This paper deals with the solution to the problem of multisensor data fusion for a single target scenario as detected by an airborne track-while-scan radar. The details of a neural network implementation, various trai...
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This paper deals with the solution to the problem of multisensor data fusion for a single target scenario as detected by an airborne track-while-scan radar. The details of a neural network implementation, various training algorithms based on standard backpropagation, and the results of training and testing the neural network are presented. The promising capabilities of RPROP algorithm for multisensor data fusion for various parameters are shown in comparison to other adaptive techniques.
This paper considers distributed sensor systems and finds redundant configurations which maximize dependability while insuring the system remains within cost or weight constraints. Given different sensor modules which...
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This paper considers distributed sensor systems and finds redundant configurations which maximize dependability while insuring the system remains within cost or weight constraints. Given different sensor modules which fulfil the system's operational requirements but have different dependability and cost parameters, efficient methods are used to find maximum dependability configurations. These methods limit the search to a constrained subspace of the problem space. It is shown that this region must contain the optimal configuration. Three heuristics: genetic algorithms, simulated annealing and tabu search are used. Experimental results are presented with dependability gains of between 10 and 15%. These test cases compare results from all methods and verify that in most cases the simulated annealing heuristic provides the best solutions.
This paper presents the signal processing method of laser images used for detection of small collinear obstacles in helicopter airborne applications. It is very difficult, if not almost impossible, for a regular passi...
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This paper presents the signal processing method of laser images used for detection of small collinear obstacles in helicopter airborne applications. It is very difficult, if not almost impossible, for a regular passive imaging sensor based on CCD detectors to detect such small, remote objects. It was proved in the literature that the fusion of range and intensity data is needed for such a task. The paper presents a new and improved algorithm for real time image processing which enable detection of small tiny objects from sparse data, from a fast moving platform.
This paper presents a typical industrial application of machine vision in order to classify and select different types of cylindrical steel bars in combination with direct process control. The main classification algo...
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ISBN:
(纸本)0819419613
This paper presents a typical industrial application of machine vision in order to classify and select different types of cylindrical steel bars in combination with direct process control. The main classification algorithm consists of a combination of several routines, using different image processing methods. On the one hand a textural approach, using first and second order statistics, is used. Typical histogram data in addition with gray level dependence matrices give some textural classification criteria. On the other hand the search and utilization of geometric criteria supply additional features for classification. Several contour measurement routines deliver a set of additional information about the examined bar. The paper offers details about the used classification algorithms. Furthermore it deals with experimental results such as velocity and rate of selection success.
One of the capabilities of multilayer neural nets that has not received much attention is the ability to efficiently fuse information of different forms for facilitating intelligent decision-making. In this paper we d...
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One of the capabilities of multilayer neural nets that has not received much attention is the ability to efficiently fuse information of different forms for facilitating intelligent decision-making. In this paper we describe the capabilities and functionality of neural network algorithms for data fusion and implementation of nonlinear tracking filters. For a discussion of details and for serving as a vehicle for quantitative performance evaluations, the illustrative case of estimating the position and velocity of surveillance targets is considered. Efficient target tracking algorithms that can utilize data from a host of sensing modalities and are capable of reliably tracking even uncooperative targets executing fast and complex maneuvers are of interest in a number of applications. The primary motivation for employing neural networks in these applications comes from the efficiency with which more features extracted from different sensor measurements can be utilized as inputs for estimating target maneuvers. Such an approach results in an overall nonlinear tracking filter which has several advantages over the currently popular efforts at designing nonlinear estimation algorithms for tracking applications, the principal one being the reduction of mathematical and computational complexities.
The proceedings contains 144 papers from the 1995 IEEE Custom Integrated Circuits conference. Topics discussed include: gate array technologies and applications;design methodology issues;fabrication and packaging tech...
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The proceedings contains 144 papers from the 1995 IEEE Custom Integrated Circuits conference. Topics discussed include: gate array technologies and applications;design methodology issues;fabrication and packaging technology;reliability by design;analog communication circuits;mixed signal and switching noise simulation;specialized memory macros and architectures;application-specific digital signal processing;data conversion;device modeling and simulation algorithms;layout analysis and optimization;consumer applications;CMOS for wireless communications;sensor interface and image processing circuits;library development and interconnect modeling;MPEG video and audio ICs;ATM and broadband communications;chip and module layout synthesis.
The artificial network (ANN) field is highly complex. It contains designs which parallel other algorithms to perform tasks like image and speech preprocessing, static function minimization, pattern recognition, system...
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One of the capabilities of multilayer neural nets that has not received much attention is the ability to efficiently fuse information of different forms for facilitating intelligent decision-making. In this paper the ...
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One of the capabilities of multilayer neural nets that has not received much attention is the ability to efficiently fuse information of different forms for facilitating intelligent decision-making. In this paper the authors describe the capabilities and functionality of neural network algorithms for data fusion and implementation of nonlinear tracking filters. For a discussion of details and for serving as a vehicle for quantitative performance evaluations, the illustrative case of estimating the position and velocity of surveillance targets is considered. Efficient target tracking algorithms that can utilize data from a host of sensing modalities and are capable of reliably tracking even uncooperative targets executing fast and complex maneuvers are of interest in a number of applications. The primary motivation for employing neural networks in these applications comes from the efficiency with which more features extracted from different sensor measurements can be utilized as inputs for estimating target maneuvers. Such an approach results in an overall nonlinear tracking filter which has several advantages over the currently popular efforts at designing nonlinear estimation algorithms for tracking applications, the principal one being the reduction of mathematical and computational complexities.
In this paper we consider the problem of decentralized constant-false-alarm-rate (CFAR) detection in a distributed multiradar system, by means of an approach based on the concept of robustness. State-of-the-art bipara...
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In this paper we consider the problem of decentralized constant-false-alarm-rate (CFAR) detection in a distributed multiradar system, by means of an approach based on the concept of robustness. State-of-the-art biparametric CFAR algorithms are computationally demanding and lossy, so the question that arises is: Are they really necessary? We show that the answer is no, or rather not always. A new simple monoparametric CFAR detector with postdetection integration is proposed, that, in spite of the single parameter estimation, allows to obtain a false alarm probability at the fusion center robust against changes of the degree of clutter spikiness. The robustness is obtained by a joint action: multisensorial integration, local temporal integration, in conjunction with a specific monoparametric estimator. After an analysis of the robust algorithm, we determine the detection performance of the multisensor network and present a comparison with a decentralized system employing biparametric algorithms.
This paper describes a decision fusion method based on fuzzy logic and genetic algorithms. For the fusion process the generalized mean aggregation connective is used. The optimal parameters of the generalized mean are...
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ISBN:
(纸本)0819415472
This paper describes a decision fusion method based on fuzzy logic and genetic algorithms. For the fusion process the generalized mean aggregation connective is used. The optimal parameters of the generalized mean are found by a genetic algorithm both with elitist and nonelitist strategy. The results of both strategies are compared. The decision fusion method proposed is tested on a vibration monitoring problem. The decisions from multiple sensors to be fused are obtained by neural networks. First vibration spectra are compressed by recirculation networks. Next classification of compressed signatures is performed for each sensor separately by backpropagation networks. The output of backpropagation networks is the input to the fuzzy fusion center performing the generalized mean operation.
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