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国外信息融合技术概述 总被引:1,自引:0,他引:1
随着传感器技术的不断发展和战争的需求,多传感器得以大量使用。使用多传感器将导致信息量大增。人工综合处理这些信息的方式已不适应现代战争的要求,只能采用自动综合与处理的方式,这就是本文所指的信息融合。本文主要介绍信息融合的应用范围,主要研究内容,信息处理技术、信息融合方法和信息融合系统结构。 相似文献
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场景分类中使用了许多种类的图像特征,但通常情况下,一种特征很难对许多不同场景都得到不错的分类结果,故而对特征融合方面做了很多研究工作.但特征融合的方法存在一个问题,即一般维数会很高,这个高维的特征向量可能包含冗余信息和噪声,从而降低最终的分类准确率.因此提出了使用PCA对融合的特征进行降维以去除冗余信息和噪声,经实验验证,该方法提高了分类的准确率. 相似文献
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高速公路隧道监控系统存在传感器单一、可靠性低等问题,如果能对失效传感器数据预测,可提高隧道安全性。利用BP和RBF神经网络的非线性逼近能力融合提取隧道CO浓度信息特征,再用最优均方误差加权融合算法对两种网络分别提取的信息再次融合预测隧道CO浓度。提高了模型预测精度,进而给出数据预处理方法和模型评价指标。仿真实验表明:该模型对隧道CO浓度预测的有效性,性能优于单一神经网络融合预测模型。 相似文献
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将变电设备集中监控业务与电网调度业务融合,完成调控融合,是深化"大运行"体系建设的必然选择.为做好地区电网调控融合工作,本文提出了一系列措施,大力推进调控融合落地实施,并提出必要的预控措施,降低融合过程中存在的风险,确保调控融合的安全平稳过渡. 相似文献
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随着科学技术的迅猛发展,信息采集与融合趋于多元化和复杂化.单一的传感器已经无法满足需求.因此,多传感器信息融合技术开始广泛应用于各行各业,并提高了信息处理的准确性和完整性.从概念、结构与分类、关键算法的研究和实际应用等方面对多传感器信息融合技术进行了介绍,并总结了该技术的发展趋势与未来前景. 相似文献
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多传感器信息融合是实现无人驾驶的核心技术,多个传感器之间协同收集车辆周围环境的数据信息,经过多传感器融合结构的转换和处理,使用融合算法进行联合分析,能够使车辆全面地感知驾驶环境,帮助车辆完成自主导航、变道、控制速度等智能决策。基于多传感器信息融合的基本定义,从功能模型和结构模型介绍多传感器信息融合的基本形式;重点梳理多传感器信息融合的算法,分为随机类和人工智能类两个大类,详细分析各方法的原理及特点;最后总结出多传感器信息融合策略在实际应用时的主要步骤,同时分析其在无人驾驶场景中的应用,为多传感器信息融合未来理论研究方向和应用实践方向提供参考,从而完成多传感器信息融合的综合分析。 相似文献
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为了提高引信的准确性,结合当前微型毫米波雷达、激光传感器、微机电系统( MEMS)传感器对目标的探测能力,提出了一种引信多模融合策略。以传感器受环境影响的主要因素为输入,构建环境影响贝叶斯网络,形成传感器可靠性权重分配;通过建立传感器量测加权融合,形成测距与加速度两级融合综合处理获得目标准确位置信息,从而提高量测可靠性,为准确引爆提供支撑。实验表明该算法可提高测距准确性且对不同环境具有较好的适应性。 相似文献
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Li X.R. Yunmin Zhu Jie Wang Chongzhao Han 《IEEE transactions on information theory / Professional Technical Group on Information Theory》2003,49(9):2192-2208
This paper deals with data (or information) fusion for the purpose of estimation. Three estimation fusion architectures are considered: centralized, distributed, and hybrid. A unified linear model and a general framework for these three architectures are established. Optimal fusion rules based on the best linear unbiased estimation (BLUE), the weighted least squares (WLS), and their generalized versions are presented for cases with complete, incomplete, or no prior information. These rules are more general and flexible, and have wider applicability than previous results. For example, they are in a unified form that is optimal for all of the three fusion architectures with arbitrary correlation of local estimates or observation errors across sensors or across time. They are also in explicit forms convenient for implementation. The optimal fusion rules presented are not limited to linear data models. Illustrative numerical results are provided to verify the fusion rules and demonstrate how these fusion rules can be used in cases with complete, incomplete, or no prior information. 相似文献
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《Spectrum, IEEE》1994,31(2):31-36
The last decade has seen advances in the shaping and confinement of plasmas, and in approaches to noninductive current drive. Here, the author presents an overview of nuclear fusion advances between 1983-93 examining: fusion milestones; plasma shaping; bootstrap current; tokamaks; noninductive heating; current drives; ITER; and impurities control 相似文献
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Multisensor data fusion 总被引:5,自引:0,他引:5
Multisensor data fusion refers to the acquisition, processing and synergistic combination of information gathered by various knowledge sources and sensors to provide a better understanding of a phenomenon. It is a fascinating and rapidly evolving field that has generated a lot of excitement in the research and development community. These concepts are being applied to a wide variety of fields such as military command and control, robotics, image processing, air traffic control, medical diagnostics, pattern recognition and environmental monitoring. This paper presents a brief overview of the field and illustrates its potential by means of two examples 相似文献
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高校招生录取数据是高校工作重要原始资料。利用信息融合概念、VF软件技术、Excel软件技术设计高校招生录取数据融合系统,可以帮助招生工作人员减少录取考生信息统计工作量,提高统计分析速度和准确度,及时统计分析录取数据,为领导决策以及高校各部门相关工作提供可靠数据信息,为提高招生工作信息化水平做出了较好的尝试。 相似文献
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Yingjie Zhang 《Signal, Image and Video Processing》2007,1(3):215-223
A new adaptive region-based image fusion approach is proposed. To implement image segmentation, the piecewise smooth Mumford-Shah
segmentation algorithm is studied and a fast and simple method is proposed to solve the energy function. Two complementary
functions u
+ and u
− of the algorithm, which are respectively looked as objects and background of the image, are extended into the whole image
domain, and they are computed by linear or nonlinear diffusion. The key to the algorithm is to make optimal fusion decisions
for every segmented region. For this purpose, an evaluation approach has to be given to measure the performances of the available
fusion rules. Therefore an energy-based evaluation model, derived from the Total Variation principle, is proposed. By numerical
experiment it has been demonstrated that despite an increase in complexity, the new approach has shown a number of advantages
over previous ones, for example the ability to preserve all relevant information and remove some of side effects such as reducing
contrast and sensitive to error of registration. 相似文献
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To deal with the problem of restoring degraded images with non-Gaussian noise, this paper proposes a novel cooperative neural fusion regularization (CNFR) algorithm for image restoration. Compared with conventional regularization algorithms for image restoration, the proposed CNFR algorithm can relax need of the optimal regularization parameter to be estimated. Furthermore, to enhance the quality of restored images, this paper presents a cooperative neural fusion (CNF) algorithm for image fusion. Compared with existing signal-level image fusion algorithms, the proposed CNF algorithm can greatly reduce the loss of contrast information under blind Gaussian noise environments. The performance analysis shows that the proposed two neural fusion algorithms can converge globally to the robust and optimal image estimate. Simulation results confirm that in different noise environments, the proposed two neural fusion algorithms can obtain a better image estimate than several well known image restoration and image fusion methods. 相似文献