Results 51 to 60 of about 1,713 (291)

Automatic Detection of Aerial Vehicle in Cloudy Environment by Using Wavelet Enhancement Technique [PDF]

open access: yesRadioengineering, 2017
Automatic target detection of surface to air surveillance and tracking systems in video applications is an important issue, because it is the first step for track initiation and continuity.
A. G. Pakfiliz
doaj  

On packing and covering polyhedra of consecutive ones circulant clutters [PDF]

open access: yes, 2010
Building on work by G. Cornuéjols and B. Novick and by L. Trotter, we give different characterizations of contractions of consecutive ones circulant clutters that give back consecutive ones circulant clutters. Based on a recent result by G. Argiroffo and
Aguilera, Néstor Edgardo   +1 more
core   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

open access: yesAdvanced 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
wiley   +1 more source

Clutter Elimination and Random-Noise Denoising of GPR Signals Using an SVD Method Based on the Hankel Matrix in the Local Frequency Domain

open access: yesSensors, 2018
Ground-penetrating radar (GPR) is a kind of high-frequency electromagnetic detection technology. It is mainly used to locate targets and interfaces in underground structures.
Wenda Bi   +3 more
doaj   +1 more source

Cooperated Moving Target Detection Approach for PA-FDA Dual-Mode Radar in Range-Ambiguous Clutter

open access: yesRemote Sensing, 2023
This paper proposes a cooperated range ambiguous clutter suppression method for moving target detection in the background of range-ambiguous clutter with a phased array (PA)–frequency diverse array (FDA) dual-mode radar.
Zhixin Liu   +5 more
doaj   +1 more source

Mengerian quasi-graphical families and clutters

open access: yes, 2013
Balanceable clutters are clutters whose bipartite representation contains no odd wheel and no odd 3-path configuration as an induced subgraph (this is Truemper’s characterization of balanceable matrices).
Apollonio, N   +2 more
core   +1 more source

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

open access: yesAdvanced 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

Motion Guided Siamese Trackers for Visual Tracking

open access: yesIEEE Access, 2020
Siamese trackers learn the appearance model of the target in the first frame and then exploit the model to locate the target in the subsequent frames. Meanwhile, the appearance model remains unchanged in the subsequent frames. Due to the powerful feature
Chenglong Wu   +6 more
doaj   +1 more source

Joint statistical correction of clutters, spokes and beam height for a radar derived precipitation climatology in southern Germany [PDF]

open access: yesHydrology and Earth System Sciences, 2012
First results of radar derived climatology have emerged over the last years, as datasets of appropriate extent are becoming available. Usually, these statistics are based on time series lasting up to ten years as continuous storage of radar data was ...
A. Wagner, J. Seltmann, H. Kunstmann
doaj   +1 more source

DRIVE‐SAFE: Data‐Driven Robustness and Informed Validation for Evolving Specifications via Formal Evaluation

open access: yesAdvanced Robotics Research, EarlyView.
DRIVE‐SAFE evaluates learning‐based, black‐box autonomous driving policies against evolving temporal safety requirements using Signal Temporal Logic robustness metrics. It aggregates distributional robustness measures with domain‐informed weights to guide iterative retraining.
Kristy Sakano   +3 more
wiley   +1 more source

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