Results 61 to 70 of about 768,249 (233)

Wavelet-Based Compressed Sensing for Polarimetric SAR Tomography [PDF]

, 2013
Tomographic synthetic aperture radar (SAR) imaging has been recently formulated in a wavelet-based compressed sensing (CS) framework. This paper reviews the underlying sparsity-driven algorithms for single-channel as well as polarimetric tomography, and ...
Nannini, Matteo, Aguilera, Esteban, Andreas, Reigber   +2 more
core  

Helicity‐Defined Analog Conductance States in Chiral Perovskite Synapses

Advanced Materials, EarlyView.
Chiral perovskite synapses convert the handedness of circularly polarized light into persistent analog memory during electrical programming. An optimized n = 3 structure combines strong helicity selectivity with low read noise, enabling 72 distinct conductance levels.
Min Jong Lee, Hyoungwook Cho, Sang Heon Lee, Ohhyun Kwon, Minil Kang, Dong Gyu Lee, Seongwon Lee, Tae Kyung Lee, Gyeong Min Lee, Minseong Um, Sung Su Yoon, Gayoung Ham, Hyojung Cha, Hyungju Ahn, SungWoo Nam, Hyung‐Min Lee, Jae Won Shim   +16 more
wiley   +1 more source

Kirigami‐Inspired Stretchable Silicon Solar Cell Modules as Portable Power Sources

Advanced Materials, EarlyView.
Kirigami‐inspired structured substrates are designed to craft stretchable silicon solar cell modules, showcasing remarkable stability upon deformation and retaining high output efficiency. This innovative approach holds great promise for the utilization of silicon modules for wearable devices.
Yusheng Zhang, Chenyi Zhang, Pei Wang, Yetai Cheng, Qi Liang, Yonghuan Li, Zhengdong Wei, Huanyu Zhou, Xinyi Kong, Minghua Li, Yifan Wang, Zhishan Bo, Yuqiang Liu, Antonio Facchetti   +13 more
wiley   +1 more source

An Anisotropic Scattering Analysis Method Based on the Statistical Properties of Multi-Angular SAR Images

Remote Sensing, 2020
The scatterings of many targets are aspect dependent, which is called anisotropy. Multi-angular synthetic aperture radar (SAR) is a suitable means of detecting this kind of anisotropic scattering behavior by viewing targets from different aspect angles ...
Fei Teng, Yun Lin, Yanping Wang, Wenjie Shen, Shanshan Feng, Wen Hong   +5 more
doaj   +1 more source

Wavelet-Based Compressed Sensing for SAR Tomography of Forested Areas [PDF]

, 2012
Synthetic aperture radar (SAR) tomography is a 3-D imaging modality that is commonly tackled by spectral estimation techniques. Thus, the backscattered power along the cross-range direction can be readily obtained by computing the Fourier spectrum of a ...
Nannini, Matteo, Aguilera, Esteban, Reigber, Andreas   +2 more
core   +1 more source

A Self‐Cleaning Solar Evaporator Based on MXene/Aramid Nanofiber Aerogels for Efficient Water Desalination

Advanced Materials Interfaces, EarlyView.
This study develops a self‐cleaning solar evaporator based on MXene‐coated aramid nanofiber aerogels for efficient desalination under high‐salinity conditions. The cylindrical evaporator combines strong photothermal conversion, capillary water transport, and self‐rotation triggered by salt accumulation.
Mandeep Singh, Si (Alex) Qin, Ken Aldren S. Usman, Yuxi Ma, Dan Liu, Weiwei Lei   +5 more
wiley   +1 more source

Bi- and Multistatic SAR: Potentials and Challenges [PDF]

, 2004
Bi- and multistatic synthetic aperture radar (SAR) operates with distinct transmit and receive antennas which are mounted on separate platforms. Such a spatial separation has several operational advantages which will increase the capability, reliability ...
Moreira, Alberto, Fiedler, Hauke, Krieger, Gerhard   +2 more
core  

Efficient Time-Domain Image Formation with Precise Topography Accommodation for General Bistatic SAR Configurations [PDF]

, 2011
Due to the lack of an appropriate symmetry in the acquisition geometry, generalised bistatic SAR cannot benefit from the two main properties of low-to-moderate resolution monostatic SAR: azimuth-invariance and topography-insensitivity.
Marc Rodriguez-Cassola, Alberto Moreira, Moreira, Alberto, Pau Prats, Prats, Pau, Rodriguez-Cassola, Marc, Krieger, Gerhard, Gerhard Krieger   +7 more
core   +1 more source

Coherent Absorption Reveals Colors Hidden in a Grey Fabry–Pérot Cavity

Advanced Optical Materials, EarlyView.
A dielectric thin film shows colors depending on its thickness; this effect can be used to encode information normally accessible through single‐beam spectroscopy. We developed a method to conceal this kind of information, based on coating the dielectric with a matched conductor, that suppresses the color‐bearing thin‐film resonances.
Giuseppe E. Lio, Giulio Carotta, Lorenzo Lavista, Andrea Camposeo, Giacomo Venturi, Agnese Guernieri, Alessandro Pitanti, Simon A. R. Horsley, Giuseppe C. La Rocca, Alessandro Tredicucci, Simone Zanotto   +10 more
wiley   +1 more source

Nonlocomotory Robotic Strategies for Dynamic Rotation Control in Terrestrial Robots: A Review

Advanced Robotics Research, EarlyView.
Terrestrial robots increasingly require rapid body rotation to maintain stability and agility in complex environments. This review shows nonlocomotory rotational control strategies that operate without ground contact, including reaction wheels, tails, bars, limbs, and thrusters.
Y. Liang, J. An, X. Zheng, D. Wang, S. Wang, X. Wang, P. Zhu, J. Pei, S. Li, J. Paripurana, Y. Han, Z. Tang, X. Gan, Q. He, X. Ma   +14 more
wiley   +1 more source