A5041781181- Ultrasonics and Acoustic Wave Propagation
- Advanced SAR Imaging Techniques
- Geophysical Methods and Applications
- Image and Signal Denoising Methods
- Wireless Power Transfer Systems
- Occupational Health and Safety Research
- Machine Fault Diagnosis Techniques
- Evaluation Methods in Various Fields
- Microwave Imaging and Scattering Analysis
- Multilevel Inverters and Converters
- Advanced DC-DC Converters
- Human-Automation Interaction and Safety
Xidian University
2021-2022
University of Virginia
2014
Institute of Economics
2014
In complex electromagnetic environments, wideband interference (WBI) may severely affect the imaging quality of synthetic aperture radar (SAR). Because it occupies a large bandwidth, which overlaps with target echoes, WBI is difficult to mitigate. The existing suppression methods based on filtering or transform-domain analysis usually suffer from model mismatch. To tackle this problem, method combining instantaneous frequency (IF) estimation and regularized time-frequency (RTFF) proposed for...
In the current complex electromagnetic environment, imaging quality of synthetic aperture radar (SAR) may be severely degraded by wideband interference (WBI), which occupies a wide frequency band overlapping with SAR system, leading to great difficulties in WBI suppression. To address this problem, we propose method based on masked second-order multisynchrosqueezing transform (MSST2) effectively extract from corrupted data. First, echo is characterized time-frequency (TF) domain short-time...
To evaluate motion sensing technologies capable of collecting data that supports the analysis workers in manufacturing environments, we developed a procedure to categorize processes and many technologies. Processes were decomposed into: resolution movements, amount noise, detection difficulty; sensors sensitivity, noise-cancellation capability, capability. By analyzing each sensor alternative checking if it provided required functionality level performance, able select combinations for...
A novel multi-output architecture combining LLC resonant topology and Dual Active Bridge (DAB) topologies is proposed in this paper. The traits of converter are high power density, no cross-regulation issue reduced usage copper. a well-known achieving wide operation range with efficiency. DAB also features low component stress, few output filter components, ZVS operation. Proposed not only integrates the merits DAB, but eliminates issues such as loss at light load. Novel structure its system...
Power industry as an important means of primary energy consumption, occupies position in coal consumption and pollutant emissions, causes a great impact on the environment.It is particularly to define environmental costs while Environmental account for heavy weight total cost generating after introduction Clean Development Mechanism (CDM) This paper analyzes composition its calculation methods, three equivalent pricing methods scope were proposed, there are Government pricing, market...
In the complex electromagnetic environment, imaging quality of synthetic aperture radar (SAR) will be severely degraded by wideband interference (WBI). It is difficult to mitigate WBI due its wide frequency band. To address this problem, we propose a method based on synchroextracting transform (SET). First, WBI-corrupted SAR echo transformed into time-frequency (TF) domain short-time Fourier (STFT). Then detected in TF thresholding and mask for generated. Next, operator (SEO) calculated SET...
The wideband interferences (WBIs) seriously degrade the quality of synthetic aperture radar (SAR) image. Since WBI occupies a larger bandwidth, it is difficult to mitigate it. Some existing mitigation methods based on transform-domain analysis or filter design suffer from model mismatch and signal loss. In order solve this problem, method instantaneous frequency (IF) estimation intrinsic chirp component decomposition (ICCD) proposed suppress in paper. First, WBI-contaminated SAR echo...