the availability of increasingly powerful computation engines. the complexity of the task can be significantly reduced for sources that exhibit sufficiently long exclusive activity periods (EAPs). EAPs are time intervals during which only one source is active and all other sources are inactive (i.e. zero). During EAPs the estimation of the underlying system parameters simplifies from a MIMO type to a SIMO type. the existence of EAPs is not guaranteed for arbitrary signal classes. EAPs occur very frequently, however, in recordings of conversational speech. In this paper we propose a new low complexity method for EAP detection which significantly outperforms earlier approaches.

关键词： Speech Mathematical model Equations Speech processing Acoustics Nickel Transfer functions

来源：评论

学校读者我要写书评

暂无评论

Statistical angular resolution limit for array radar with ultrawideband stochastic signals

Statistical angular resolution limit for array radar with ul...

引用

sensor array and multichannel signal processing workshop

作者： Xiaoli Zhou Hongqiang Wang Yongqiang Cheng Yuliang Qin Haowen Chen Bin Sun School of Electronic Science and Engineering National University of Defense Technology Changsha China

the 2-D angular resolution limit for array radar with ultrawideband (UWB) stochastic signals based on the statistical resolution theory is presented in this paper. the signal model of monostatic array radar with circular array configuration and UWB stochastic signals is established, while the resolution of two closely spaced targets is modelled as a binary hypothesis test. the statistical angular resolution limit (SARL) for array radar with UWB stochastic signals is derived based on the generalized likelihood ratio test (GLRT) with given probabilities of false alarm and detection. the effects of detection parameters, transmit waveforms, array geometry, signal-to-noise ratio and parameters of target on SARL are analysed. Compared with the conventional resolution defined by ambiguity function, the SARL reflects the practical resolution ability of radar and can provide an optimization criterion for radar system design.

关键词： arrays signal resolution Manganese Radar cross-sections Stochastic processes

来源：评论

学校读者我要写书评

暂无评论

Microphone array beampattern characterization for hands-free speech applications

Microphone array beampattern characterization for hands-free...

引用

sensor array and multichannel signal processing workshop

作者： Mohammad J. Taghizadeh Philip N. Garner Hervé Bourlard Idiap Research Institute Ecole Polytechnique Fédérale de Lausanne Switzerland Idiap Research Institute Martigny Switzerland

Spatial filtering is the fundamental characteristic of microphone array based signal acquisition, which plays an important role in applications such as speech enhancement and distant speech recognition. In the array processing literature, this property is formulated upon beam-pattern steering and it is characterized for narrowband signals. this paper proposes to characterize the microphone array broadband beam-pattern based on the average output of a steered beamformer for a broadband spectrum. Relying on this characterization, we derive the directivity beam-pattern of delay-and-sum and superdirective beamformers for a linear as well as a circular microphone array. We further investigate how the broadband beam-pattern is linked to speech recognition feature extraction; hence, it can be used to evaluate distant speech recognition performance. the proposed theory is demonstrated with experiments on real data recordings.

关键词： Speech arrays Microphones Speech recognition Broadband communication Narrowband signal to noise ratio

来源：评论

学校读者我要写书评

暂无评论

Adaptive blind source separation with HRTFs beamforming preprocessing

Adaptive blind source separation with HRTFs beamforming prep...

引用

sensor array and multichannel signal processing workshop

作者： Mounira Maazaoui Karim Abed-Meraim Yves Grenier Telecom ParisTech France Institut Télécom Télécom ParisTech France

We propose an adaptive blind source separation algorithm in the context of robot audition using a microphone array. Our algorithm presents two steps: a fixed beamforming step to reduce the reverberation and the background noise and a source separation step. In the fixed beamforming preprocessing, we build the beamforming filters using the Head Related Transfer Functions (HRTFs) which allows us to take into consideration the effect of the robot's head on the near acoustic field. In the source separation step, we use a separation algorithm based on the l 1 norm minimization. We evaluate the performance of the proposed algorithm in a total adaptive way with real data and varying number of sources and show good separation and source number estimation results.

