Results 1 to 10 of about 491,567 (112)

Fast High-Resolution Phase Diversity Wavefront Sensing with L-BFGS Algorithm [PDF]

open access: yesSensors, 2023
The presence of manufacture error in large mirrors introduces high-order aberrations, which can severely influence the intensity distribution of point spread function.
Haoyuan Zhang   +6 more
doaj   +4 more sources

Sub-Millisecond Phase Retrieval for Phase-Diversity Wavefront Sensor [PDF]

open access: yesSensors, 2020
We propose a convolutional neural network (CNN) based method, namely phase diversity convolutional neural network (PD-CNN) for the speed acceleration of phase-diversity wavefront sensing.
Yu Wu   +3 more
doaj   +4 more sources

Phase Diversity-Based Fourier Ptychography for Varying Aberration Correction

open access: yesFrontiers in Physics, 2022
Fourier ptychography (FP) is geared toward high-resolution imaging with a large field of view efficiently. In the original illumination-based FP scheme, the aberrations in optical systems can be well reconstructed, which plays a prominent role in simple ...
Meng Xiang   +15 more
doaj   +1 more source

Diversity of phase transitions and phase separations in active fluids

open access: yesPhysical Review Research, 2022
Active matter is not only indispensable to our understanding of diverse biological processes, but also provides a fertile ground for discovering novel physics.
Thibault Bertrand, Chiu Fan Lee
doaj   +1 more source

UAVSAR Observations of InSAR Polarimetric Phase Diversity: Implications for NISAR Ionospheric Phase Estimation

open access: yesEarth and Space Science, 2021
The NASA‐ISRO Synthetic Aperture Radar (NISAR) is a repeat‐pass radar mission that will acquire fully polarimetric SAR data in an innovative acquisition mode known as quasi‐quad pol (QQP).
V. Brancato, H. Fattahi
doaj   +1 more source

Direct and legacy effects of genotypic diversity on population performance of Hydrocotyle vulgaris

open access: yesEcological Indicators, 2022
Genetic diversity can have important ecological consequences on population dynamics and ecosystem functions and processes. While the direct effect of genetic diversity on population performance has been widely documented, its soil legacy effect has ...
Ghazala Begum   +4 more
doaj   +1 more source

An Advanced Phase Synchronization Scheme Based on Coherent Integration and Waveform Diversity for Bistatic SAR

open access: yesRemote Sensing, 2021
In the bistatic synthetic aperture radar (BiSAR) system, the deviation between two oscillators in different platforms will cause an additional modulation of BiSAR echoes.
Da Liang   +4 more
doaj   +1 more source

Can InSAR Coherence and Closure Phase Be Used to Estimate Soil Moisture Changes?

open access: yesRemote Sensing, 2020
We studied the influence of the statistical properties of soil moisture changes on the Interferometric Synthetic Aperture Radar (InSAR) coherence and closure phase to determine whether the InSAR coherence and closure phase can be used to estimate soil ...
Yusuf Eshqi Molan, Zhong Lu
doaj   +1 more source

DEVELOPMENT OF AN AGE-PERIOD-COHORT-EXPERIENCE MODEL FOR FILIPINO INTERGENERATIONAL DIVERSITY INQUIRY IN SCHOOLS

open access: yesTạp chí Khoa học Đại học Đà Lạt, 2022
The purpose of this study is to develop a model to scrutinize intergenerational (IG) diversity in the workplace in response to current issues in IG diversity studies.
Roxanne Bongco, Inero Ancho
doaj   +1 more source

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