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

382 篇 会议
8 篇 期刊文献

馆藏范围

390 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

305 篇 工学
- 154 篇 电气工程
- 136 篇 计算机科学与技术...
- 92 篇 软件工程
- 85 篇 信息与通信工程
- 45 篇 测绘科学与技术
- 17 篇 电子科学与技术（可...
- 17 篇 控制科学与工程
- 15 篇 仪器科学与技术
- 12 篇 机械工程
- 12 篇 光学工程
- 7 篇 化学工程与技术
- 7 篇 核科学与技术
- 7 篇 生物医学工程（可授...
- 6 篇 航空宇航科学与技...
- 4 篇 土木工程
- 4 篇 安全科学与工程
- 3 篇 材料科学与工程（可...
- 3 篇 水利工程
- 3 篇 交通运输工程
122 篇 理学
- 86 篇 物理学
- 22 篇 数学
- 10 篇 系统科学
- 8 篇 化学
- 7 篇 统计学（可授理学、...
- 4 篇 地球物理学
- 4 篇 生物学
108 篇 医学
- 105 篇 临床医学
- 10 篇 特种医学
10 篇 管理学
- 5 篇 管理科学与工程(可...
- 5 篇 图书情报与档案管...
2 篇 法学
1 篇 经济学
1 篇 农学

主题

34 篇 target tracking
29 篇 signal to noise ...
23 篇 target detection
23 篇 sensors
22 篇 signal processin...
21 篇 data association
20 篇 radar
19 篇 detection and tr...
18 篇 data fusion
17 篇 object detection
16 篇 signal processin...
14 篇 multiple target ...
12 篇 filtering (signa...
11 篇 bayesian methods
11 篇 estimation
11 篇 particle filters
10 篇 real-time system...
10 篇 feature extracti...
9 篇 radar signal pro...
9 篇 adaptation model...

机构

8 篇 cyberrnd inc cul...
7 篇 univ calif san d...
7 篇 univ connecticut...
4 篇 univ connecticut...
3 篇 qinetiq ltd malv...
3 篇 tek associates l...
3 篇 mcmaster univ de...
3 篇 numerica corp ft...
3 篇 numerica corp lo...
3 篇 usn ctr surface ...
3 篇 univ connecticut...
2 篇 lockheed martin ...
2 篇 nanjing research...
2 篇 ecole polytech f...
2 篇 xi'an technologi...
2 篇 macao polytechni...
2 篇 cub def applicat...
2 篇 univ melbourne d...
2 篇 thales nederland...
2 篇 univ connecticut...

作者

12 篇 kirubarajan t
11 篇 bar-shalom y
8 篇 kirubarajan t.
6 篇 blair wd
6 篇 bar-shalom yaako...
6 篇 sinha a
5 篇 drummond oliver ...
4 篇 sworder dd
4 篇 maskell s
4 篇 willett peter
4 篇 drummond oe
4 篇 danford scott
4 篇 boyd je
4 篇 willett p
3 篇 blair w. dale
3 篇 kerr th
3 篇 gray je
3 篇 kragel bret d.
3 篇 sinha a.
3 篇 hernandez ml

语言

385 篇 英文
2 篇 土耳其文
2 篇 中文
1 篇 其他

检索条件"任意字段=18th Conference on Signal and Data Processing of Small Targets"

共 390 条记录，以下是321-330 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：

High-resolution radar ranging for multiple targets

High-resolution radar ranging for multiple targets

引用

14th conference on signal and data processing of small targets

作者： Wang, Z Willett, P Bar-Shalom, Y Blair, WD Univ Connecticut Storrs CT 06269 USA

ISBN: (纸本)0819444782

the similarity between the multiple-target radar ranging problem and the multi-user detection problem in CDMA is drawn: in CDMA, users' bits modulate distinct but correlated signature signals;while, in radar, the "bits" are range-bin occupancies and the "signatures" correspond to the known transmitted signal translated to be centered on the appropriate range bin. the analogy is useful: there has been a great deal of recent experience in CDMA, and one of the best and fastest algorithms uses a variant of probabilistic data association (PDA, the target-tracking philosopk). PDA can be augmented by group decision feedback (GDF) - another idea from CDMA - to refine the target delay- estimates;and finally minimum description length (MDL) is applied to estimate the munber of targets. Simulation examples are given to illustrate the resolution of closely-spaced targets within what would normally- be thought the same range bin. Its performance is also compared with the Cramer-Rao lower bound (CRLB) and the alternating projection (AP) algorithm.

