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

392 篇 会议
16 篇 期刊文献
8 册 图书
4 篇 学位论文

馆藏范围

420 篇 电子文献
1 种 纸本馆藏

日期分布

学科分类号

366 篇 工学
- 192 篇 电气工程
- 148 篇 计算机科学与技术...
- 147 篇 信息与通信工程
- 93 篇 软件工程
- 55 篇 电子科学与技术（可...
- 28 篇 仪器科学与技术
- 28 篇 控制科学与工程
- 13 篇 光学工程
- 9 篇 材料科学与工程（可...
- 8 篇 测绘科学与技术
- 4 篇 生物医学工程（可授...
- 3 篇 机械工程
- 3 篇 航空宇航科学与技...
- 2 篇 力学（可授工学、理...
- 2 篇 化学工程与技术
- 1 篇 建筑学
- 1 篇 土木工程
- 1 篇 交通运输工程
- 1 篇 船舶与海洋工程
- 1 篇 生物工程
271 篇 理学
- 178 篇 数学
- 129 篇 物理学
- 46 篇 统计学（可授理学、...
- 2 篇 化学
- 2 篇 生物学
- 2 篇 系统科学
- 1 篇 地球物理学
60 篇 医学
- 59 篇 临床医学
- 3 篇 基础医学(可授医学...
3 篇 管理学
- 3 篇 管理科学与工程(可...

主题

171 篇 signal processin...
42 篇 time-frequency a...
36 篇 fourier transfor...
35 篇 signal to noise ...
34 篇 digital signal p...
31 篇 image processing
28 篇 interference (co...
26 篇 sensors
25 篇 signal detection
23 篇 algorithm develo...
22 篇 matrices
21 篇 statistical anal...
20 篇 array processing
18 篇 signal analyzers
16 篇 radar
16 篇 electronic filte...
15 篇 data modeling
14 篇 frequency modula...
14 篇 very large scale...
14 篇 digital filterin...

机构

7 篇 cuny ny 10021 us...
7 篇 univ. of califor...
5 篇 us dept def ft g...
5 篇 queensland univ....
5 篇 mcmaster univ.
4 篇 univ. of souther...
4 篇 univ windsor vls...
4 篇 univ pittsburgh ...
4 篇 univ of michigan...
4 篇 michigan state u...
3 篇 villanova univ c...
3 篇 iowa state univ.
3 篇 univ. of minneso...
3 篇 univ calif los a...
3 篇 rutgers univ.
3 篇 univ. of michiga...
3 篇 drexel univ dept...
2 篇 the pennsylvania...
2 篇 univ. of illinoi...
2 篇 univ of washingt...

作者

13 篇 cohen l
7 篇 williams wj
7 篇 yao k
6 篇 franklin t luk
5 篇 williams william...
5 篇 nelson dj
5 篇 amin mg
5 篇 chau pm
5 篇 cohen leon
5 篇 boashash b
5 篇 parhi kk
5 篇 jullien ga
4 篇 amin moeness g.
4 篇 lorenzelli f
4 篇 luk franklin t.
4 篇 loughlin p
4 篇 qiao sz
3 篇 white langford b...
3 篇 shroff gautam m.
3 篇 nickel robert m.

语言

416 篇 英文
3 篇 其他
1 篇 中文

检索条件"任意字段=Advanced Signal Processing Algorithms, Architectures, and Implementations XVI"

共 420 条记录，以下是371-380 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：

Improved jammer localization using multiple focussing

Improved jammer localization using multiple focussing

引用

advanced signal-processing algorithms, architectures, and implementations

作者： Velez, Edgar F. Amin, Moeness G. Villanova Univ Villanova United States

Focussing techniques have proven efficient in direction-of-arrival estimation of broadband signals. However, when used alone at high frequency operation, these techniques cannot accurately locate the sources, due to the numerous spurious peaks in the spectrum. Since the spurious peaks depend on the array manifold, their location varies from one focussing frequency to another. Improved jammer localization can, therefore, be achieved by focussing at different frequencies and then averaging the corresponding MUSIC spectra. The averaging smooths out the undesired peaks while boosting the common spectral peaks, allowing correct detection and location of the waveforms impinging on the array.

关键词： signal processing

来源：评论

学校读者我要写书评

暂无评论

Matrix triangularization by fixed-point redundant CORDIC with constant scale factor

Matrix triangularization by fixed-point redundant CORDIC wit...

引用

advanced signal-processing algorithms, architectures, and implementations

作者： Lee, Jeong-A Lang, Tomas Univ of California Los Angeles United States

We develop redundant CORDIC scheme where the scale factor is forced to be constant while computing angles for 2 × 1 plane rotations. Based on the scheme, we present a fixed-point implementation of matrix triangularization by Luk's parallel algorithm, with the following additional features: (1) the final scaling operation is done by shifting, (2) the number of iterations in CORDIC rotation unit is reduced by about 25% by expressing the direction of the rotation in radix-2 and radix-4, and (3) the conventional number representation of rotated output is obtained on-the-fly, not from a carry-propagate adder. The number of hardware modules and the speed are evaluated and compared with the previous CORDIC schemes.

