Zhong Yang

National University of Defense Technology

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Zhenzhong Yu

Jinling Institute of Technology

Yan Zhang

Chongqing University of Technology

Haifei Si

Harbin Engineering University

Xiaoyong Yan

Nanjing University of Posts and Telecommunications

Xingliu Hu

Jinling Institute of Technology

Guoshu Zhao

Nankai University

Yu Liu

Changhai Hospital

Yizhi Wang

National University of Defense Technology

Aiguo Song

State Key Laboratory of Digital Medical Engineering

Yuehong Wang

Central South University

Cooperative Institutions

Jinling Institute of Technology

Nanjing University of Science and Technology

Nanjing University of Aeronautics and Astronautics

Southeast University

National University of Defense Technology

Chinese Academy of Sciences

Tsinghua University

China University of Mining and Technology

Zhejiang University

Central South University

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An improved multihop-based localization algorithm for wireless sensor network using learning approach

Computers & Electrical Engineering (2015)

Xiaoyong Yan Aiguo Song Zhong Yang Wankou Yang

Beacon

Adaptability

10.1016/j.compeleceng.2015.03.029

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Citations (28)

Physical Insights Into Cylindrical Illusion Device With Isotropic and Homogeneous Materials

IEEE Access (2020)

Zhenzhong Yu Zhong Yang Yan Zhang Xingliu Hu Yizhi Wang

The cylindrical illusion device with isotropic and homogeneous materials is studied deeply based on the Mie scattering theory. The formula for illusion of core-shell structure is derived in the quasistatic approximation. Whether the inner core is a dielectric or PEC material, it can be equivalent to a certain target cylinder after wrapping a properly designed shell. We investigate what range of permittivity of the shell may be possible to achieve a target, which can provide convenient and intuitive design charts for an approximate design a core-shell illusion device. It is found that the number for the thickness of the shell is zero, one or two when the permittivities of the target and the shell take a variety of parameters. Moreover, the physical insights into the parameters' distribution are explained by analyzing the electric dipole moments in each part of the core-shell structure. It is interesting to see that a double negative material can be equivalently achieved by a PEC core coated with a positive magnetic material, which may offer a new design approach for the realization of double negative materials. The scattering widths and full-wave simulations are given to verify correctness of the proposed method.

Realization (probability)

10.1109/access.2020.2968169

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Citations (2)

Optimized design for illusion device by genetic algorithm

Scientific Reports (2021)

Zhenzhong Yu Zhong Yang Yan Zhang Yizhi Wang Xingliu Hu

Abstract The illusion device developed from the scattering cancellation employs very simple homogeneous and isotropic materials, but this device is only valid for electrically small objects. In this paper, we prove that the illusion device optimized by genetic algorithm can be applied to large-scale occasions. For an electrically small target, an optimized core–shell illusion device can achieve better illusion effect than the analytical design based on the scattering cancellation. With the increase of the device size, the ability of the single-layered shell to manipulate the scattering is very limited. For a moderate-size target, two optimized multi-layered examples are presented: one is to make a dielectric cylinder appear as another dielectric target, and the other is to make a conducting cylinder behave like a double-negative-material target. The full-wave simulations are carried out to visualize the similar field distributions of the target and the optimized multi-layered design. This optimized design greatly widens the size application range of the illusion device and can also improve the illusion performance with simple material parameters.

10.1038/s41598-021-99055-9

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Citations (2)

Two-Layer Network Configuration Optimization Approach Considering Primary And Backup Paths

Boyang Diao Luohao Tang Zhong Yang Xiang Fu Zhuoting Yu

10.1109/bigdia63733.2024.10808278

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Citations (0)

Reliability and Separability Analysis of Integrated GPS/BDS System

Lecture notes in electrical engineering (2016)

Youlong Wu Jinling Wang Zhong Yang Ling Yang Gang Sun

Satellite constellation

Orbit (dynamics)

Medium Earth orbit

Navigation System

10.1007/978-981-10-0937-2_14

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Citations (2)

Fuzzy Predictive Control of Wind Turbine Systems Via Singular Perturbation Theory

E3S Web of Conferences (2018)

Yan Zhang Zhong Yang Haifei Si

In this paper, the maximum power point tracking problem of variable-speed wind turbine systems is studied. The mechanical and electromagnetic dynamics of the wind turbine systems are both taken into account. Since the electromagnetic parts change much faster than the turbine part, the whole system is modeled in two time scales base on singular perturbation theory. And a T-S fuzzy model predictive control strategy is then developed. The controller is validated with a wind turbine simulator. The results have shown better performance in comparison with existing controllers.

