Results 11 to 20 of about 685,124 (213)

A Robust InSAR Phase Unwrapping Method via Phase Gradient Estimation Network

Remote Sensing, 2021
Phase unwrapping is a critical step in synthetic aperture radar interferometry (InSAR) data processing chains. In almost all phase unwrapping methods, estimating the phase gradient according to the phase continuity assumption (PGE-PCA) is an essential ...
Liming Pu, Xiaoling Zhang, Zenan Zhou, Liang Li, Liming Zhou, Jun Shi, Shunjun Wei   +6 more
doaj   +1 more source

A strategy to introduce multi-gradient structures into iron by explosive shock wave processing

Journal of Materials Research and Technology, 2023
A strategy combining shock-induced phase transition, twins, and dislocations to produce a multi-gradient structure in Fe is designed and proposed by the explosive processing method. A specific emulsion explosive is designed to introduce gradient pressure
Jianian Hu, Yongsheng Jia, Xiang Chen, Jian Zhang, Quanming Xie, Yingkang Yao   +5 more
doaj   +1 more source

Achieving Directive Radiation and Broadband Microwave Absorption by an Anisotropic Metasurface

IEEE Access, 2019
Simultaneously integrating electromagnetic absorption and wavefront-shaping into a single metasurface with flat and low profile is crucial for many practical applications both in science and engineering community. Here, by introducing lossy components to
Jun Sun, Ke Chen, Guowen Ding, Wenlong Guo, Junming Zhao, Yijun Feng, Tian Jiang   +6 more
doaj   +1 more source

Evaluation of InSAR and TomoSAR for Monitoring Deformations Caused by Mining in a Mountainous Area with High Resolution Satellite-Based SAR

Remote Sensing, 2014
Interferometric Synthetic Aperture Radar (InSAR) and Differential Interferometric Synthetic Aperture Radar (DInSAR) have shown numerous applications for subsidence monitoring.
Donglie Liu, Yunfeng Shao, Zhenguo Liu, Björn Riedel, Andrew Sowter, Wolfgang Niemeier, Zhengfu Bian   +6 more
doaj   +1 more source

Adaptive Square-Root Unscented Kalman Filter Phase Unwrapping with Modified Phase Gradient Estimation

Remote Sensing, 2022
Phase unwrapping (PU) is a key program in data processing in the interferometric synthetic aperture radar (InSAR) technique, and its accuracy directly affects the quality of final SAR data products.
Yansuo Zhang, Shubi Zhang, Yandong Gao, Shijin Li, Yikun Jia, Minggeng Li   +5 more
doaj   +1 more source

Multi-Beam Metasurface Antenna by Combining Phase Gradients and Coding Sequences

IEEE Access, 2019
In this paper, we propose a strategy to achieve a single-feed multi-beam metasurface antenna by combining phase gradient and coding sequence. Theoretically, the multi-beam antennas with various far-field patterns can be realized via superimposing ...
He Wang, Yongfeng Li, Hongya Chen, Yajuan Han, Sai Sui, Ya Fan, Zetian Yang, Jiafu Wang, Jieqiu Zhang, Shaobo Qu, Qiang Cheng   +10 more
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Understanding of Wood Anomalies in Metallic Gratings From Phase Gradient Metasurfaces

Frontiers in Materials, 2022
Phase-gradient metasurfaces (PGMs) have provided unprecedented opportunities for manipulating light. Here, we reexamine ordinary and well-studied subwavelength metallic gratings (OMGs) from the concept of PGMs to provide more insight into their ...
Jiaqi Quan, Qingjia Zhou, Yanyan Cao, Yadong Xu, Yadong Xu   +4 more
doaj   +1 more source

Autonomous division and integration of anonymous agents by using interaction between oscillators

Nihon Kikai Gakkai ronbunshu, 2017
In this paper, we proposed a system in which robot swarms autonomously divide or merge themselves according to phase gradients emerged by coupled oscillators.
Shunya YAMASHITA, Daisuke KURABAYASHI, Yuya HATTORI   +2 more
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Positioning and Mitigating Mining-Induced Phase Gradients for InSAR Phase Unwrapping

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Interferometric synthetic aperture radar (SAR) has been widely used for deformation monitoring in mining areas. However, the nonlinear high-phase gradients caused by subsidence funnels are a major source of error in accurate measurements, as they present
Xin Tian, Xia Wu, Hanwen Yu, Mi Jiang
doaj   +1 more source

Reconfigurable High-Efficiency metadevice using Kirigami-Inspired phase gradient metasurfaces

Results in Physics, 2023
Kirigami-inspired metasurface has attracted great attention in electromagnetic (EM) wave manipulations, due to its unprecedented and tailorable structural transformations via mechanical approaches.
Huiling Luo, Yanzhao Wang, Mingzhao Wang, Chaohui Wang, Tong Liu, Xiaohui Ling, He-Xiu Xu   +6 more
doaj   +1 more source