关键词： Personal digital assistants Radar Detection and tracking algorithms Target detection Expectation maximization algorithms signal detection signal to noise ratio Ranging Correlation function Modulation

来源：评论

学校读者我要写书评

暂无评论

Maximum likelihood angle extractor in the presence of sea-surface multipath

Maximum likelihood angle extractor in the presence of sea-su...

引用

14th conference on signal and data processing of small targets

作者： Sinha, A Blair, WD Kirubarajan, T Bar-Shalom, Y Univ Connecticut Dept Elect & Comp Engn Storrs CT 06268 USA

ISBN: (纸本)0819444782

In the presence of sea-surface multipath monopulse radar signals from a low elevation target have three alternative paths in addition to the direct (radar-to-target) path due to reflections from the sea surface. the specular reflection causes significant signal fading. the diffuse reflection causes an approximately constant bias to the in-phase component of the monopulse ratio, which is the standard extractor of the direction of arrival (DOA) in the monopulse processing. the diffuse reflection also causes higher standard deviation to the in-phase component of the monopulse ratio. In this paper we propose a maximum likelihood (ML) angle extraction technique for low elevation targets of known average signal strength having a Rayleigh fluctuation. the results show that this method reduces the error of the estimated angle compared to the conventional monopulse ratio estimator. Subsequently, the ML angle extractor is modified for the unknown average signal strength case. this modified angle extractor has only a small performance degradation compared with the known average signal strength case, but it performs much better than the monopulse ratio based estimator. this angle extractor reduces the root mean square error (RMSE) by more than 50% in the signal processing stage when used in a low flying target (sea skimmer) tracking scenario.

关键词： Radar Reflection signal to noise ratio Specular reflections Error analysis signal processing Detection and tracking algorithms Silicon Analytical research Computer engineering

来源：评论

学校读者我要写书评

暂无评论

Hybrid tracking algorithm using MHT and PMHT

Hybrid tracking algorithm using MHT and PMHT

引用

14th conference on signal and data processing of small targets

作者： Dunham, DT Hutchins, RG Independent Contractor (United States) Naval Postgraduate School (United States)

ISBN: (纸本)0819444782

Since the early 1990s, significant research has been done on a relatively new algorithm called the Probabilistic MultiHypothesis Tracker (PMHT). the majority of this research has concluded that there are a few weaknesses with this approach to tracking targets in the presence of clutter. First, the number of targets that are being tracked needs to be known a priori. Second, in order for the algorithm to operate properly, a very good initiation must be performed. Without a very close initiation, the PMHT usually fails to "lock on" to the target correctly. To address both of these issues, a hybrid approach is proposed. this hybrid approach will use a Multi-Hypothesis Tracking (MHT) algorithm to initiate new tracks and to continue tracking them until a track is stable. then it will hand these tracks off to the PMHT to maintain. the MHT is very good at initiating new tracks, and the PMHT is best at maintaining multiple tracks because the algorithm's complexity with tracking additional targets grows linearly as opposed to exponentially'.

关键词： multiple targets hybrid PMHT MHT initialization

来源：评论

学校读者我要写书评

暂无评论

Probability-of-detect-based beam pointing for multitarget tracking with electronically scanned radars

Probability-of-detect-based beam pointing for multitarget tr...

引用

14th conference on signal and data processing of small targets

作者： Register, A Brown, G Blair, WD Georgia Tech Research Institute (United States)

ISBN: (纸本)0819444782

Since the time and energy of phased array radars are under great demand in modem combat systems, methods that conserve those resources are very important. Two opportunities for conserving radar resources that have not been fully exploited when tracking closely-spaced objects with currently deployed systems are revisit time selection (i.e., time to make a measurement) and beam boresight placement. While these two functions are somewhat coupled, this paper addresses only the problem of beam pointing. Previously, a methodology for track management for phased array radars hinged on the concept of organizing tracks into, so called, dwell groups that included closely-spaced targets that could be illuminated with a single beam. Pointing angle for a dwell group was determined using a geometry-based approach. While the geometry-based approach was useful in improving the entire track management function, it was known to be sub-optimal in that the detection characteristics of the targets were not considered. this paper addresses an improved methodology for assigning membership in dwell groups and selecting dwell pointing angles.

