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

954 篇 会议
22 篇 期刊文献

馆藏范围

976 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

750 篇 工学
- 398 篇 电气工程
- 223 篇 信息与通信工程
- 206 篇 计算机科学与技术...
- 128 篇 软件工程
- 100 篇 航空宇航科学与技...
- 98 篇 测绘科学与技术
- 56 篇 电子科学与技术（可...
- 51 篇 仪器科学与技术
- 43 篇 控制科学与工程
- 25 篇 光学工程
- 22 篇 生物医学工程（可授...
- 18 篇 机械工程
- 12 篇 建筑学
- 9 篇 土木工程
- 9 篇 化学工程与技术
- 9 篇 生物工程
- 7 篇 水利工程
- 7 篇 环境科学与工程（可...
- 7 篇 安全科学与工程
432 篇 理学
- 348 篇 物理学
- 51 篇 数学
- 15 篇 系统科学
- 15 篇 统计学（可授理学、...
- 14 篇 生物学
- 13 篇 化学
- 13 篇 海洋科学
- 8 篇 地球物理学
120 篇 医学
- 117 篇 临床医学
30 篇 管理学
- 17 篇 管理科学与工程(可...
- 11 篇 图书情报与档案管...
6 篇 军事学
3 篇 经济学
2 篇 法学
1 篇 教育学
1 篇 文学
1 篇 农学

主题

99 篇 signal processin...
82 篇 sensors
79 篇 target tracking
75 篇 target detection
69 篇 signal to noise ...
64 篇 radar
60 篇 detection and tr...
50 篇 object detection
46 篇 filtering (signa...
44 篇 signal processin...
42 篇 data association
38 篇 data fusion
36 篇 feature extracti...
36 篇 radar signal pro...
33 篇 electronic filte...
31 篇 error analysis
30 篇 clutter
29 篇 radar detection
27 篇 signal detection
26 篇 data processing

机构

19 篇 univ connecticut...
10 篇 cyberrnd inc cul...
7 篇 univ calif san d...
6 篇 numerica corp lo...
6 篇 univ connecticut...
5 篇 key laboratory o...
5 篇 numerica corp lo...
5 篇 national laborat...
4 篇 qinetiq ltd malv...
4 篇 science and tech...
4 篇 nanjing research...
4 篇 school of inform...
4 篇 univ connecticut...
4 篇 raytheon co walt...
4 篇 national key lab...
4 篇 school of scienc...
3 篇 beijing key labo...
3 篇 国防科技大学
3 篇 def res & dev ca...
3 篇 mcmaster univ de...

作者

19 篇 kirubarajan t
18 篇 bar-shalom y
17 篇 bar-shalom yaako...
15 篇 kirubarajan t.
14 篇 willett peter
12 篇 blair wd
9 篇 tharmarasa r.
8 篇 sinha a
7 篇 drummond oe
7 篇 drummond oliver ...
7 篇 willett p
6 篇 huang jim
6 篇 daum fred
5 篇 maskell s
5 篇 romeo kevin
5 篇 barshalom y
5 篇 danford scott
4 篇 pattipati kr
4 篇 paffenroth randy
4 篇 brown gc

语言

953 篇 英文
11 篇 中文
10 篇 其他
2 篇 土耳其文

检索条件"任意字段=Conference on Signal and Data Processing of Small Targets 2010"

共 976 条记录，以下是501-510 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：

Four-Wave Mixing of Strongly Injection-Locked Semiconductor Lasers for All-Optical Frequency Conversion

Four-Wave Mixing of Strongly Injection-Locked Semiconductor ...

引用

conference on Photonic Fiber and Crystal Devices - Advances in Materials and Innovations in Device Applications IV

作者： Hwang, Sheng-Kwang Tsai, Shin-Hung Natl Cheng Kung Univ Dept Electroopt Engn Tainan 70101 Taiwan Natl Cheng Kung Univ Grad Inst Optomechatron Tainan 70101 Taiwan

