Results 61 to 70 of about 2,362,034 (304)

SAR ATR Based on 3D Parametric Electromagnetic Scattering Model

Leida xuebao, 2017
Automatic Target Recognition (ATR) is one of the most difficult problems in Synthetic Aperture Radar (SAR) data interpretation. In recent years, the model-based SAR target recognition method has attracted much attention because of its good performance in
Wen Gongjian, Zhu Guoqiang, Yin Hongcheng, Xing Mengdao, Yang Hu, Ma Conghui, Yan Hua, Ding Baiyuan, Zhong Jinrong   +8 more
doaj   +1 more source

A passive second‐order noise‐shaping SAR ADC architecture with increased freedom in NTF synthesis and relaxed clock‐jitter issue

Electronics Letters, 2022
Noise‐shaping (NS) successive approximation register (SAR) analogue‐to‐digital converters (ADCs) are an attractive architecture for power and area efficiency in moderate resolution and bandwidth applications.
Weihao Wang, Xiao Wang, Bo Zhao, Kong‐pang Pun   +3 more
doaj   +1 more source

Geometric, Radiometric, Polarimetric and Along-Track Interferometric Calibration of the new F-SAR System of DLR in X-Band [PDF]

, 2008
Since November 2006, DLR operates F-SAR - a new airborne SAR sensor beside its experimental airborne SAR sensor E-SAR. F-SAR is a totally new development utilizing most modern hardware.
Nottensteiner, Anton, Horn, Ralf, Reigber, Andreas, Baumgartner, Stefan, Scheiber, Rolf, Fischer, Jens   +5 more
core  

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

Learning Capsules for SAR Target Recognition

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Deep learning has been successfully utilized in synthetic aperture radar (SAR) automatic target recognition tasks and obtained state-of-the-art results. However, current deep learning algorithms do not perform well when SAR images are occluded, noisy, or
Yunrui Guo, Zongxu Pan, Meiming Wang, Ji Wang, Wenjing Yang   +4 more
doaj   +1 more source

F-SAR – DLR’s advanced airborne SAR system onboard DO228 [PDF]

, 2008
The Microwaves and Radar Institute of the German Aerospace Center (DLR) is known for its consistent work on the field of airborne synthetic aperture radar and its application.
Nottensteiner, Anton, Rolf Scheiber, Anton Nottensteiner, Horn, Ralf, Ralf Horn, Scheiber, Rolf   +5 more
core  

Engineering the Assembly Freedom of Donor–Acceptor Type Self‐Assembled Monolayers Toward Efficient and Stable Flexible Perovskite Photovoltaics

Advanced Materials, EarlyView.
Assembly freedom engineering breaks the vertical alignment constraint of donor–acceptor self‐assembled monolayers, tuning their assembly freedom to achieve quasi‐random molecular orientation. This strategy simultaneously boosts interfacial charge transport and mechanical robustness, enabling high‐efficiency and mechanically stable flexible perovskite ...
Biao Zhou, Guosen Zhang, Hao Wang, Juntao Zhao, Ruijia Zhang, Hong Zhang, Mingwei An, Yue Wang, Yang Wang, Wallace C. H. Choy   +9 more
wiley   +1 more source

Terahertz Squint SAR Imaging Based on Decoupled Frequency Scaling Algorithm

Remote Sensing
Terahertz synthetic aperture radar (SAR) can achieve high-resolution imaging of the target area through a large bandwidth, while squint imaging can flexibly detect the target area by adjusting the beam direction.
Yuang Wang, Jun Yi, Yuzheng Zhao, Hongqiang Wang, Bin Deng, Qi Yang   +5 more
doaj   +1 more source

Analog Tensor Processing With Carbon Nanotube In‐Memory Matrix Multiplications for Edge Computer Vision Acceleration

Advanced Materials, EarlyView.
This work prototypes a carbon nanotube‐based analog tensor core that performs in‐memory, parallel visual processing. Integrating non‐volatile memories and compact circuits, the core enables high‐speed analog matrix multiplications and can demonstrate accurate three dimensional (3D) spatial transformation and edge detection. With lightweight design, the
Jingfang Pei, Lekai Song, Songwei Liu, Yingyi Wen, Yaoqiang Zhou, Yang Liu, Pengyu Liu, Wenyu Cui, Xin Lu, Teng Ma, Zegao Wang, Guohua Hu   +11 more
wiley   +1 more source

Fractal Models for SAR images [PDF]

, 2011
In this thesis the modeling of SAR (Synthetic Aperture Radar) images of natural surfaces described via fractal models is dealt with. A complete theoretical forward model linking the parameters describing the scene observed by the sensor to the stochastic
Zinno, Ivana
core   +1 more source