A5057716587- Electromagnetic wave absorption materials
- Optical measurement and interference techniques
- Advanced Antenna and Metasurface Technologies
- Software System Performance and Reliability
- Advanced Fiber Optic Sensors
- Advanced Fiber Laser Technologies
- Photonic and Optical Devices
- Metamaterials and Metasurfaces Applications
- Advanced Measurement and Metrology Techniques
- Remote Sensing and Land Use
- Grey System Theory Applications
- Optical Coherence Tomography Applications
- Semiconductor Lasers and Optical Devices
- Color perception and design
- Surface Roughness and Optical Measurements
- Cloud Computing and Resource Management
- Advanced Measurement and Detection Methods
- Electromagnetic Scattering and Analysis
- Advanced Software Engineering Methodologies
- Rough Sets and Fuzzy Logic
- Color Science and Applications
- Visual Attention and Saliency Detection
- Cognitive Functions and Memory
- Electromagnetic Simulation and Numerical Methods
- Electromagnetic Compatibility and Measurements
Harbin Engineering University
2009-2023
People's Liberation Army No. 150 Hospital
2022
Shaanxi University of Science and Technology
2020
Beijing Shijingshan Hospital
2017
PLA Army Engineering University
2011-2014
Nanjing Institute of Railway Technology
2011
Heilongjiang Institute of Technology
2009
Harbin Normal University
2009
Horological Research Institute of Light Industry
2006
China University of Geosciences
2005
In this article, we present a self-calibrated absolute thickness measurement method for opaque specimens based on fiber-optic white light interferometry. A new type of self-reference probe, which is composed fiber ferrule, an integrated beam splitter, and gradient index lens, presented. our setup, two probes kind are fixed facing each other, the distance between them can be measured. Then insert specimen measure surfaces both sides. This way, realized without traditional calibration process...
Simultaneous measurement of thickness and refractive index is an important quality control scheme in high-end fabrication. However, the precise large-range still technically difficult. In this paper, we propose a high-precision simultaneous method group using differential white light interferometry. Using bi-directional interferometer with high dynamic range, can get access to optical paths on both sides specimen. We evaluate performance proposed by measuring specimens three different...
The increasing complexity of modern distributed systems makes conventional fault tolerance and recovery prohibitively expensive. One the promising approaches is online failure prediction. However, process feature extraction depends on experienced administrators their domain knowledge to filtering compressing error events into a form that easy for In this paper, we present novel performance-centric approach automate prediction with Manifold Learning techniques. More specifically, focus...
We present a high-resolution polarization crosstalk measurement method for maintaining fiber (PMF) with considerable dispersion. The birefringence dispersion of the PMF severely degrades spatial resolution distributed measurement. Conventional compensation methods are effective modest coefficients (for instance, 0.0014 ps/nm/km). an iterative matched filter (IMF) to cope case measured coil coefficient 0.235 ps/nm/km. By applying IMF method, we obtained 0.09 m at any position (a maximum 12.36...
Composite crystals are the key component of high-power solid-state lasers. The bonding interfacial loss composite crystal slabs is a critical parameter to evaluate quality interface. A distributed method based on optical low-coherence domain reflectometry proposed measure loss. Distance-related reflecting coupling (RCL) and tilt were analyzed calibrated ensure accuracy. Yb:yttrium aluminum garnet (YAG)/YAG was measured demonstrated as an example. This solves problem that weak reflection...
Film thickness measurement can be realized using white light interferometry, but it is challenging to guarantee high precision in a large range of thicknesses. Based on scanning we propose spectral-temporal demodulation scheme for large-range measurement. The process remains unchanged either coatings or substrate-free films, while some adjustments are made according the estimated optical thickness. Experiments show that single-point repeatabilities 500 nm SiO2 coating and 68 µm Si film no...
For coping with modern thermal infrared reconnaissance, camouflage is becoming the hotspot of pattern research. Concerning traditional methods on evaluating ground can’t solve “dynamic” problem and pure technical as well scale efficiency. This article established new models to figure it out. The measure introduced time parameter construct dynamic model, then set up DEA model which supposed had variable returns scale. Through relationship among technical, we can get model. Finally, an example...
A differential optic-fiber white light interferometry for thin-film thickness measurement is proposed. By established a reference plate inside of the probe, we design new structure measuring probe and realize direct without pre-calibration system. The method insensitive to materials under test, it only need two boundaries could reflect exit from probe. proposed achieve non-contact, non-destructive self-calibration measurement. Experiment results show that (9.6-477) μm transparent opaque with...
Association rules mining is attracting much attention in research community due to its broad applications. Existing web data methods suffer the problems that 1) large number of candidate itemsets, which are hard be pruned, should pruned advance. 2) time scanning database, needed scan transactional database repeatedly, reduced. In this paper, a new association model introduced for overcoming above two problems. We develop an efficient algorithm-WARDM(Weighted Rules Data Mining) itemsets. The...
Radial gradient index (GRIN) lens is widely used in optical path measurement based on white light interferometry (WLI), yet the additional error caused by GRIN when sample under test (SUT) not at ideal position has rarely been discussed. To deal with this problem, a ray-tracing model established to reveal influence of angular tilt and axial offset SUT applied. Simulations WLI are done using parameters real lens. The results show that maximum change as larger <inline-formula...
Military camouflage is one of the critical measures taken by some key military forces to disguise weapons and facilities, projects combat fighters. Digital a novel form in this field. Preliminarily verified Edge Detection, method proposed digitize large-spot painting patterns, generate random spot-modification richer patterns.
Microwave diffraction behavior of microwave absorbing ceramics was investigated by numerical calculation, and effective electro-magnetic parameters the obtained comparing with that homogeneous material. Then, calculated results were compared medium models, aiming to investigate applicability these models. The obvious difference between pointed out, also discussed is possible reason for this difference.
Thermal infrared camouflage refers to a series of patterns for coping with modern thermal reconnaissance. In order solve the problems that subjectivity traditional evaluation methods on ground and correlation constraint is not easy test so on. The effect factors were analyzed, index system model was established, based it, dynamic DEA (data envelopment analysis) applied evaluate camouflage. example shows method in this paper can be compare DMUs (decision making units) efficiently it select best DMU.
In view of the problems in process camouflage materials research and development project quality control subjective management information is unilateral, C 2 GS model was built to improve scientific level. By establishment index system for control, on basis characteristics its all output index, output-CCR set up evaluate order further both radial direction non-radial detection, we introduced non-Archimedean infinitesimal form model. The example shows that can significantly level development,...
The extraction of major colors is the basis image processing. In process camouflage pattern painting design, whether are extracted rapidly and precisely very important to application. Histogram clustering K-means ISODATA three widely using algorithms. To test compare accuracy algorithms, definition average color difference introduced. Then, two representative forest land background images used performance result shows that, algorithm superior other kind
The impact on the spreading of unexpected emergency from subject selecting is considered, and evolution model unconventional emergency's network constructed basis two dimensions which are object event subject, so as to study network. By comparing resolving results with simulating results, feature in accordance scale-free network's characteristics founded, it means a lot for department make "Scene - In response to" control strategy.
As many influence factors and technical problems should be taken into account in the scheme selection decision of multi-band camouflage screen design, a method based on hierarchical grey relational analysis combing analytic hierarchy process (AHP) (GRA) was developed. The model constructed firstly, judging matrixes were established through process. weight value for each index which effects evaluation determined accordingly. degree between an individual alternative ideal worst are calculated...