Results 251 to 260 of about 2,276,222 (297)
Some of the next articles are maybe not open access.
2005
Within this chapter the various processes which are required to provide a radar target recognition function are brought together and build on the concepts that have been discussed earlier in the book. Key radar measurements issues, which were extensively presented earlier, are reviewed and include a discussion on target signature distortion in Section ...
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Within this chapter the various processes which are required to provide a radar target recognition function are brought together and build on the concepts that have been discussed earlier in the book. Key radar measurements issues, which were extensively presented earlier, are reviewed and include a discussion on target signature distortion in Section ...
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Automatic target recognition of ground targets
2013An overview of the fundamentals of ground target recognition using SAR has been given. There is a tendency, when discussing ground target ATR, to consider only the most complex problems consisting of very many target classes and challenging clutter environments.
David Blacknell, Luc Vignaud
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Detection and recognition of visual targets
Journal of the Optical Society of America A, 1985To aid the development of detection-based interpretations of visual resolution, we evaluated theorems that (1) relate observers' performance in detection of a single target to that in 1-of-m signal detection and (2) predict recognition performance from measured performance at 1-of-m detection.
T, Benzschawel, T E, Cohn
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2012
A wide variety of radar-based ATR systems and applications have been developed and documented in open literature. As different as these may seem on the surface, they all tend to revolve around four basic steps, labeled in this chapter as the unified framework for ATR. First, the target set must be identified.
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A wide variety of radar-based ATR systems and applications have been developed and documented in open literature. As different as these may seem on the surface, they all tend to revolve around four basic steps, labeled in this chapter as the unified framework for ATR. First, the target set must be identified.
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Symmetry in target recognition
2008 4th International Conference on Ultrawideband and Ultrashort Impulse Signals, 2008Symmetry has important consequences for target recognition. Rotation and reflection symmetry for targets near a ground or water surface not only help to identify the targets, but also aid in data processing to increase accuracy. While clutter (other scatterers) interfere with the target signatures, symmetry in the clutter can be used to suppress this ...
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Target recognition under nonuniform illumination conditions
Applied Optics, 2009A two-step algorithm for reliable recognition of a target imbedded into a two-dimensional nonuniformly illuminated and noisy scene is presented. The input scene is preprocessed with a space-domain pointwise procedure followed by an optimum correlation.
Victor H, Diaz-Ramirez, Vitaly, Kober
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Moving Targets: Recognition of Alkyl Groups
Chemistry – A European Journal, 2006AbstractAlkyl chains can adopt seemingly unusual conformations, such as helices, when bound to natural and synthetic hydrophobic receptors. This plasticity allows the alkanes to assume shapes that are congruent to the receptor's space and fill that space properly.
Michael P, Schramm, Julius, Rebek
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Target Recognition Considerations
1987This chapter discusses fundamental considerations in radar target recognition. The overall goal of the chapter is threefold: (1) to introduce some of the basic issues associated with the problem of target recognition, (2) to discuss and compare various target recognition techniques, and (3) to provide examples of applications of target recognition ...
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Automatic target recognition employing signal compression
Applied Optics, 2007Quadratic correlation filters (QCFs) have been used successfully to detect and recognize targets embedded in background clutter. Recently, a QCF called the Rayleigh quotient quadratic correlation filter (RQQCF) was formulated for automatic target recognition (ATR) in IR imagery.
Ragothaman, Pradeep +3 more
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Target recognition–induced NK-cell responses
Blood, 2010In this issue of Blood , Fauriat and colleagues provide a thorough study of the pattern and timing of NK-cell cytokine and chemokine secretion in response to target cell recognition. Most importantly, the authors demonstrate that CD56 dim NK cells rather than CD56 bright NK cells are the major cytokine and chemokine producer upon target recognition.
Xiaoli, Zhang, Jianhua, Yu
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