Results 41 to 50 of about 35,629 (311)
Discrete Mathematics, 1993 A clutter (or Sperner system) is \(k\)-monotone if so is the corresponding Boolean function. The author characterizes \(k\)-monotone clutters in terms of excluded minors and applies this result to characterize 2- or 3- monotone matroids.
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A Quality Control Concept for Radar Reflectivity, Polarimetric Parameters, and Doppler Velocity [PDF]
, 2006 Over the last few years the use of weather radar data has become a fundamental part of various applications like rain-rate estimation, nowcasting of severe weather events, and assimilation into numerical weather prediction models.
Friedrich, Katja +2 more
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Collision‐Resilient Winged Drones Enabled by Tensegrity Structures
Advanced Robotics Research, EarlyView.Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui +5 more
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IET Radar, Sonar & NavigationSea clutter suppression is a hot topic for airborne radar. Space‐time adaptive processing (STAP) is a useful approach to address this issue. Currently, range ambiguity is a problem to restrict conventional STAP performance.
Zhao Wang +4 more
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Mutual Clutter Suppression Techniques for FM Sonars
Archives of Acoustics, 2016 The article presents methods that help in the elimination of mutual clutter as well as the consequences of two FM sounding signal sonars operating in the same body of water and frequency band. An in-depth analysis of mutual clutter was carried out.
Jacek MARSZAL +4 more
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the plot, the clutter, the sampling and its lens: occlusion measures for automatic clutter reduction [PDF]
, 2006 Previous work has demonstrated the use of random sampling in visualising large data sets and the practicality of a sampling lens in enabling focus+context viewing.
Dix, Alan, Ellis, G.
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Advanced Robotics Research, EarlyView.This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska +2 more
wiley +1 more source
IET Radar, Sonar & NavigationGround moving target indication (GMTI) plays a critical role in both civilian applications and military applications. The accuracy of complex images coregistration is a major factor for multichannel synthetic aperture radar (SAR) GMTI.
Jing Xu +3 more
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Sensors, 2006 The performance of weak gaseous plume-detection methods in hyperspectral long-wave infrared imagery depends on scene-specific conditions such at the ability to properly estimate atmospheric transmission, the accuracy of estimated chemical signatures, and
Nicolas Hengartner, Tom Burr
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Discrete Mathematics, 2002 A hypergraph is called interval hypergraph, if its vertices can be linearly order that every edge is a consecutive set of vertices. Some thirty years back Tucker gave a characterization of interval hypergraphs in terms of excluded subhypergraphs. This paper characterizes interval clutter hypergraphs in terms of excluded minors and excluded subclutters (
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