关键词： multitarget tracking phased array radar signal processing beam pointing

来源：评论

学校读者我要写书评

暂无评论

the Network Centric Warfare Paradigm: the primacy of estimation, tracking and data fusion algorithms for implementation of this vision

The Network Centric Warfare Paradigm: The primacy of estimat...

引用

14th conference on signal and data processing of small targets

作者： Gray, JE Smith-Carroll, AS McCabe, DH Murray, WJ Alouani, AT USN Ctr Surface Warfare Dahlgren Div Syst Res & Technol Dept Dahlgren VA 22448 USA

ISBN: (纸本)0819444782

What underpins this vision as axiomatic is the mantra "Information is power". Besides the necessary requirement of information exchange networks with sufficient bandwidth and computational power to treat the data being passed around the network;, algorithms are required to make sense of the data. It is estimation algorithms that turn the straw (data) into gold (information). Both proper execution and improvements in estimation algorithms are the enabling technology that facilitates the formation and usage of data across the envisioned warfare networks. We focus on some of the requirements that are driving the formation of these networks from a surface navy perspective in terms of estimation. We also discuss how these requirements focus the design of potentially new algorithms. We also discuss some of the crucial issues that may drive future requirements and algorithms.

关键词： Military operations

来源：评论

学校读者我要写书评

暂无评论

Mysterious computational complexity of particle filters

Mysterious computational complexity of particle filters

引用

14th conference on signal and data processing of small targets

作者： Daum, F Huang, J Raytheon Elect Syst Sudbury MA 01776 USA

ISBN: (纸本)0819444782

Particle filtering (PF) is a relatively new method to solve the nonlinear filtering problem, which is very general and easy to code. the main issue with PF is the large computational complexity. In particular, for typical low dimensional tracking problems, the PF requires 2 to 4 orders of magnitude more computer throughput than the EKF, to achieve the same accuracy. It has been asserted that the PF avoids the curse of dimensionality, but there is no formula or theorem that bounds or approximates the computational complexity of the PF as a function of dimension (d). In this paper, we will derive a simple back-of-the-envelope formula that explains why a carefully designed PF should mitigate the curse of dimensionality for typical tracking problems, but that it does not avoid the curse of dimensionality in general. this new theory is related to the fact that the volume of the d dimensional unit sphere is an amazingly small fraction of the d dimensional unit cube, for large d.

关键词： Error analysis Monte Carlo methods Nonlinear filtering Particles Particle filters Filtering (signal processing) Optical spheres Electronic filtering Probability theory Statistical analysis

来源：评论

学校读者我要写书评

暂无评论

Unresolved target detection - Detailed case study of a particular technique assuming correct calibration

Unresolved target detection - Detailed case study of a parti...

引用

14th conference on signal and data processing of small targets

作者： McCabe, DH Smith-Carroll, AS Gray, JE USN Ctr Surface Warfare Dahlgren Div Syst Res & Technol Dept Dahlgren VA 22448 USA

ISBN: (纸本)0819444782

A particular method of detecting unresolved targets using simulated monopulse radar data is examined in detail. the system is assumed to be correctly calibrated i.e. the decision boundary is calculated based on the true values governing the hypothesis that only a single target is present in the range cell. the system performance is analyzed under varying values for target ranges, angles between the beam pointing direction and the actual off-boresight angle of the targets, waveform power and number of pulses. It is shown that these parameters have a pronounced impact on the Boundary, Metric and Decision Surfaces. the False Alarm probability for a single target as a function of waveform power is considered, as also are the detection probabilities when two targets are present. the important issue of locating the decision point on the Boundary Surface is briefly discussed.

关键词： unresolved targets radar cross-section Neyman Pearson hypothesis testing detection probability

来源：评论

学校读者我要写书评

暂无评论

Expected likelihood for tracking in clutter with particle filters

Expected likelihood for tracking in clutter with particle fi...

