Results 91 to 100 of about 6,421,419 (387)

Chip-based photonic radar for high-resolution imaging

, 2019
Radar is the only sensor that can realize target imaging at all time and all weather, which would be a key technical enabler for future intelligent society.
Cong, Rong, Cui, Simin Li Zhengze, Feng, Jing, He, Zhengqian, Pan, Shilong, Yang, Yue, Ye, Xingwei, Zhang, Fangzheng, Zhu, Dan   +8 more
core  

Dual‐Strategy Direct Photocatalytic Patterning for Efficient Perovskite Nanocrystal LED Displays

Advanced Materials, EarlyView.
A dual‐strategy is presented direct photocatalytic patterning that enables high‐resolution, nondestructive patterning and fabrication of efficient crosslinked perovskite nanocrystal‐light‐emitting diodes (PeNC‐LEDs). The first strategy systematically identifies thiol crosslinkers for advanced direct photocatalytic patterning.
Seongkyu Maeng, Junho Kim, Taehyun Kim, Seyun Lee, Seunghee Han, Sun Jae Park, Changjo Kim, Jihan Kim, Jung‐Yong Lee, Himchan Cho   +9 more
wiley   +1 more source

Gridless sparsity-based DOA estimation for sparse linear array

The Journal of Engineering, 2019
A novel two-stage gridless sparsity-based method for sparse linear array direction-of-arrival (DOA) estimation is presented. First, the covariance matrix gridless sparse representation method based on atomic norm minimisation is proposed for ...
Yu Zhang, Gong Zhang, Yingying Kong, Fangqing Wen   +3 more
doaj   +1 more source

Technical approaches, chapter 3, part E [PDF]

Radar altimeters, scatterometers, and imaging radar are described in terms of their functions, future developments, constraints, and ...

core   +1 more source

Ultra Wide Swath Imaging With Multi-Channel SAR Systems [PDF]

, 2008
Multi-channel radar systems allow for overcoming the inherent limitation of conventional synthetic aperture radar (SAR). An example is the combination of digital beamforming on receive in elevation with multi-aperture SAR signal reconstruction in azimuth
Bordoni, Federica, Gebert, Nicolas, Krieger, Gerhard, Moreira, Alberto, Younis, Marwan   +4 more
core  

Direct Integration of Polycrystalline Diamond With 3C‐SiC for Enhanced Thermal Management in GaN HEMTs: Impact of Grain Structure and Interface Engineering

Advanced Materials Technologies, EarlyView.
Polycrystalline diamond (PCD) is directly bonded to 3C‐SiC for GaN HEMTs on a 2‐inch wafer using an advanced room‐temperature process. Despite high thermal conductivity at the growth surface, phonon scattering at the fine‐grained nucleation side raises thermal resistance.
Chiharu Moriyama, Zhe Cheng, Zifeng Huang, Yutaka Ohno, Koji Inoue, Yasuyoshi Nagai, Naoteru Shigekawa, Jianbo Liang   +7 more
wiley   +1 more source

A Fast Approach to Texture-Less Object Detection Based on Orientation Compressing Map and Discriminative Regional Weight

Algorithms, 2018
This paper presents a fast algorithm for texture-less object recognition, which is designed to be robust to cluttered backgrounds and small transformations.
Hancheng Yu, Haibao Qin, Maoting Peng
doaj   +1 more source

Spaceborne radar observations: A guide for Magellan radar-image analysis [PDF]

Geologic analyses of spaceborne radar images of Earth are reviewed and summarized with respect to detecting, mapping, and interpreting impact craters, volcanic landforms, eolian and subsurface features, and tectonic landforms.
Blom, R. G., Crisp, J. A., Elachi, Charles, Farr, T. G., Ford, J. P., Saunders, R. Stephen, Theilig, E. E., Wall, S. D., Yewell, S. B.   +8 more
core   +1 more source

Advanced Synthetic Aperture Radar Based on Digital Beamforming and Waveform Diversity [PDF]

, 2008
This paper introduces innovative SAR system concepts for the acquisition of high resolution radar images with wide swath coverage from spaceborne platforms.
Gebert, Nicolas, Krieger, Gerhard, Moreira, Alberto, Younis, Marwan   +3 more
core   +1 more source

Highly Reliable Hf1‐XZrXO2 with Ultra‐Low Operation Voltage (< 1 V) Enabled by Stoichiometric Control of Tungsten Oxide Interfacial Layer

Advanced Materials Technologies, EarlyView.
This study investigates the impact of the oxidation state of the WOX interfacial layer (IL) on its conductance and the associated voltage drop, aiming to mitigate fatigue and imprint in HZO‐based devices. As a result, through scaling the ferroelectric layer and engineering ILs, reduced wake‐up, functional operation exceeding 1011 cycles, and data ...
Mostafa Habibi, Alireza Kashir, Tony Schenk, Hojung Jang, Seungyeol Oh, Jaeseon Kim, Geonhui Han, Donghwa Lee, Foroozan Koushan, Hyunsang Hwang   +9 more
wiley   +1 more source