ISBN: (纸本)9780819482778

Frequency conversion is considered as a key functionality for wavelength division multiplexing systems, which converts an incoming optical carrier of one frequency to an outgoing optical carrier of another frequency while preserving the quality of carried data. The all-optical approach is promising for such a purpose because not only the system complexity and power consumption of frequency converters are greatly reduced but also the flexibility and reconfigurability are highly improved. Four-wave mixing of solitary semiconductor lasers has been proposed to achieve all-optical frequency conversion. Although the conversion efficiency is relatively high, however, the conversion bandwidth is small, limiting the conversion range, and the efficiency flatness is poor, distorting the data signal. In this study, we propose to use four-wave mixing of injection-locked semiconductor lasers instead. When a semiconductor laser is subject to a strong optical injection, it can enter into stable locking dynamics before undergoing Hopf bifurcation. An incoming optical carrier of one frequency perturbs the injection-locked laser, generating an outgoing optical carrier of another frequency through four-wave mixing. Tens to hundreds of gigahertz of frequency conversion can be achieved, increasing the conversion bandwidth by 3 folds. The conversion efficiency varies within 5 dB over the enhanced bandwidth, improving the efficiency flatness by at least 10 dB. Greatly improved eye-diagrams and bit-error ratios are thus obtained. The input power dynamic range of the incoming optical carrier is greatly enhanced, increasing the flexibility of the proposed system.

关键词： Semiconductor laser Injection locking Nonlinear dynamics Four-wave mixing Frequency conversion Optical communications All-optical functionality Optical signal processing

来源：评论

学校读者我要写书评

暂无评论

Analysis of required measurement number in compressive sensing

Analysis of required measurement number in compressive sensi...

引用

IEEE signal processing and Communications Applications (SIU)

作者： Lokman Ayas Ali Cafer Gürbüz Elektrik-Elektronik Mühendisliği Bölümü TOBB Ekonomi ve Teknoloji Üniversitesi Turkey

Compressive sensing is a new signal processing method which shows that a sparse signal can be constructed using fewer measurements than normal reconstruction methods. Rather taking all Nyquist samples of a sparse signal in any base the signal can be reconstructed correctly by taking small number of linear projections. In compressive sensing an important relation between measurement number and signal length and sparsity level is used as M=K(logN). This relation is examined separately in noiseless and noisy data. It is determined by simulations that this relation is valid for sparse enough signals and a new relation has been developed for more general cases.

关键词： Compressed sensing Information theory Noise measurement signal reconstruction signal to noise ratio Loss measurement Approximation methods

来源：评论

学校读者我要写书评

暂无评论

New detection manifolds for radar signal processing

New detection manifolds for radar signal processing

引用

IEEE conference on Aerospace

作者： William C. Ogle J. Scott Goldstein Howard Mendelson SAIC Inc. Chantilly VA USA ManTech International Corporation Chantilly VA USA Trident Systems Inc. Fairfax VA USA

This paper examines direct data domain (DDD) moving target detection for multi-channel space-based radar (SBR). DDD techniques differ from data-adaptive processing methods in that they do not rely on statistically stationary and homogeneous training data in order to estimate and null out clutter or interference and thereby reveal potential targets; instead, they operate on each range-Doppler cell independently, after any necessary preprocessing to compensate for platform motion and/or array calibration. Prior work examined a maximum-likelihood angle-of-arrival (AOA) technique and the associated target power estimator to detect slow moving targets. In this paper, we extend that methodology and propose novel detection manifolds for optimally partitioning the two-dimensional statistical space. The two dimensions are formed by the passive AOA likelihood function and the estimated target power. A computer simulation of a space radar system and associated geometry is used to assess the characteristics and performance of the new concept. We show that the two-dimensional probability densities corresponding to the target absent and target present hypotheses (H0 and H1, respectively) occupy regions in this space that are not optimally separated by independent thresholds. This immediately leads to the novel detection manifolds (or curved boundaries between detections and non-detections) that improve the detection probability while also reducing the false alarm rate.

关键词： Radar detection Radar signal processing Spaceborne radar Object detection Training data Motion estimation Clutter Interference Calibration Maximum likelihood detection

来源：评论

学校读者我要写书评

暂无评论

SEMI-SUPERVISED FISHER LINEAR DISCRIMINANT (SFLD)

SEMI-SUPERVISED FISHER LINEAR DISCRIMINANT (SFLD)

引用

IEEE International conference on Acoustics, Speech, and signal processing

作者： Seda Remus Carlo Tomasi Clarkson University Department of Computer Science PO Box 5815 Potsdam NY 13699-5815 Duke University Department of Computer Science PO Box 90129 Durham NC 27708-0129

