Results 31 to 40 of about 26,768 (217)

Unsupervised change detection method in SAR images based on deep belief network using an improved fuzzy C‐means clustering algorithm

open access: yesIET Image Processing, 2021
Deep learning methods have recently displayed ground‐breaking results for synthetic aperture radar image change detection problem. However, they still face the challenges of intrinsic noise and the difficulty of acquiring labeled data.
Sanae Attioui, Said Najah
doaj   +1 more source

Ellipsoid‐Based Interval‐Type Uncertainty Model Updating Based on Riemannian Manifold and Gaussian Process Model

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Modern engineering systems require advanced uncertainty‐aware model updating methods that address parameter correlations beyond conventional interval analysis. This paper proposes a novel framework integrating Riemannian manifold theory with Gaussian Process Regression (GPR) for systems governed by Symmetric Positive‐Definite (SPD) matrix ...
Yanhe Tao   +3 more
wiley   +1 more source

Ground deformation and fissure activity in Datong basin, China 2007–2010 revealed by multi-track InSAR

open access: yesGeomatics, Natural Hazards & Risk, 2019
The Datong basin is one of the complex geologic environments in China. Several faults are distributed in the basin, and a number of hidden faults have been discovered within the basin. Ground fissures (GFs) and land subsidence occur in this region.
Chengsheng Yang   +5 more
doaj   +1 more source

Prioritized Real‐Time UAV‐Based Vessel Detection for Efficient Maritime Search

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT Real‐time vessel detection in maritime environments is crucial for diverse applications requiring speed and accuracy. Static camera views often introduce blind spots, compromising detection efficiency. This paper proposes a novel, real‐time UAV‐based system that uses a dynamic camera control strategy to address this limitation.
Lyes Saad Saoud   +6 more
wiley   +1 more source

Distributed Aperture Coherence-synthetic Radar Technology

open access: yesLeida xuebao, 2017
The distributed aperture coherence-synthetic radar could accomplish long-range and high-precision detection performance according to include multi-unit radars and energy synthesize in space.
Lu Yaobing, Gao Hongwei, Zhou Baoliang
doaj   +1 more source

Quantifying aboveground herbaceous biomass in grassy ecosystems: a comparison of field and high‐resolution UAV‐LiDAR approaches

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
The abundance of herbaceous vegetation in grassy ecosystems—which cover >25% of the world's land surface—is highly variable and impacts key ecological processes including carbon sequestration and support for grazing wildlife and livestock. Here, we present a method for using high‐resolution, UAV‐borne Light Detection and Ranging (LiDAR) to estimate ...
Tyler C. Coverdale   +3 more
wiley   +1 more source

Anti-Jamming Imaging Method for Carrier-Free Ultra-Wideband Airborne SAR Based on Variational Modal Decomposition

open access: yesRemote Sensing
This paper investigates the airborne synthetic aperture radar via outfield experiments based on carrier-free ultra-wideband signals with fifth-order Gaussian pulses with imaging using the backward projection algorithm. Typical blanket jamming is selected
Yue Yuan   +4 more
doaj   +1 more source

Covalent Organic Framework Nanofilm Heterojunctions: Lamination Effect and Suppressed Self‐Discharge in Flexible Micro‐Supercapacitors Energy Storage

open access: yesSmall, EarlyView.
Tailored sandwich‐type COF heterojunctions achieve optimal capacitance and energy density through H⁺ ion lamination and π‐electron conduction, demonstrating the potential for miniaturized and flexible energy storage devices. Abstract Covalent organic frameworks (COFs) nanofilms with well‐ordered channels and highly active interfaces have great ...
Xiaoyang Xu   +8 more
wiley   +1 more source

Parametric Sparse Representation and Its Applications to Radar Sensing

open access: yesLeida xuebao, 2016
Sparse signal processing has been utilized to the area of radar sensing. Due to the presence of unknown factors such as the motion of the targets of interest and the error of the radar trajectory, a predesigned dictionary cannot provide the optimally ...
Li Gang, Xia Xiang-Gen
doaj   +1 more source

Nanopore Trap for Label‐Free Fingerprinting of Surface‐modified Single Nanoparticles

open access: yesSmall Methods, EarlyView.
A solid‐state nanopore trapping‐based methodology combines “trap‐release” measurement protocol with multiple features extracted from ionic current of trapping events to generate unique electrical fingerprints of nanoparticles with distinct surface functional layers.
Nianduo Cai   +4 more
wiley   +1 more source

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