A5114161725- Optical Polarization and Ellipsometry
- Infrared Target Detection Methodologies
- Optical Systems and Laser Technology
- Optical Wireless Communication Technologies
- Atmospheric aerosols and clouds
- Advanced Image Fusion Techniques
- Advanced Measurement and Detection Methods
- Advanced Optical Sensing Technologies
- Calibration and Measurement Techniques
- Remote-Sensing Image Classification
- Marine and coastal ecosystems
- Photonic and Optical Devices
- Oil Spill Detection and Mitigation
- Advanced optical system design
- Remote Sensing in Agriculture
- Image Enhancement Techniques
- Toxic Organic Pollutants Impact
- Optical Coatings and Gratings
- Heavy metals in environment
- Photoacoustic and Ultrasonic Imaging
- Near-Field Optical Microscopy
- Photoreceptor and optogenetics research
- Ocular and Laser Science Research
- Orbital Angular Momentum in Optics
- Advanced Fluorescence Microscopy Techniques
Changchun University of Science and Technology
2015-2024
South China University of Technology
2023-2024
Capital Normal University
2024
State Key Laboratory on Integrated Optoelectronics
2023
Shaanxi Science and Technology Department
2023
Xi’an University of Posts and Telecommunications
2023
First Institute of Oceanography
2023
Ministry of Natural Resources
2023
Chinese Academy of Forestry
2020
Tiangong University
2017
Sea fog is a particular kind of atmospheric aerosol that often poses hidden risks to ship navigation, ocean exploration, human productivity, and life. In light the aforementioned issues, this research conducted thorough investigation polarization transmission properties in sea environment. We studied physical characteristics established polarized radiative transfer model based on RT3/PolRadtran (polarized transfer) environment theory Mie scattering. The effects wavelength, state,...
The marine environment is complex and changeable. To meet the urgent needs of accurate detection identification oil spills, a visible/infrared dual-band common-aperture polarization imaging optical system based on defocused plane detector designed. evaluated by ZEMAX simulation software, we carried out species discrimination experiment split focal detector, which proved that for some cannot be distinguished intensity information, information can distinguished. It verifies feasibility in...
Environment variation is an important factor affecting the polarization propagation through smoke. In this paper, we investigate effects of relative humidity and optical thickness on transmission character, as well persistence linear circular artificial smoke particles with simulations experiments. We develop environment modulation system to control measure degree (DOP). Correspondingly, by building relation between filling time thickness, particle size refractive index, utilize Monte Carlo...
As a new detection technology, polarization imaging is of great significance in the field target detection. At present, technology usually adopts visible light imaging. The technique difficult to image complex background due its narrow working spectrum and short distance. Therefore, based on principle full Stokes micro-polarizer array, this paper proposes multi-spectral scheme designs system penetrating haze. Conducting indoor outdoor polarized experiments. Finally, quality was assessed...
The polarised Bidirectional Reflectance Distribution Function (pBRDF) model relates the properties of target materials to polarisation information incident and reflected light. Priest–Germer (P-G) was first strictly pBRDF be officially released; however, some shortcomings remain. In this study, we analyse assumption framework P-G model, determine imperfections in framework, supplement boundary conditions for diffraction transmission effects, propose construct a pBTDF based on existing...
Infrared polarization imaging has demonstrated significant advantages in target detection and recognition natural environments. While there have been numerous research achievements on medium-wave/long-wave infrared a single band, is lack of related conclusions the characteristics wide spectral two-color imaging. To address this gap, article employs theoretical model to investigate influence temperature, incident angle, refractive index degree angle. These findings substantiated through...
Abstract The detection of faint and small targets by space-based surveillance systems is difficult owing to the long distances, low energies, high speeds, false alarm rates, algorithmic efficiencies involved in process. To improve space object help prevent collisions with critical facilities such as satellites, this study proposes an improved method for targets. proposed consists two components: star atlas preprocessing target detection. step applies multi-exposure image pyramidal weighted...
We present both simulated and experimental methods to show the propagation of linear circular polarization under a settling smoke environment. Simulations experiments were performed for artificial with typical visible wavelengths light moderate Using Monte Carlo method, we simulate particle size, refractive index, wavelength, optical length smoke. Through real-time measurement during settling, relationship environment parameters in experiment simulation is established improve delay problem...
The division of focal plane (DoFP) polarization imaging sensors, which can simultaneously acquire the target's two-dimensional spatial information and information, improves detection resolution recognition capability by capturing difference in characteristics between target background. In this paper, we propose a novel method based on deep compressed sensing (DCS) adding digital micromirror devices (DMD) to an optical system simulating transmission model reconstruct high-resolution images...
Aiming at the problem of unmanned reconfiguration and docking ground vehicles under complex working conditions, we designed a piece equipment composed an active mechanism based on six-degree-of-freedom platform locking with multi-sensors. Through proposed control method laser image sensor information fusion calculation, six-dimensional posture during process is captured in real time so as to achieve high-precision docking. Finally, effectiveness feasibility 6-DOF are verified by established...
This paper addresses the objectives in a complex context: polarization mathematical and physical model of basic components target/background is constructed by simulation modeling. The image fusion experiment carried out based on two-dimensional wavelet transformation. A high-resolution imaging instrument was developed, static experiments were with polarization, infrared, visible cameras. result shows that using detection technology to detect evidence targets backgrounds can effectively...
This paper presents a study on quadrotor unmanned aerial vehicle (UAV) fault-tolerant control scheme. According to the attitude model and safety of aircraft under uncertainty inertial matrix, state constraint by reinforcement learning is designed ensure safety. Even if boundary crossed, it can be pulled back means penalty function with learning. Meanwhile, in order inhibit oscillation caused immediate reward as usual, an adaptive update law proposed. Furthermore, considering coupled actuator...
Aiming at the shortcomings of traditional infrared polarization imaging device, such as large volume, complex structure, difficult registration, and inability to recognize moving targets, this paper proposes an method based on a micropolarizer. The long refractive wave optical system is designed achieve detection 0.25 m target 1 km; for this, design micropolarizer array suitable long-wave band proposed. In simulation analysis, effects grating substrate line material, period, duty cycle, slot...
In the field of compressed imaging, many attempts have been made to use high-resolution digital micromirror array (DMD) in combination with low-resolution detectors construct imaging systems by collecting data reconstruct images. However, difficulty achieving micrometer-level alignment between DMD devices and has resulted significant reconstruction errors. To address this issue, we proposed a joint input generative adversarial network an error correction function that simulates degradation...