Shuhong Gong

Xidian University

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Renxian Li

Xidian University

Huan Tang

Qufu Normal University

Bing Wei

Xidian University

Igor V. Minin

National Research Tomsk State University

Oleg V. Minin

National Research Tomsk State University

F.G. Mitri

Santa Fe Institute

Jiafu Wang

Air Force Engineering University

Bojian Wei

Fuzhou University

Zhuoyuan Shi

Xidian University

Jieqiu Zhang

Southwest Medical University

Cooperative Institutions

Xidian University

Chinese Academy of Sciences

Xi'an Jiaotong University

Air Force Engineering University

University of Chinese Academy of Sciences

Beihang University

Southeast University

University of Electronic Science and Technology of China

Guangzhou University

Chinese Academy of Medical Sciences & Peking Union Medical College

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Study on the Controlled Atmospheric Refractivity Fluctuation Impairing the Imaging Quality of the Heterodyne Detection Lidar

2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) (2018)

Muyu Hou Yu Liu Shuhong Gong

Based on the principle of heterodyne detection and the array-distributed atmospheric refractivity fluctuation by a coherent acoustic, the theoretical feasibility of coherent acoustic waves affecting lidar imaging by changing the additional phase is analyzed, and the theoretical model of changing the additional phase is established. According to the theoretical model, the echo phase of the imaging radar is simulated and the adopted acoustic array. A scaling experiment is designed to verify the engineering feasibility of the controlled atmospheric refractivity fluctuation impairing the imaging quality of the heterodyne detection lidar by coherent acoustic wave effects on transmission-coherent laser imaging path. The results of this paper have important theoretical significance for the development of new methods and technologies in the field of lidar interference.

Heterodyne (poetry)

Heterodyne detection

Atmospheric models

Atmospheric optics

10.1109/isape.2018.8634270

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Citations (1)

Unusual optical phenomena inside and near a rotating sphere: the photonic hook and resonance

Optics Express (2024)

Huan Tang Zhuoyuan Shi Yuan Zhang Renxian Li Bing Wei

Based on the optical Magnus effect, the analytical expressions of the electromagnetic field that a spinning dielectric sphere illuminated by polarized plane waves are derived according to the "instantaneous rest-frame" hypothesis and Minkowski’s theory. More attention is paid to the near field. The unusual optical phenomena in mesoscale spheres without material and illumination wave asymmetry that are the photonic hook (PH) and whispering gallery mode (WGM)-like resonance caused by rotation are explored. The impact of resonance scattering on PHs is further analyzed under this framework. The influence of non-reciprocal rotating dimensionless parameter γ on PH and resonance is emphasized. The results in this paper have extensive application prospects in mesotronics, particle manipulation, resonator design, mechatronics, and planetary exploration.

Hook

10.1364/oe.518794

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Citations (2)

Improvement of Measuring Complex Dielectric Constant Based on Spatial Wave Method

Xingmin Zhang Zhao Hu Shuhong Gong

In this paper, the method of inverting the actual incident angle based on the dielectric reflector is proposed. The method is to solve the problem of excessive error between the preset incident angle and the actual incident angle based on the spatial wave method when the complex dielectric constant of the ground object is measured. Based on the Fresnel formula, the relationship between the real imaginary parts of the complex permittivity and complex reflect coefficient is derived. The method is further modified that inverting the complex permittivity by constructing the inverse proportional function. The measured results show that the use of dielectric reflector can improve greatly the accuracy and speed of inversion, which is of great significance to study the propagation characteristics of wireless channel in 5G mobile communication system.

Reflector (photography)

Fresnel equations

Reflection coefficient

10.1145/3158233.3159322

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Photonic hook formation by a partially illuminated high-index dielectric particle hemi-immersed in dielectric film

Optical Engineering (2024)

Igor V. Minin Song Zhou Huan Tang Renxian Li Bing Wei

The photonic hook (PH) generated by a partially illuminated high-index dielectric particle hemi-immersed in the dielectric film is investigated. A tunable PH is generated from a cylinder deposited on a dielectric film, and the cylinder is partially illuminated by the placement of a thin, flat aluminum mask in front of it. The effects of film type, mask width, and height of dielectric film are mainly discussed. The results provide a novel design method for PHs, which have potential applications in optical manipulation and high-resolution imaging.

Hook

Optical engineering

10.1117/1.oe.63.12.127101

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A Novel and Robust Evolution Algorithm for Optimizing Complicated Functions

arXiv (Cornell University) (2011)

Yifeng Gao Shuhong Gong Ge Zhao

In this paper, a novel mutation operator of differential evolution algorithm is proposed. A new algorithm called divergence differential evolution algorithm (DDEA) is developed by combining the new mutation operator with divergence operator and assimilation operator (divergence operator divides population, and, assimilation operator combines population), which can detect multiple solutions and robustness in noisy environment. The new algorithm is applied to optimize Michalewicz Function and to track changing of rain-induced-attenuation process. The results based on DDEA are compared with those based on Differential Evolution Algorithm (DEA). It shows that DDEA algorithm gets better results than DEA does in the same premise. The new algorithm is significant for optimizing and tracking the characteristics of MIMO (Multiple Input Multiple Output) channel at millimeter waves.