引用

14th conference on signal and data processing of small targets

作者： Marrs, A Maskell, S Bar-Shalom, Y QinetiQ Ltd Malvern Technol Ctr Malvern Worcs England

ISBN: (纸本)0819444782

the standard approach to tracking a single target in clutter, using the Kalman filter or extended Kalman filter, is to gate the measurements using the predicted measurement covariance and then to update the predicted state using probabilistic data association. When tracking with a particle filter, an analog to the predicted measurement covariance is not directly available and could only be constructed as an approximation to the current particle cloud. A common alternative is to use a form of soft gating, based upon a Student's-t likelihood, that is motivated by the concept of score functions in classical statistical hypothesis testing. In this paper, we combine the score function and probabilistic data association approaches to develop a new method for tracking in clutter using a particle filter. this is done by deriving an expected likelihood from known measurement and clutter statistics. the performance of this new approach is assessed on a series of bearings-only tracking scenarios with uncertain sensor location and non-Gaussian clutter.

关键词： tracking probabilistic data association particle filters

来源：评论

学校读者我要写书评

暂无评论

An MDL approach for multiple low observable track initiation

An MDL approach for multiple low observable track initiation

引用

14th conference on signal and data processing of small targets

作者： Chen, H Kirubarajan, T Bar-Shalom, Y Pattipati, KR Univ Connecticut Dept Elect & Comp Engn Storrs CT 06269 USA

ISBN: (纸本)0819444782

In this paper the track initiation problem is formulated as multiple composite hypothesis testing using maximum likelihood estimation with probabilistic data association (ML-PDA), an algorithm known to work under very low SNR conditions. this algorithm does not have to make a decision as to which measurement is target originated. the hypothesis testing is based on the minimum description length (MDL) criterion. We first review some well-known approaches for statistical model selection and the advantage of the MDL criterion. then we present an approximate penalty in accounting for the model complexity to simplify the calculation of MDL. Finally, we apply the. MDL approach for the detection and initiation of tracks of incoming tactical ballistic missiles in the exo-atmospheric phase using a surface based electronically scanned array (ESA) radar. the targets are characterized by low SNR, which leads to low detection probability and high false alarm rate. the target acquisition problem is formulated using a batch of radar scans to detect the presence of up to two targets. the ML-PDA estimator is used to initiate the tracks assuming the target trajectories follow a deterministic state propagation. the approximate MDL criterion is used to determine the number of valid tracks in a surveillance region. the detector and estimator are shown to be effective even at 4.4 dB average SNR in a resolution cell (at the end of the signal processing chain).

关键词： track initiation minimum description length maximum likelihood estimator probabilistic data association model selection

来源：评论

学校读者我要写书评

暂无评论

On track and tracklet fusion filtering

On track and tracklet fusion filtering

引用

14th conference on signal and data processing of small targets

作者： Drummond, OE CyberRnD Inc Culvar City CA 90230 USA

ISBN: (纸本)0819444782

Track and tracklet fusion filtering is complicated because the estimation errors of tracks from two sources for the same target may be cross-correlated. this cross-correlation of these errors should be taken into account when designing the filter used to combine the track data. this paper addresses the various track and tracklet fusion methods and their impact on communications load and tracking characteristics. In track and tracklet fusion a sequence of measurements is processed at the sensor or platform level to form tracks;then sensor level track data (in the form of tracks or tracklets) for a target is distributed and fused with each other or with a global track. Track Fusion and Tracklet Fusion are also sometimes called Hierarchical Fusion, Federated Fusion, or Distributed Fusion. Track data can include features or other information useful for target classification. One characteristic of track and tracklet fusion that distinguishes one method from another is whether the local track data is combined or if global tracks are maintained and updated using the sensor track data. Another important issue is whether there is filter process noise to accommodate target maneuvers. Some filtering methods are designed for maneuvering targets and others are not. this paper enumerates the various track and tracklet fusion methods for processing data from distributed sensors and their impact on filter performance and communications load.

关键词： target tracking multiple sensor tracking track fusion multiple target tracking sensor data fusion Bayesian methods tracklet distributed tracking estimation and filtering

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39页 << < 29 30 31 32 33 34 35 36 37 38 > >>

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：