A5101509752- Synthetic Aperture Radar (SAR) Applications and Techniques
- Particle accelerators and beam dynamics
- Evaluation and Optimization Models
- Advanced SAR Imaging Techniques
- Particle Accelerators and Free-Electron Lasers
- Photocathodes and Microchannel Plates
- Welding Techniques and Residual Stresses
- Magnetic confinement fusion research
- Smart Grid and Power Systems
- Radar Systems and Signal Processing
- Underwater Vehicles and Communication Systems
- Image and Object Detection Techniques
- Advanced Image and Video Retrieval Techniques
- Industrial Vision Systems and Defect Detection
- Technology Assessment and Management
- Simulation Techniques and Applications
- Evaluation Methods in Various Fields
- Structural Integrity and Reliability Analysis
- Image Retrieval and Classification Techniques
- Power System Reliability and Maintenance
- Automated Road and Building Extraction
- Optical measurement and interference techniques
- Superconducting Materials and Applications
- Environmental Quality and Pollution
- Dental Radiography and Imaging
Changchun University of Science and Technology
2024
National University of Defense Technology
2013-2023
Brookhaven National Laboratory
2020
Lanzhou University of Technology
2013-2014
Cornell University
2011
Ship surveillance is important for maritime security and safety. It plays roles in many applications including ocean environment monitoring, search rescue, anti-piracy military reconnaissance. Among various sensors used surveillance, space-borne Synthetic Aperture Radar (SAR) valued its high resolution over wide swaths all-weather working capabilities. However, the state-of-the-art algorithms ship detection identification do not always achieve a satisfactory performance. With rapid...
The Cornell University energy recovery linac (ERL) photoinjector has recently demonstrated operation at 20 mA for approximately 8 hours, utilizing a multialkali photocathode deposited on Si substrate. We describe the recipe deposition, and will detail parameters of run. Post-run analysis indicates presence significant damage to substrate, perhaps due ion back-bombardment from residual beam line gas. While exact cause substrate remains unknown, we multiple surface characterization techniques...
Many countries are making increased efforts to improve marine security and safety develop ship surveillance techniques satisfy the increasing demands. Space-borne Synthetic Aperture Radar (SAR) delivers high performance day/night all weather capabilities a space-based Automatic Identification System (AIS) can give near real time global coverage. Limited by development of sensors data processing techniques, integration space-borne SAR AIS has much offer surveillance. State-of-the-art fusion...
Ship surveillance using space-borne synthetic aperture radar (SAR), taking advantages of high resolution over wide swaths and all-weather working capability, has attracted worldwide attention. Recent activity in this field concentrated mainly on the study ship detection, but classification is largely still open. In paper, we propose a novel scheme based analytic hierarchy process (AHP) order to achieve better performance. The main idea apply AHP both feature selection decision. On one hand,...
A high-current high-brightness electron accelerator for low-energy RHIC cooling (LEReC) was successfully commissioned at Brookhaven National Laboratory. The LEReC includes a dc photoemission gun, laser system, photocathode delivery magnets, beam diagnostics, superconducting rf booster cavity, and set of normal conducting cavities to provide enough flexibility tune the in longitudinal phase space. Cooling with nonmagnetized accelerated beams requires corrections obtain small momentum spread...
This essay based on X-ray digital automatic detection as a starting point, and then to deal the typical image with median filtering histogram threshold processing, help of column gray method extract respective each weld scale curve, this tries analyze defect signal characteristics discuss extraction methods. In essay, author compiles preprocessing procedure, columns, gray-scale procedure alarm procedures; also rapid recognition prompt functions. Thorough analysis we can draw conclusion that...
Precise segmentation is crucial for the feature extraction and classification of ships in SAR imagery. To alleviate Doppler shift cross ambiguity, this paper propose to segment ship area from its background based on radon transform. Assuming that region interest (ROI) imagery has been extracted, detail procedures proposed refined can be summarized as follows. First, ship's ROI image transformed domain, which pixel intensities are cumulated along different directions. Then, peak areas...
We introduce a generalized promotion time cure model motivated by new biological consideration. The approach is flexible to heterogeneous survival data, in particular for addressing intra-sample heterogeneity.
Trading regulatory risk arises prominently in the preliminary formulation of a unified and interconnected electricity market China. Risk indices, evaluation models methods as well index weights are three important aspects comprehensive trading evaluation. In this paper, firstly, on basis current environment China, systematic indices used to quantify level established. Secondly, method developed synthesis fuzzy inference analytic hierarchy process (AHP). The set approach is employed identify...
Ship detection is significant especially with the increasing worldwide cooperation in commerce and military affairs. Space-borne Synthetic Aperture Radar (SAR) optimal for ship due to its high resolution over wide swaths all-weather working capability. Constant False Alarm Rate (CFAR) of ships SAR imagery a robust popular choice. K distribution has been widely accepted homogeneous sea clutter modeling. Although localized K-distribution based CFAR developed solve non-homogeneous problem, it...
The weapon and equipment system of systems (WESoS) construction risk analysis is great significance to enhance decision-making management level information technology WESoS construction. concept "entropy" in the engineering using calculate entropy, entropy weight used fix subjective weight, after that Combining ideal point method evaluate select schemes, best decision get. model impersonality reason, which provided a simple practical for evaluation WESoS.
Concerning the uneven distribution of energy in Chinas regional power grid, big base should be transmitted through long distance. Therefore, calculating available transfer capability (ATC) large interconnected grid is necessary. However, it difficult to collect needed data, so ATC cannot calculated directly. To solve these problems, this paper presents a decomposition calculation method calculate grid. The basic principles are: According executive partition, divided into several subsystems,...
The high-performance parallel computing (HPPC) has a better overall performance and higher productivity, for generical large-scale army equipment system of systems (AESoS) simulation, the runtime efficiency can be multiplied several tenfold to hundredfold. requirement analysis simulation framework AESoS based on HPPC was proposed. After its key techniques were discussed, Based designed. it is great significance offer certain references engineering application in fields HPPC.
Ship detection and classification with space-borne SAR has many potential applications within the maritime surveillance, fishery activity management, monitoring ship traffic, military security. While techniques imagery are well established, is still an open issue. One of main reasons may be ascribed to difficulties on acquiring required quantities real data vessels under different observation environmental conditions precise ground truth. Therefore, simulation images high scenario...
With the rapid development of sensors, technique image-guided point cloud shape completion has achieved increasing attention. Compared to single-modal techniques, cross-modal feature fusion methods can fully utilize texture images enhance analysis. This paper employs clouds boost incomplete clouds. Based on recent XMFnet, we propose a convolutional triplet attention (CTA) module improve extraction and fusion, thereby performance. Experimental results demonstrates that our method outperforms...
This paper carry out a kind of defect extraction method .Aiming at the weld image accuracy is not high and feature selection undeserved, thus affecting recognition rate lead to falsely accused miscarriage justice on this condition.Based preprocessing remove noise strengthen image, then analysis so as extract finally take marking parameter selection, in order accurately identify defect.
The equipment system of systems (ESoS) construction risk analysis is great significance to enhance decision-making and management level information technology ESoS construction. concept "entropy" in the engineering using calculate entropy, entropy weight used fix subjective weight, after that Combining ideal point method evaluate select schemes, best decision get. model impersonality reason, which provided a simple practical for evaluation electronic ESoS.