关键词： signal processing

来源：评论

学校读者我要写书评

暂无评论

Spatial evolutionary spectrum for DOA estimation and blind signal separation

Spatial evolutionary spectrum for DOA estimation and blind s...

引用

Proceedings of the 1999 advanced signal processing algorithms, architectures, and implementations IX

作者： Kayhan, A. Salim Amin, Moeness G. Hacettepe Univ Ankara Turkey Villanova Univ United States

In this paper, we use the concept of evolutionary spectrum to solve key problems in array processing. We present Cross-power Evolutionary Periodogram for direction finding and blind separation of nonstationary signals. We model nonstationary signals received by each sensor in the array as a sum of complex sinusoids with time-varying amplitudes. These amplitudes carry information about the direction of arrival which may also be time-varying. We first estimate the time-varying amplitudes, then use the results for the estimation of evolutionary cross-power distributions of the sensor data. Next, using cross-power estimates at time-frequency samples of interest, we estimate the directions of arrival using one of the existing high resolution direction finding methods. If the directions are time-varying, we select time-frequency points around the time of interest. By carrying out the estimation at different times, we obtain the directions as a function of time. If the sources are stationary, then we can use all time-frequency points of interest for the estimation of fixed directions. We also use whitening and subspace methods to find the mixing matrix and separate the signals received by the array. Simulation examples illustrating the performances of the proposed algorithms are presented.

关键词： Parallel processing systems

来源：评论

学校读者我要写书评

暂无评论

Compilation time analysis to minimize run-time overhead in preemptive scheduling on multiprocessors

Compilation time analysis to minimize run-time overhead in p...

引用

advanced signal processing: algorithms, architectures, and implementations V

作者： Wauters, Piet Lauwereins, Rudy Peperstraete, J. Katholieke Univ. Leuven Heverlee Belg

ISBN: (纸本)0819416207

This paper describes a scheduling method for hard real-time Digital signal processing (DSP) applications, implemented on a multi-processor. Due to the very high operating frequencies of DSP applications (typically hundreds of kHz) runtime overhead should be kept as small as possible. Because static scheduling introduces very little run-time overhead it is used as much as possible. Dynamic pre-emption of tasks is allowed if and only if it leads to better performance in spite of the extra run-time overhead. We essentially combine static scheduling with dynamic pre-emption using static priorities. Since we are dealing with hard real-time applications we must be able to guarantee at compile-time that all timing requirements will be satisfied at run-time. We will show that our method performs at least as good as any static scheduling method. It also reduces the total amount of dynamic pre-emptions compared with run time methods like deadline monotonic scheduling.

关键词： Digital signal processing

来源：评论

学校读者我要写书评

暂无评论

Cumulant slices for two-dimensional autoregressive signal modeling

Cumulant slices for two-dimensional autoregressive signal mo...

引用

advanced signal processing: algorithms, architectures, and implementations V

作者： Stathaki, P.T. Constantinides, Anthony G. Imperial Coll. London UK

ISBN: (纸本)0819416207

The research work reported in this paper is concerned with the use of higher order spectral estimation techniques as a means to deriving the parameters of 2D autoregressive (AR) models. Image analysis is examined from a higher order statistical perspective and in the context of noise. The objective is to develop analysis techniques through which robust autoregressive parameter estimation is accomplished. The approach taken involves the use of 2D AR models derive from third order cumulants. The directionality of the cumulant space influences the AR parameter estimation in a decisive manner. The specific application of the developed methods is in mammography, an area in which it is very difficult to discern the appropriate features. The results show significant discriminating gains through such techniques.

关键词： Image analysis

来源：评论

学校读者我要写书评

暂无评论

Performance of a parallel bispectrum estimation code

Performance of a parallel bispectrum estimation code

引用

advanced signal processing algorithms, architectures, and implementations II

作者： Carmona, Edward A. Matson, Charles L. U.S. Air Force/Phillips Lab. Kirtland AFB NM USA

ISBN: (纸本)0819406945

We compare the performance of three parallel supercomputers executing a bispectrum estimation code used to remove distortions from astronomical data. We discuss the issues in parallelizing the code on an 8-processor shared-memory CRAY Y-MP and a 1024-processor distributed-memory nCUBE machine. Results show that elapsed times on the nCUBE machine are comparable to those on the CRAY Y-MP. Execution of the nCUBE was more than 40 times faster than that of a single processor CRAY-2 resulting in more than 50 times better cost performance. Cost performance on the nCUBE is more than 25 times better than an 8- processor CRAY Y-MP.

关键词： Data processing

来源：评论

学校读者我要写书评

暂无评论

algorithms for instantaneous frequency estimation: a comparative study

Algorithms for instantaneous frequency estimation: a compara...

