Results 11 to 20 of about 13,727 (206)

A Comparative Study of Speckle Interferometric Techniques

open access: yes, 1995
Recently we have described an additive-subtractive phase modulated (ASPM) scheme which can be adapted to conventional subtractive speckle interferometry setups to reduce the noise susceptibility of these inspection tools [1–4]. In particular, these ASPM speckle interferometric techniques will freeze out unwanted environmental noise of frequencies much ...
Chatters, Thomas   +2 more
openaire   +4 more sources

PURIFY: a new algorithmic framework for next-generation radio-interferometric imaging [PDF]

open access: yes, 2014
In recent works, compressed sensing (CS) and convex opti- mization techniques have been applied to radio-interferometric imaging showing the potential to outperform state-of-the-art imaging algorithms in the field. We review our latest con- tributions [1,
Wiaux, Yves; id_orcid   +8 more
core   +1 more source

Interferometric Synthetic Aperture Radar (SAR) Missions Employing Formation Flying

open access: yes, 2010
This paper presents an overview of single-pass interferometric Synthetic Aperture Radar (SAR) missions employing two or more satellites flying in a close formation.
Hajnsek, Irena   +4 more
core   +1 more source

High-speed interferometric FBG interrogator with dynamic and absolute wavelength measurement capability

open access: yes, 2013
A passive, interferometric wavelength demodulation technique has been extended to measure the absolute wavelengths of a multiplexed array of fiber Bragg grating sensors. The scheme retains its original strain resolution of 10 nε/√{Hz}. A proof-of-concept
Perry, Marcus   +3 more
core   +1 more source

Polarization properties of interferometrically interrogated fiber Bragg grating and tandem-interferometer strain sensors [PDF]

open access: yes, 2006
Lead sensitivity in low-coherence interferometric fiber-optic sensors is a well-known problem. It can lead to a severe degradation in the sensor resolution and accuracy through its effect on the fringe visibility and interferometric phase.
Flockhart, G M H   +2 more
core   +1 more source

Vertical Resolution Enhancement by Applying Polarimetric Spectral Analysis Techniques to Multibaseline InSAR Data

open access: yes, 2012
Polarimetric spectral analysis techniques have been recently introduced for processing multibaseline interferometric synthetic aperture radar data that are affected by the speckle phenomenon.
Kostas Papathanassiou   +3 more
core   +1 more source

Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides

open access: yesAdvanced Functional Materials, EarlyView.
A triple point is identified in the phase diagram of low‐symmetry epitaxial BiFeO3 thin film along with an extended regime of phase competition associated with a flattened energy landscape. The electromechanical response is shown to be governed by correlated interphase‐boundary motion, including scale‐free avalanche dynamics characteristic of systems ...
Mohammad Moein Seyfouri   +11 more
wiley   +1 more source

A Reproducible and Scalable Process for High Yield Mesenchymal Stromal Cell Extracellular Vesicles Production

open access: yesAdvanced Materials Technologies, EarlyView.
Mesenchymal stem cell derived extracellular vesicles (MSC‐EVs) are a promising therapeutic tool for regenerative medicine. However, the field lacks a reproducible high‐yield production method to answer the quantities needed for clinical translation.
Christophe Wong   +7 more
wiley   +1 more source

Solid-state interferometric interrogator and multiplexer for high-speed dynamic and absolute FBG wavelength measurement

open access: yes, 2013
We present a solid-state FBG array interrogator and multiplexer capable of determining absolute FBG wavelengths and of providing high-speed, high-resolution static and dynamic measurements.
Perry, Marcus   +7 more
core   +1 more source

Home - About - Disclaimer - Privacy