Results 51 to 60 of about 207,009 (229)
Filtering of Azimuth Ambiguity in Stripmap Synthetic Aperture Radar Images
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2014 Due to the specific characteristics of the SAR system, peculiar artifacts can appear on SAR images. In particular, finite pulse repetition frequency (PRF) and nonideal antenna pattern give rise to azimuth ambiguity, with the possible presence of “ghosts” on the image.
DI MARTINO, GERARDO +3 more
openaire +2 more sources
BarnebyLives: An R package to create herbarium specimen labels and clean spreadsheets
Applications in Plant Sciences, EarlyView.Abstract Premise Accessioning herbarium specimens is labor intensive, yet remains vital for research in ecology, evolution, and conservation. As institutional support for herbaria declines, efficient tools are needed to streamline this process. The R package BarnebyLives was developed to assist collectors by supplementing collection notes, verifying ...
Reed Clark Benkendorf, Jeremie B. Fant
wiley +1 more source
A new occurrence of tetrapod footprints from the Late Triassic of the Candelária Sequence, Brazil
The Anatomical Record, EarlyView.Abstract The Hyperodapedon Assemblage Zone of the Candelária Sequence (Santa Maria Supersequence, Paraná Basin) preserves one of the most significant Late Triassic continental vertebrate assemblages in southern Brazil. Despite the relatively well‐documented body fossil record from this interval, ichnological records remain comparatively scarce.
Murilo Andrade‐Silva +1 more
wiley +1 more source
Effective ambiguity checking in biosequence analysis [PDF]
, 2005 Reeder J, Steffen P, Giegerich R. Effective ambiguity checking in biosequence analysis. BMC Bioinformatics. 2005;6(1): 153.Background: Ambiguity is a problem in biosequence analysis that arises in various analysis tasks solved via dynamic programming ...
Peter Steffen +5 more
core +1 more source
Energy‐Flow Regimes and Their Temporal Transitions in a PV‐Building System
Energy Science &Engineering, EarlyView.Unlike production and consumption, which act as external factors, generated energy flows reflect the system's internal behavior regarding energy allocation at each time step. The combination of self‐consumption, surplus, and import of surplus energy into the power grid characterizes how electricity is routed between the building's local consumption and
Jacek Caban +3 more
wiley +1 more source
Image-Domain Discrimination of Real Ship Targets and Azimuth-Ambiguity Ghosts in Maritime SAR Images
IEEE AccessAzimuth ambiguities in maritime synthetic aperture radar (SAR) images can generate ghost-like responses near strong ship scatterers, thereby increasing false alarms and degrading ship-target interpretation and automatic target recognition.
Min-Seok Kang +2 more
doaj +1 more source
Ultra Wide Swath Imaging With Multi-Channel SAR Systems [PDF]
, 2008 Multi-channel radar systems allow for overcoming the inherent limitation of conventional synthetic aperture radar (SAR). An example is the combination of digital beamforming on receive in elevation with multi-aperture SAR signal reconstruction in azimuth
Bordoni, Federica +4 more
core
Immersed Boundary Projection Method for Boundaries With Slip Velocities
International Journal for Numerical Methods in Fluids, EarlyView.A formulation of the immersed boundary method for incompressible flow over arbitrarily‐shaped bodies with surface slip described by the Navier boundary condition is presented. The wall slip velocity and the boundary force are determined implicitly through a projection to satisfy both the boundary condition and the divergence‐free condition of the ...
Takehiro Fujii, Takeshi Omori
wiley +1 more source
Spectral-Based Estimation of the Local Azimuth Ambiguity-to-Signal Ratio in SAR Images
, 2013 An innovative technique to estimate the local azimuth ambiguity-to-signal-ratio (AASR) in synthetic aperture radar (SAR) images is presented. Unlike the backscatter-based technique, the proposed one, based on the spectral properties of the image, does ...
Villano, Michelangelo, Krieger, Gerhard
core +1 more source
Greenhouse Gases: Science and Technology, EarlyView.ABSTRACT Scaling geological CO2 storage requires simultaneously controlling plume migration, pressure buildup, geomechanical integrity, and monitoring cost under deep subsurface uncertainty. Yet early‐stage assessments often treat these elements in isolation, obscuring the decision‐critical couplings between pressure‐defined regulatory exposure and ...
Mrityunjay Singh, Heba Atef, Ingo Sass
wiley +1 more source