10.48550/arxiv.1108.3489

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Shared-Aperture Antennas Based on Even- and Odd-Mode Spoof Surface Plasmon Polaritons

IEEE Transactions on Antennas and Propagation (2019)

Yajuan Han Shuhong Gong Jiafu Wang Yongfeng Li Ya Fan

In this communication, we propose a method of designing shared-aperture antennas based on excitations of both even- and odd-mode spoof surface plasmon polaritons (SSPPs). The antenna consists of a feeding monopole and a tapered SSPPs structure, both of which are placed vertically on a metallic ground. Due to tilted electric vectors of the monopole in near fields, both even- and odd-mode SSPPs can be excited. Standing waves of even-mode SSPPs on the SSPPs structure will enable broadside or tilted radiation, while traveling waves of odd-mode SSPPs on the tapered end will enable endfire radiation. Therefore, such an antenna configuration can achieve broadside, tilted, and endfire radiations. As an example, a shared-aperture antenna operating in C/X /Ku-bands was designed, fabricated, and measured. Both the simulated and measured results verify that the antenna can achieve broadside radiation in 4.68-4.83 GHz, tilted radiation in 8.51-8.82 GHz, and endfire radiation in 11.00-17.38 GHz, with peak gains about 2.7, 3.5, and 6.8 dB, respectively. The antenna itself can work in multiple bands with customized radiation patterns, without using several antenna radiators and complex feeding network. This communication provides an effective method of designing shared-aperture antennas in future lightweight and multifunctional wireless communication systems.

Aperture (computer memory)

10.1109/tap.2019.2944548

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Citations (36)

Study on Rain Attenuation Based on Different Raindrop Size Distributions

2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) (2024)

Haiying Li Leke Lin Jing M. Chen Hongbo Zhang Shuhong Gong

10.1109/isape62431.2024.10840519

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Optical force on a Rayleigh particle generated by photonic jet

Optical Review (2024)

Bojian Wei Run Chen Qiang Xu Renxian Li Shuhong Gong

Optical force

Discrete dipole approximation

10.1007/s10043-023-00857-1

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OPTIMAL SCATTERING POLARIZATION CHARACTERISTIC FOR CYLINDER TARGET IN RAIN AT MILLIMETER WAVE BAND

Electromagnetic waves (2005)

Jiying Huang Shuhong Gong Fang Wang

Scattering characteristic of target in rain is studied in this paper, which calculates scattering matrix of rain area and that of cylinder target in rain, taking the effect from rain into account by substituting rain media for random media with equivalent complex permittivity. SCR (ratio of scattering signal induced by target in rain to clutter from rain) is computed, and the relation between SCR and polarization status of transmitting and receiving antennas is deduced. By optimizing the SCR, optimal polarization status of transmitting and receiving antennas are found. And, the results found in this paper are serviceable for communication system design [2, 4].

Extremely high frequency

10.2528/pier05041402

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Citations (12)

Interaction of circularly polarized light with an absorptive electromagnetic conductor sphere – Radiation force and spin torque

Results in Optics (2021)

F.G. Mitri Huan Tang Renxian Li Shuhong Gong

The concept of a perfect electromagnetic conductor (PEMC) material, which is a class of a magneto-electric metamaterial, has been recently examined in the context of the optical radiation force theory [J. Quant. Spectr. Rad. Transfer, 233 (2019) 21–28; ibid 256 (2020) 107280], with particular emphasis on the rotary polarization effect and the contribution of the cross-polarized waves to the transfer of linear momentum, assuming an illumination of linearly-polarized plane progressive waves. The present investigation shows that additional cross-interference factors, which cannot be ignored, contribute to the time-averaged optical radiation force exerted on an absorptive electromagnetic conductor (AEMC) sphere when the incident field becomes circularly-polarized. Moreover, the analysis is extended to investigate the co-polarized, cross-polarized and cross-interference components of the time-averaged optical spin radiation torque. The multipole series expansion method in spherical coordinates is utilized to derive exact mathematical partial-wave series for the co-polarized, cross-polarized and cross-interference components of the radiation force and torque based on the integration of Maxwell's radiation stress tensor and its moment over a spherical surface of large radius enclosing the sphere suspended in a lossless medium of wave propagation. Numerical results for the radiation force and spin torque efficiencies and their corresponding co-polarized, cross-polarized and cross-interference components illustrate the analysis with emphasis on the size parameter of the sphere ka, its electromagnetic admittance M as well as its imaginary part amounting to absorption. The computations are of importance from the standpoint of the fundamentals of the linear and angular momenta of circularly-polarized electromagnetic waves transferred to an AEMC and related applications in optical tweezers and particle manipulation of objects exhibiting circular dichroism.

10.1016/j.rio.2021.100128

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Citations (8)