关键词： array signal processing Blind source separation Robot sensing systems arrays Microphones

来源：评论

学校读者我要写书评

暂无评论

An Adaptive Sequential Competition Test for Beam Selection in Massive MIMO Systems

An Adaptive Sequential Competition Test for Beam Selection i...

引用

sensor array and multichannel signal processing workshop

作者： Mostafa Khalili Marandi Wolfgang Rave Gerhard Fettweis Electrical Engineering Department Amirkabir University of Technology Tehran Iran Photonic Engineering Group Amirkabir University of Technology Tehran Iran Photonics and Quantum Technologies Research School Nuclear Science and Technology Research Institute Tehran Iran

To solve the problem of beam selection or capturing the highest possible signal power, we propose a sequential test that can adapt to the SNR operating point and speed up the selection procedure in terms of the number of required observations in comparison to a perfectly tuned fixed length test assuming genie knowledge. the speed up gets higher for lower SNR and becomes of particular interest in massive Multiple Input Multiple Output (MIMO) systems using beamforming, where the number of candidate beams is large and exhaustive search can cause intolerable delay due to limited channel coherence time.

关键词： array signal processing MIMO communication signal to noise ratio Antenna arrays Training Probability density function Maximum likelihood estimation

来源：评论

学校读者我要写书评

暂无评论

New design and advanced processing for frac jobs monitoring

New design and advanced processing for frac jobs monitoring

引用

4th EAGE Passive Seismic workshop

作者： Rebel-Schissele, E. Pandolfi, D. Chambefort, M. Bardainne, T. CGGVeritas Services SA United States

the main goal of frac monitoring is to obtain a clear definition of event characterization to ultimately compute SRV. Enhancement in signal-to-noise ratio is one of the key elements used to discriminate a successful technique from others. While in the buried sensors design the noise reduction is a wellaccepted advantage, the simple layout of surface sensors arrayis still under discussion. this abstract presents results obtained with a new surface design used in hydraulic fracturation monitoring showing how geometry and spatial distribution of the sensors can improve SNR and therefore sensitivity. this new design is named'patch design'.the name is self-explanatory: OnePatch consists in a given number of sensors closely distributed;a patch design is a series of patches sparsely distributed above the region of interest. this design has several advantages;we will discuss here the economic and technical benefits of this method. sensor deployment can be easily adapted to the environment optimizing permitting, line clearing, access and avoiding noise prone areas. the economic advantage does not weaken the technical benefit: At the patch scale, the short distance between sensors allowsadvanced summation to optimallypreserve the signal and reduce the noise. the patch design provides a much higher signal-tonoise ratio compared to the usual surface designs. Real cases examples will show how the patch design combines the advantages of both surface and shallow buried array designs.

关键词： signal to noise ratio

来源：评论

学校读者我要写书评

暂无评论

On the uniform asymptotic convergence of a distributed particle filter

On the uniform asymptotic convergence of a distributed parti...

引用

sensor array and multichannel signal processing workshop

作者： Joaquín Míguez Department of Signal Theory & Communications Universidad Carlos III de Madrid. Leganés Madrid Spain

Distributed signal processing algorithms suitable for their implementation over wireless sensor networks (WSNs) and ad hoc networks with communications and computing capabilities have become a hot topic during the past years. One class of algorithms that have received special attention are particles filters. However, most distributed versions of this type of methods involve various heuristic or simplifying approximations and, as a consequence, classical convergence theorems for standard particle filters do not hold for their distributed counterparts. In this paper, we look into a distributed particle filter scheme that has been proposed for implementation in both parallel computing systems and WSNs, and prove that, under certain stability assumptions regarding the physical system of interest, its asymptotic convergence is guaranteed. Moreover, we show that convergence is attained uniformly over time. this means that approximation errors can be kept bounded for an arbitrarily long period of time without having to progressively increase the computational effort.