ISBN: (纸本)9781424442959

Supervised learning uses a training set of labeled examples to compute a classifier which is a mapping from feature vectors to class labels. The success of a learning algorithm is evaluated by its ability to generalize, i.e., to extend this mapping accurately to new data that is commonly referred to as the test data. Good generalization depends crucially on the quality of the training set. Because collecting labeled data is laborious, training sets are typically small. Furthermore, it is often difficult to represent all possible observation scenarios during training, so that the statistics of the training set end up differing from those of the test data, a problem known as the sample selection bias. To address sample selection bias, we introduce a Semi-Supervised Fisher Linear Discriminant (SFLD) that utilizes additional, unlabeled data to improve generalization for both small and biased training sets. We characterize the conditions under which SFLD helps, and illustrate its benefits through experiments on digit and car recognition applications.

关键词： Sample Selection Bias Generalization Classification Fisher Linear Discriminant Generalization Functional training observational data Selection Bias Semi-supervised Learning Training learning algorithms MAPPING(MATHEMATICAL) Classifiers new data

来源：评论

学校读者我要写书评

暂无评论

Detecting and tracking of small moving target in avian radar images

Detecting and tracking of small moving target in avian radar...

引用

International conference on Image Analysis and signal processing, IASP

作者： Chen Weishi Ning Huansheng Li Jing School of Electronics and Information Engineering Beihang University Beijing China Center of Aviation Safety Technology CAAC Beijing China

A sequence of plane position indicator (PPI) images containing a small moving target is collected using an experimental avian radar surveillance system, which is constructed by modifying a standard marine radar. Smoothing trajectory of a small moving target is separated from the image sequence after background subtraction, clutter suppression, measurements extraction and tracking. The background image is generated by Fast Independent Component Analysis (FastICA). Low segmentation value is set in clutter suppression to improve detecting rate at the cost of introducing a great deal of clutters. Therefore, false alarm rate need to be reduced by tracking. Meanwhile, a modified Hough transform method is applied for track initiation. Monte Carlo data association is proposed for track maintenance and Kalman filtering is adopted for target state prediction and update. Finally, the trajectory is smoothed and then fused with a satellite map for further observation.

关键词： Radar tracking Radar detection Target tracking Radar imaging Spaceborne radar Clutter Trajectory Surveillance Smoothing methods Image sequences

来源：评论

学校读者我要写书评

暂无评论

Power-Aware Distributed Target Detection in Wireless Sensor Networks with UWB-Radar Nodes

Power-Aware Distributed Target Detection in Wireless Sensor ...

引用

IEEE Radar conference

作者： Daniel Bielefeld Rudolf Mathar Ole Hirsch Reiner S. Thoma Institute for Theoretical Information Technology RWTH Aachen University Electronic Measurement Research Lab Ilmenau University of Technology Electronic MeasurementResearch Lab Ilmenau University of Technology

ISBN: (纸本)9781424458110

Distributed detection of targets is one of the major applications of wireless sensor networks. Many existing results on distributed detection are either derived from analytical models or are based on simulations. In this paper, the performance of a distributed target detection system is evaluated by real measurement data obtained by UWB-radar-based sensor nodes. After local processing of the radar signal, the sensor nodes transmit their local decisions about the absence or presence of the target to a fusion center. For this purpose, a power-aware algorithm for resource allocation, which is tailored for UWB communication links is discussed. The feasibility and the effectiveness of this algorithm is evaluated by a hybrid approach based on the measurement data and simulations.

关键词： Distribute Object detection targets Resource utilization Wireless sensor networks Ganglia major application simulating measurement data ANALYSIS MODELS

来源：评论

学校读者我要写书评

暂无评论

A remote data disaster recovery system model based on undo

A remote data disaster recovery system model based on undo

引用

6th International conference on Networked Computing and Advanced Information Management, NCM2010

作者： Guo, Lin Yu, Zhi-Hai Li, Hai-Bo Zhang, Le-Jun Zhang, Jian-Pei College of Computer Science and Technology Harbin Engineering University Harbin 150001 China

ISBN: (纸本)9781424476718

The data disaster recovery system which based on fiber channel or remote data center is so costly. So the system does not appropriate to data security protection of small enterprises. The paper presents a distributed recovery method which based on remote data disaster recovery, and this method has some features including lower cost, deployment flexibility, high security etc. The data of application system is first intercepted by the Undo agent, and after the redundancy processing, finally it is stored in the distributed network storage system. In order to back up the discrete information of system, the Undo-manager sends a time signal to drive snapshoot device and sets restore points, at the same time, the captured data packets are analyzed by the system, according to the syntax and semantic, the system restores the action, system status, data and so on. When the data errors or data missing occurs, Undo-agent will take the whole into account and then drive snapshoot device to restore the checkpoints. The data which occurs after the checkpoint will replay by the verb restore module, in this way, the restoration of both coarse and fine grain and the normal running of recovered system are guaranteed.

