Results 41 to 50 of about 22,111 (245)

Fast InSAR Phase Unwrapping Method for Complex Mountainous Areas With High Noise and Large Gradient Changes

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Interferometry synthetic aperture radar (InSAR) is essential for monitoring surface deformation and geological hazards. InSAR applications in complex mountainous regions are challenging due to high noise levels and large phase gradient variations, which ...
Dingyi Zhou, Zhifang Zhao
doaj   +1 more source

Unwrapping phase fluctuations in one dimension

open access: yes, 2018
Correlation functions in one-dimensional complex scalar field theory provide a toy model for phase fluctuations, sign problems, and signal-to-noise problems in lattice field theory.
Detmold, William   +2 more
core   +1 more source

Wrapping Transition and Wrapping-Mediated Interactions for Discrete Binding along an Elastic Filament: An Exact Solution [PDF]

open access: yes, 2012
The wrapping equilibria of one and two adsorbing cylinders are studied along a semi-flexible filament (polymer) due to the interplay between elastic rigidity and short-range adhesive energy between the cylinder and the filament.
Alberts B.   +6 more
core   +4 more sources

Using Phase Unwrapping Methods to Apply D-InSAR in Mining Areas

open access: yesCanadian Journal of Remote Sensing, 2019
Phase unwrapping is one of the key processing steps of D-InSAR (Differential Interferometric Synthetic Aperture Radar), and its accuracy has a great impact on the accuracy of interferometric deformation results.
Bei Zhang, Jiuyi Li, Hongrui Ren
doaj   +1 more source

Airborne InSAR Interferometric Phase Analysis, Unwrapping Method, and Fast Implementation in Low Coherence Areas

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Due to synthetic aperture radar (SAR) imaging geometry and scattering characteristics, there are some low coherence areas in interferometric SAR (InSAR) data, such as shadow and water, where the interferometric phase is discontinuous.
Fangfang Li   +3 more
doaj   +1 more source

Resolving depth measurement ambiguity with commercially available range imaging cameras [PDF]

open access: yes, 2010
Time-of-flight range imaging is typically performed with the amplitude modulated continuous wave method. This involves illuminating a scene with amplitude modulated light.
Cree, Michael J.   +3 more
core   +2 more sources

One shot profilometry using iterative two-step temporal phase-unwrapping

open access: yes, 2016
This paper reviews two techniques that have been recently published for 3D profilometry and proposes one shot profilometry using iterative two-step temporal phase-unwrapping by combining the composite fringe projection and the iterative two-step temporal
Du, Guangliang   +6 more
core   +1 more source

From Rigid to Soft Robotic Approaches for Neuroendoscopy

open access: yesAdvanced Robotics Research, EarlyView.
Robotic assistance has had minimal impact on deep intraventricular surgeries, where small‐scale, precision, and reduced invasiveness can contribute to improved patient outcomes. Emerging technologies in rigid, soft, and hybrid robotics are reviewed to identify the most promising mechanisms for deep brain navigation in addition to an attempt to identify
Kieran Gilday   +3 more
wiley   +1 more source

An Anti-Noise-Designed Residual Phase Unwrapping Neural Network for Digital Speckle Pattern Interferometry

open access: yesOptics
DSPI (Digital Speckle Pattern Interferometry) is a non-destructive optical measurement technique that obtains phase information of an object through phase unwrapping.
Biao Wang   +4 more
doaj   +1 more source

Phase Unwrapping and One-Dimensional Sign Problems

open access: yes, 2018
Sign problems in path integrals arise when different field configurations contribute with different signs or phases. Phase unwrapping describes a family of signal processing techniques in which phase differences between elements of a time series are ...
Detmold, William   +2 more
core   +1 more source

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