引用

advanced signal-processing algorithms, architectures, and implementations

作者： Boashash, Boualem O'Shea, Peter Arnold, Morgan J. Univ of Queensland Australia

This paper examines the problem of instantaneous frequency (IF) estimation for Frequency Modulated (FM) signals imbedded in white Gaussian noise. It reviews currently available techniques, and in addition, proposes some new ones, based on a modelling of the signal phase as a polynomial. Both linear least-squares techniques and Maximum Likelihood (ML) techniques are investigated for estimating the polynomial coefficients. It is seen that the linear least squares approach is efficient (i.e. unbiased and meets the Cramer-Rao bounds) for high SNR, while the ML scheme is efficient for a much larger range of SNR. Theoretical lower variance bounds are given for estimating the polynomial coefficients and are compared with the results of simulations. Guidelines are given as to which estimation method should be used for a given signal class and signal to Noise Ratio (SNR) level.

关键词： signal processing

来源：评论

学校读者我要写书评

暂无评论

Superresolution imaging: a survey of current techniques

Superresolution imaging: a survey of current techniques

引用

Conference on advanced signal processing algorithms, architectures, and Implementantions xviII

作者： Cristobal, G. Gil, E. Sroubek, F. Flusser, J. Miravet, C. Rodriguez, F. B. CSIC Inst Opt Serrano 121 E-28006 Madrid Spain ASCR Inst Informat Theory & Automat Prague Czech Republic Univ Autonoma Madrid Escuela Politecn Super Madrid Spain

ISBN: (纸本)9780819472946

Imaging plays a key role in many diverse areas of application, such as astronomy, remote sensing, microscopy, and tomography. Owing to imperfections of measuring devices (e.g., optical degradations, limited size of sensors) and instability of the observed scene (e.g., object motion, media turbulence), acquired images can be indistinct, noisy, and may, exhibit insufficient spatial and temporal resolution. In particular, several external effects blur images. Techniques for recovering the original image include blind deconvolution (to remove blur) and superresolution (SR). The stability of these methods depends on having more than one image of the same frame. Differences between images are necessary to provide new information, but they can be almost unperceivable. State-of-the-art SR techniques achieve remarkable results in resolution enhancement by estimating the subpixel shifts between images, but they lack any apparatus for calculating the blurs. In this paper, after introducing a review of current SR, techniques we describe two recently developed SR methods by the authors. First, we introduce a variational method that minimizes a regularized energy function with respect to the high resolution image and blurs. In this way we establish a unifying way to simultaneously estimate the blurs and the high resolution image. By estimating blurs we automatically estimate shifts with subpixel accuracy, which is inherent for good SR performance. Second, an innovative learning-based algorithm using a neural architecture for SR is described. Comparative experiments on real data illustrate the robustness and utilization of both methods.

关键词： superresolution deconvolution energy minimization probabilistic neural network sequence processing

来源：评论

学校读者我要写书评

暂无评论

Generalized parametric estimator for multiple wide-band signals

Generalized parametric estimator for multiple wide-band sign...

引用

advanced signal-processing algorithms, architectures, and implementations

作者： Wu, Q. Reilly, J.P. Wong, K.M. McMaster Univ Hamilton Canada

This paper presents a generalized parametric estimator for the directions of arrival (DOA) of wide-band signals. This estimator is derived by extenting the geometrical explanation of the ML estimator of narrow-band signals to the focussed correlation matrix. The consistency of the estimator for estimating DOA has been proved. This estimator can be considered as a coherent signal processing method by which the computation complexity can be reduced approximately by the number of the frequency bins. We have also shown that under certain condition the proposed estimator is equivalent to the ML estimator derived by applying the likelihood principle on the Fourier coefficients of each frequency bin. Such an equivalence implies that the MLE has some inherent advantages from the perspective of improving performance and that the focussing techniques are not necessary for the ML estimator.

关键词： signal processing

来源：评论

学校读者我要写书评

暂无评论

Truncated sampling for the Fourier-Mellin transform with applications to wide-band WVD computation

Truncated sampling for the Fourier-Mellin transform with app...

引用

advanced signal-processing algorithms, architectures, and implementations

作者： Allen, Jeffrey C. Naval Ocean Systems Cent San Diego United States

The Fourier-Mellin transform (FMT) of an input function is defined as and is the magnitude squared of the Mellin transform of the magnitude squared of the Fourier transform of the input function. As such, the FMT is unchanged by translations and dilations of the input function. While the FMT has found applications in optical pattern recognition, ship classification by sonar and radar, and image processing, only cursory attention has been paid to the truncation error incurred by using a finite number of samples of the input function. This paper establishes truncation bounds for computing the FMT for band-limited functions from a finite number of samples of the input function. These bounds naturally suggest an implementation of the FMT by the method of direct expansions. This approach readily generalizes to a direct expansion for the Wigner-Ville distribution and the Q distribution.

关键词： signal processing

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42页 << < 33 34 35 36 37 38 39 40 41 42 > >>

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：