关键词： Checkpoint data replay data security Distributed storage system Undoagent

来源：评论

学校读者我要写书评

暂无评论

MULTICHANNEL COMPRESSED SENSING VIA SOURCE SEPARATION FOR HYPERSPECTRAL IMAGES

MULTICHANNEL COMPRESSED SENSING VIA SOURCE SEPARATION FOR HY...

引用

European signal processing conference

作者： Mohammad Golbabaee Simon Arberet Pierre Vandergheynst Signal Processing Institute Ecole Polytechnique Federale de Lausanne (EPFL)

This paper describes a novel framework for compressive sampling of multichannel signals that are highly correlated across the channels. In this work, we assume few number of independent sources are generating the multichannel observations based on a linear mixture model. Moreover, sources are assumed to have sparse/compressible representations in some orthonormal basis. The main contribution of this paper lies in rephrasing the compressed sampling of multichannel data as the compressive source separation problem by knowing the mixture parameters. A number of simulations measure the performance of our recovery algorithm. Comparing to the classical CS scheme -which recovers data of all channels separately- ours indicates a significant reduction in both, the number of measurements to be sent and the complexity of the decoding algorithm (i.e., scaling by the number of sources rather than the number of channels). We demonstrate an application of our scheme in acquisition of the Hyperspectral images. Our algorithm proposes an accurate, low cost and fast recovery from small number of the transmitted measurements that are taken by a low resolution camera.

关键词： Compressed sensing Hyperspectral images Mixture model Source separation Sparsity L_1-minimization

来源：评论

学校读者我要写书评

暂无评论

Design of signal processing system for Fiber Bragg grating current sensor

Design of signal processing system for Fiber Bragg grating c...

引用

9th International conference on Optical Communications and Networks (ICOCN 2010)

作者： Limin Zhao Quankang Wei Danping Jia Beiyong Zeng School of Information Science and Engineering Shenyang University of Technology China

Fiber Bragg grating (FBG) sensor has many advantages such as small size, electric insulation and anti-electromagnetic interference. It has a broad application prospect in high voltage power system and current measurement and now it has become a hot spot. Many researchers are focus on the problem of the demodulation of FBG wavelength. The signal processing system with the core of DSP (TMS320VC5402) and the auxiliary chip of MCU has been designed in this article. The hardware and software of the system are introduced in detail. DSP is responsible for data acquisition and processing, MCU is responsible for controlling the stepping motor of the demodulation circuit so as to demodulate the wavelength signal of FBG well enough. The experimental platform of signal processing system is built. Experimental results indicate that this system can operate stable and accurate.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Wireless network of bipolar body electrodes

Wireless network of bipolar body electrodes

引用

Annual conference on Wireless On Demand Network Systems and Services (WONS)

作者： Roman Trobec Matjaž Depolli Viktor Avbelj Department of Communication Systems Jožef Stefan Institute Ljubljana Slovenia

ISBN: (纸本)9781424460595

A wireless bipolar body electrode has been developed, taking into account the limitations posed by signal-to-noise ratio, dimensions, wireless technology, limited power consumption and requirements for post-processing. A small set of wireless bipolar electrodes, placed at optimal locations on the body surface, are connected into a network that is able to acquire real-time data. Measured signals, sampled with local frequencies of different electrodes, are synchronized to a global clock. Thus, complex post-processing that requires signals aligned in time is enabled. As an interesting example, a standard 12-channel ECG synthesis from a small network of three wireless bipolar electrodes is shown.

关键词： Wireless networks Electrodes signal to noise ratio Energy consumption Frequency measurement Frequency synchronization Clocks Electrocardiography Network synthesis signal synthesis

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98页 << < 47 48 49 50 51 52 53 54 55 56 > >>

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：