关键词： Convergence signal processing algorithms Approximation methods Wireless sensor networks signal processing Approximation algorithms Monte Carlo methods

来源：评论

学校读者我要写书评

暂无评论

ROBUST ADAPTIVE VECTOR sensor processing IN thE PRESENCE OF MISMATCH AND FINITE SAMPLE SUPPORT

ROBUST ADAPTIVE VECTOR SENSOR PROCESSING IN THE PRESENCE OF ...

引用

2008 ieee sensor array and multichannel signal processing workshop

作者： Andrew J. Poulsen Raj Rao Nadakuditi Arthur B. Baggeroer Massachusetts Institute of Technology Cambridge MA USA

We present analytical results which quantify the effect of system mismatch and finite sample support on acoustic vector sensor array performance. One noteworthy result is that the vector aspect of the array "dampens" the effect of array mismatch, enabling deeper true nulls. this is accomplished because the variance of the vector sensor array spatial response (due to rotational, positional and filter gain/phase perturbations) decreases in the sidelobes, unlike arrays of omnidirectional hydrophones. When sensor orientation is measured within a reasonable tolerance, the beampattern variance dominates the average sidelobe power response. Our analysis also suggests that vector sensor array gain performance is less sensitive to rotational than to positional perturbations in the regions of interest. We analytically characterize the eigen-SNR threshold, which depends on the signal and noise covariance and the number of noise-only and signal-plus-noise snapshots, below which (asymptotically speaking) reliable detection using sample eigenvalue based techniques is not possible. thus for a given number of snapshots, since the dimensionality of the snapshot in a vector sensor array is larger than that of a hydrophone-only array, the eigen-SNR detection threshold will be greater whenever the eigenvector information is discarded. We present processing techniques customized to the unique characteristics of vector sensors, which exploit information encoded in the sample eigenvectors and are robust to the mismatch and finite sample support issues. these methods include adaptive processing techniques with multiple white noise constraints.

关键词： arrays Gain Noise Sonar equipment White noise Robustness Acoustics

来源：评论

学校读者我要写书评

暂无评论

Optimizing the performance of the partial adaptive concentric ring array in the presence of prior knowledge

Optimizing the performance of the partial adaptive concentri...

引用

sensor array and multichannel signal processing workshop

作者： L. M. Vicente K. C. Ho Department of Electrical and Computer Engineering University of Missouri Columbia Columbia MO USA

the partial adaptive concentric ring array (CRA) has been successfully applied to 3D beamforming because of its flexibility, faster tracking ability and reduced computation with respect to the fully adaptive CRA. In some cases, prior knowledge regarding some interferences is available so that better beamformers can be designed. the previous method that exploits prior knowledge by using a fixed penalty factor could not guarantee in maintaining a low residual interference and noise level. We propose in this paper an adaptive beamformer that automatically seeks out the optimum penalty factor to achieve the best performance. the proposed beamformer outperforms the previous design in maintaining a higher output signal to interference and noise ratio, even after the characteristics of the interferences have changed. the performance of the proposed beamformer is evaluated through simulations.

关键词： arrays Interference signal to noise ratio Steady-state array signal processing Power generation Correlation

来源：评论

学校读者我要写书评

暂无评论

没有更多数据了...

全选清除本页清除全部题录导出标记到“检索档案”

共94页 << < 54 55 56 57 58 59 60 61 62 63 > >>

检索报告对象比较合并检索0

隐藏清空

合并搜索

回到顶部

执行限定条件

内容：

评分：

请选择保存的检索档案：

请选择收藏分类：

订阅名称：

通借通还

温馨提示：

图书名称：

借书校区：

取书校区：

手机号码：

邮箱地址：

一卡通帐号：

电话和邮箱必须正确填写，我们会与您联系确认。

联系人：

所在院系：

联系邮箱：

联系电话：

内蒙古自治区呼和浩特市赛罕区大学西街235号邮编: 010021

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：