Results 1 to 10 of about 6,444,341 (242)

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

Sensors, 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, Youming Guo, Hua Bao, Changhui Rao   +3 more
doaj   +5 more sources

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

Sensors, 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, Guohao Ju, Liang Guo, Boqian Xu, Xiaoquan Bai, Fengyi Jiang, Shuyan Xu   +6 more
doaj   +4 more sources

Vortex-Enhanced Coherent-Illumination Phase Diversity for Phase Retrieval in Coherent Imaging Systems [PDF]

Optics Letters, 2016
Néstor Uribe-Patarroyo, René Restrepo
exaly   +2 more sources

Phase Diversity-Based Fourier Ptychography for Varying Aberration Correction

Frontiers 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, Meng Xiang, An Pan, Jinpeng Liu, Jinpeng Liu, Jinpeng Liu, Teli Xi, Teli Xi, Teli Xi, Xin Guo, Fei Liu, Fei Liu, Fei Liu, Xiaopeng Shao, Xiaopeng Shao, Xiaopeng Shao   +15 more
doaj   +1 more source

Diversity of phase transitions and phase separations in active fluids

Physical 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

Earth 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

Ecological 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, Jun-Qin Gao, Ming-Hua Song, Wei Xue, Fei-Hai Yu   +4 more
doaj   +1 more source

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

Remote 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, Heng Zhang, Yonghua Cai, Kaiyu Liu, Ke Zhang   +4 more
doaj   +1 more source

Performance Evaluation and Diversity Analysis of RIS-Assisted Communications Over Generalized Fading Channels in the Presence of Phase Noise

IEEE Open Journal of the Communications Society, 2022
In this paper, we develop a unified theoretical framework for analyzing the outage performance of reconfigurable intelligent surfaces (RISs)-assisted communication systems over generalized fading channels and in the presence of phase noise.
Imene Trigui, Wessam Ajib, Wei-Ping Zhu, Marco Di Renzo Renzo   +3 more
doaj   +1 more source

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

Remote 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