Results 41 to 50 of about 1,140 (180)

Performance evaluation of backscattering coefficients and polarimetric decomposition parameters for marsh vegetation mapping using multi-sensor and multi-frequency SAR images

open access: yesEcological Indicators, 2023
Wetland vegetation is the basis for wetland ecosystems to regulate climate change, carbon sequestration and maintain biodiversity. Therefore, high-precision mapping and dynamic monitoring of wetland vegetation are essential for the effective management ...
Bolin Fu   +7 more
doaj   +1 more source

Metasurface‐Enabled Single‐Shot Intensity‐and‐Phase‐Interrogation Surface‐Plasmon‐Resonance Microscopy

open access: yesLaser &Photonics Reviews, EarlyView.
A metasurface‐enabled full‐Stokes polarimeter is integrated with phase‐interrogated surface plasmon resonance microscopy to enable single‐shot recovery of intensity and differential phase. The non‐interferometric platform supports quantitative refractive‐index and thickness mapping, wavelength‐resolved sensing, and dynamic multi‐channel monitoring ...
Houxin Fan   +5 more
wiley   +1 more source

Geometrical Structure Classification of Target HRRP Scattering Centers Based on Dual Polarimetric $H/\alpha$ Features

open access: yesIEEE Access, 2019
Polarimetric high resolution range profile (HRRP) contains the geometrical structural information along radar line-of-sight and has shown great potentials in target recognition. In existing researches, H/α decomposition has been applied to exploit
Teng Long   +3 more
doaj   +1 more source

Automatic insect identification, counting, and monitoring techniques: a review

open access: yesPest Management Science, EarlyView.
Automated insect monitoring increasingly integrates optical, acoustic, infrared, radar, electrostatic, and biosensing technologies with artificial intelligence. No single approach is universally optimal; reliable deployment depends on task‐specific validation, representative datasets, robustness under field conditions, energy autonomy, connectivity ...
Mariano González García   +3 more
wiley   +1 more source

Improved Cerrado Wetland Mapping Through Seasonal Moisture Metrics, Terrain Information and Semantic Segmentation

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Brazil's Cerrado valley wetlands—swamp savanna and gallery forest—are highly important for the biome's water cycle and carbon storage and are susceptible to degradation from the impacts of land use expansion and the climate crisis. In support of their detailed monitoring and assessment, we developed and tested a transferable mapping approach that ...
Felix Beer   +6 more
wiley   +1 more source

On the Use of Generalized Volume Scattering Models for the Improvement of General Polarimetric Model-Based Decomposition

open access: yesRemote Sensing, 2017
Recently, a general polarimetric model-based decomposition framework was proposed by Chen et al., which addresses several well-known limitations in previous decomposition methods and implements a simultaneous full-parameter inversion by using complete ...
Qinghua Xie   +4 more
doaj   +1 more source

Applying Polarimetric Target Decomposition to 2D Turntable ISAR Imagery of a Complex Vehicle

open access: yesInternational Journal of Antennas and Propagation, 2022
The capabilities of polarimetric target decomposition in SAR-based ATR applications are investigated by using 2D turntable ISAR imagery of a T-72 tank. To characterize target’s anisotropic scattering properties, wide-angle case is considered through the ...
Sevket Demirci
doaj   +1 more source

Wave Tracing: Generalizing The Path Integral To Wave Optics

open access: yesComputer Graphics Forum, EarlyView.
Abstract Modeling the wave nature of light and the propagation and diffraction of electromagnetic fields is crucial for the accurate simulation of many phenomena, yet wave simulations are significantly more computationally complex than classical ray‐based models.
Shlomi Steinberg, Matt Pharr
wiley   +1 more source

Recognition of Ships and Chaff Clouds Based on Sophisticated Polarimetric Target Decomposition

open access: yesLeida xuebao, 2021
The recognition of ships from chaff cloud jamming is challenging because they have similar dimensions and radar cross sections. In this paper, we propose a polarimetric recognition technique with sophisticated polarimetric target decomposition.
Sinong QUAN   +5 more
doaj   +1 more source

Coupling Oxygen‐Enriched Drip Irrigation With an Optimized Nitrogen Rate Improves Yield, Water Productivity and Grain Quality of Winter Wheat: A Two‐Season Field Study

open access: yesJournal of Agronomy and Crop Science, Volume 212, Issue 6, November 2026.
ABSTRACT Drip irrigation displaces soil air at the emitter and transiently depresses dissolved oxygen (DO) in the wetted root zone, and recovery is slow in fine‐textured, slightly saline soils. Whether aeration of the irrigation stream can be combined with nitrogen (N) management to raise water productivity while safeguarding grain quality in winter ...
Qi Xu   +3 more
wiley   +1 more source

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