Results 41 to 50 of about 45,172 (297)

Echolocation by the harbour porpoise: Life in coastal waters

open access: yesFrontiers in Physiology, 2013
The harbour porpoise is one of the smallest and most widely spread of all toothed whales. They are found abundantly in coastal waters all around the northern hemisphere.
Lee Anton Miller, Magnus eWahlberg
doaj   +1 more source

Intelligent Sky Guardians (InSkyGuard): An Aerial Robotic Swarm for Autonomous Detection and Entrapment of Rogue Multirotors

open access: yesAdvanced Robotics Research, EarlyView.
Intelligent Sky Guardians (InSkyGuard) is introduced as a four‐drone swarm that autonomously detects, tracks, and safely captures rogue drones using a coordinated net system. Computer vision and leader–follower control architecture enable synchronized enclosure, while integrated failsafes enhance system reliability. Validated through closed‐environment
Joshua Hastings   +6 more
wiley   +1 more source

Sea Clutter Suppression by Atomic Norm Minimisation in Frequency Diverse Array‐Space‐Time Adaptive Processing Radar Under Range Ambiguity

open access: yesIET Radar, Sonar & Navigation
Sea 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
doaj   +1 more source

3D target tracking and shape reconstruction in clutter using Gaussian process and point completion network

open access: yesIET Radar, Sonar & Navigation, 2023
Existing problems for 3D extended target tracking and contour reconstruction under clutter environment are thoroughly investigated in this article. Due to the sparsity of available point cloud data and interference from clutter, the shape completion ...
Hongge Mao, Xiaojun Yang
doaj   +1 more source

Monotone clutters

open access: yesDiscrete 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.
openaire   +1 more source

Learning‐Based Soft Robotic Grasping: Recent Progress and Remaining Challenges

open access: yesAdvanced Robotics Research, EarlyView.
This review analyzes learning‐based soft robotic grasping from a pipeline‐oriented perspective, encompassing soft gripper design, multimodal sensing, and learning‐based planning and control. It surveys key neural network architectures and benchmark datasets and identifies critical challenges such as sim‐to‐real transfer, generalization, and continual ...
Arnab Majumder   +3 more
wiley   +1 more source

Ground moving target indication of polarimetric interferometric synthetic aperture radar using joint scattering vector

open access: yesIET Radar, Sonar & Navigation
Ground 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
doaj   +1 more source

Mutual Clutter Suppression Techniques for FM Sonars

open access: yesArchives 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
doaj   +1 more source

On interval clutters

open access: yesDiscrete 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 (
openaire   +1 more source

Salient Objects in Clutter

open access: yesIEEE Transactions on Pattern Analysis and Machine Intelligence, 2023
This paper identifies and addresses a serious design bias of existing salient object detection (SOD) datasets, which unrealistically assume that each image should contain at least one clear and uncluttered salient object. This design bias has led to a saturation in performance for state-of-the-art SOD models when evaluated on existing datasets. However,
Deng-Ping Fan   +4 more
openaire   +4 more sources

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