10.1051/e3sconf/20187201008

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Citations (1)

Incremental Localization Algorithm Based on Regularized Iteratively Reweighted Least Square

Foundations of Computing and Decision Sciences (2016)

Xiaoyong Yan Zhong Yang Yu Liu Xiaoduo Xu Huijun Li

Abstract Incremental localization algorithm is a distributed localization method with excellent characteristics for wireless network. However, its estimated result is generally influenced by the heteroscedasticity arising from cumulative errors and the collineation among anchor nodes. We have proposed a novel incremental localization algorithm with consideration to cumulative errors and collinearity among anchors. Using iteratively reweighted and regularized method, the algorithm reduces the influences of errors accumulation and avoids collinearity problem between anchors. Simulation experiment results show that compared with the previous incremental localization algorithms, the proposed algorithm obtains a localization solution which not only has high accuracy but also high stability. Therefore, the proposed algorithm is suitable for different deployment environments and has high adaptability.

Collinearity

10.1515/fcds-2016-0011

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Citations (5)

Artificial Bee Colony Particle Filtering Algorithm for Integrated Navigation

Lecture notes in electrical engineering (2021)

Shanshan Gu Zhong Yang Weina Chen Yizhi Wang

Degeneracy (biology)

Position (finance)

Particle (ecology)

10.1007/978-981-15-8155-7_317

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Citations (0)

Compressed Sensing for THz FMCW Radar 3D Imaging

Complexity (2021)

Shanshan Gu Guangrong Xi Lingyu Ge Zhong Yang Yizhi Wang

A terahertz (THz) frequency‐modulated continuous wave (FMCW) imaging radar system is developed for high‐resolution 3D imaging recently. Aiming at the problems of long data acquisition periods and large sample sizes for the developed imaging system, an algorithm based on compressed sensing is proposed for THz FMCW radar 3D imaging in this paper. Firstly, the FMCW radar signal model is built, and the conventional range migration algorithm is introduced for THz FMCW radar imaging. Then, compressed sensing is extended for THz FMCW radar 3D imaging, and the Newton smooth L0‐norm (NSL0) algorithm is presented for sparse measurement data reconstruction. Both simulation and measurement experiments demonstrate the feasibility of reconstructing THz images from measurements even at the sparsity rate of 20%.

Continuous wave

10.1155/2021/5576782

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Citations (10)

Optimized cloaks made of near-zero materials for different-sized concealed targets

Scientific Reports (2018)

Zhenzhong Yu Zhong Yang Yuehong Wang Haifei Si Guoshu Zhao

The optimized cloaking design for conducting cylinders of different sizes is studied based on the Mie scattering theory. We construct a concentric multi-layered cloak made of alternating materials with isotropic dielectrics and epsilon-near-zero (ENZ) material, the thickness of which can be determined through genetic algorithm. As the radius of the conducting cylinder increases, high order scattering contributions are becoming evident, and more layers are needed. The scattering cross sections of three different radii of PEC cylinders are minimized by utilizing different numbers of multi-layers respectively. We find that eight or less optimized layers can cancel most of the scattering from a conducting cylinder with its dimension compared to wavelength, and more effectively when taking the ENZ material as the inner starting shell. The frequency dependence of total scattering is also studied, leading to the result that the bandwidth decreases as the size of concealed PEC cylinder increases. Furthermore, it is shown that the cloaking efficiency is less sensitive to the permittivity and thickness of the ENZ material, due to the small phase variation in the ENZ material. The multi-layered cloak designed for a PEC target can also be used to evidently reduce the scattering of a dielectric core and design a multi-layered elliptical cloak.

Cloak

Cloaking

Beamwidth

10.1038/s41598-018-34771-3

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Citations (6)