A5100660388- Adaptive optics and wavefront sensing
- Optical Polarization and Ellipsometry
- Advanced optical system design
- Optical Systems and Laser Technology
- Infrared Target Detection Methodologies
- Optical Coatings and Gratings
- Optical Wireless Communication Technologies
- Calibration and Measurement Techniques
- Optical measurement and interference techniques
- Advanced Measurement and Detection Methods
- Oil Spill Detection and Mitigation
- Marine and coastal ecosystems
- Advanced Image Fusion Techniques
- Toxic Organic Pollutants Impact
- Advanced Image Processing Techniques
- Advanced Optical Sensing Technologies
- Optical Coherence Tomography Applications
- Surface Roughness and Optical Measurements
- Infrared Thermography in Medicine
- Video Surveillance and Tracking Methods
- Image Enhancement Techniques
- Optical and Acousto-Optic Technologies
- Near-Field Optical Microscopy
- Face recognition and analysis
- Computer Graphics and Visualization Techniques
Changchun University of Science and Technology
2016-2025
State Key Laboratory on Integrated Optoelectronics
2023
ORCID
2021
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...
Polarized remote sensing imaging has attracted more attention in recent years due to its wider detection information dimension compared traditional methods. However, the inherent instrument errors optical systems can lead polarization state of incident and outgoing light, which is aberration system, resulting a decrease accuracy. We propose simplification calculation method for planar symmetric systems, by what only three ray samples are needed obtain distribution aberrations within pupil....
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...
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...
Freeform surfaces have the advantage of balancing off-axis aberration. In this paper, based on framework nodal aberration theory (NAT) applied to coaxial system, third-order astigmatism and coma wave expressions an system with Zernike polynomial are derived. The relationship between surface shape acting distributions is revealed. properties freeform analyzed validated by using full-field displays (FFDs). It has been demonstrated that adding terms, up nine, modifies locations, but field...
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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...
A Gaussian random-phase screen (GRPS) model is proposed to represent the low-frequency wave-front deformation in inter-satellite laser-communication links. The used investigate mutual-alignment errors comprising pointing and tracking caused by deformation. Theoretical analysis numerical simulation show that GRPS root-mean-square (RMS) value, error, error increase with amplitude factor a scale length sg model. expectation of RMS increases form linear function cubic sg. expectations expected...
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...
To address the problem of slit limitation in traditional imaging spectrometers, which hampers fast identification, efficient tracking, and precise avoidance faint targets lunar orbit, this article proposes a lenslet-array integral field spectrometer structure that is free slits, static, for visible-to-near-infrared wavelength band. Firstly, view segmentation model analyzed, requirement telecentric degree pre-imaging system obtained. Secondly, influence aberrations, such as spherical...
Owing to the wide application of freeform surfaces in off-axis optical systems with large apertures, fields view, and long focus distances, polarization effects caused by non-rotationally symmetrical have a significant impact on system’s imaging quality measurement accuracy. In this study, considering problem aforementioned effects, aberration analysis method based Jones notation using fringe Zernike polynomials surface is proposed. A full-field model symmetric reflection system constructed....
A pupil modulator is a useful tool to improve the resolution of an optical imaging system beyond classical diffraction limit. However, when this technology used in large-aperture telescopic system, field view (FOV) with good superresolution (SR) quality significantly smaller than designed FOV baseline system. In paper, we investigate influence various aberrations on SR properties using low sidelobe five-ring pure phase modulator. On basis, propose optimal design method for wide and uniform...
Superresolution (SR) imaging technology based on compression coding has always been considered as the key to break through geometric resolution of detector. In addition factors such reconstruction algorithm and mounting platform vibrations, impact inherent errors in optical system itself results SR is also obvious. To address this issue, a study design influence alignment was conducted. The digital micro-mirror device (DMD) for long-wave infrared wavelength completed, an athermal analysis...
According to the requirements for broadband simultaneous polarization high-resolution imaging, a divided-aperture super-resolution imaging system based on reflective free-form surface optical and digital micro-mirror device is proposed. It has advantages of wide working wavelength band, multiple states, single detector, high resolution lightweight. The aberration correction principle design optimization method structure this are given. Wassermann-Wolf theory further developed, differential...
Aiming at the problem that traditional design methods make it difficult to control polarization aberration distribution of optical systems quickly and accurately, this study proposes an automatic optimization method for based on deep learning. The unsupervised training model ray tracing polarized was constructed by learning reference lens structural feature data from library, generalization ability neural network improved achieve system. results show system structure optimized is close in...
The traditional window of high-speed aircraft is hemispherical, and the aberration produced by such a constant. However, hemispherical difficult to meet requirements high speed flight aircraft. Aspheric windows are usually used replace increase aerodynamic performance. aspheric will introduce dynamic aberrations that fluctuate with change scanning field-of-view (FOV), which becomes key issue development optoelectronic imaging systems for For ellipsoidal optical system FOV ±60°, an correction...
With its benefits of efficiency and speed, the orthogonal experimental design method is currently often employed in many domains for multi-factor design. In this study, wind–wave–flow multifunctional flume was used to replicate surge circumstances using technique order investigate contributing factors their interactions on sea surface IR characteristics underwater vehicles’ wakes. According correlation analysis, height swell temperature difference wake had only a weak negative correlation,...
In this paper, infrared polarization detection information acquisition technology is proposed, and the characteristics of oil spills are modeled studied. A set long-wave equipment for designed built, modeling research on spill carried out to accurately detect identify types faster processing events. Oil accuracy increased by defining maintenance method optical system reducing measurement error brought imaging system. As a result, higher than 3% contrast exists between degree image corrected...