A5101999029- Combustion and Detonation Processes
- Fire dynamics and safety research
- Energetic Materials and Combustion
- Direction-of-Arrival Estimation Techniques
- Risk and Safety Analysis
- Cryptographic Implementations and Security
- Chaos-based Image/Signal Encryption
- Speech and Audio Processing
- Advanced Combustion Engine Technologies
- Combustion and flame dynamics
- Aerosol Filtration and Electrostatic Precipitation
- Particle Dynamics in Fluid Flows
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Adaptive Filtering Techniques
- Advanced Decision-Making Techniques
- Advanced Measurement and Detection Methods
- Advanced Thermodynamics and Statistical Mechanics
- Web Data Mining and Analysis
- Recommender Systems and Techniques
- Cyclone Separators and Fluid Dynamics
- Water Quality Monitoring and Analysis
- Quantum, superfluid, helium dynamics
- Power Line Inspection Robots
- Radar Systems and Signal Processing
- Military Defense Systems Analysis
Beijing Institute of Technology
2020-2024
Northwest Normal University
2022
Jinzhou Central Hospital
2021
Yanshan University
2017
BaiCheng Normal University
2014
University of Florida
2003-2007
The University of Texas Health Science Center at Houston
2007
Local Initiatives Support Corporation
2005
Xiaomi (China)
2001
Fudan University
1994
The standard Capon beamformer (SCB) is known to have better resolution and much interference rejection capability than the data-independent when array steering vector accurately known. However, major problem of SCB that it lacks robustness in presence errors. In this paper, we will first provide a complete analysis norm constrained beamforming (NCCB) approach, which uses constraint on weight improve against errors noise. Our NCCB thorough sheds more light choice what was commonly We also...
The standard Capon beamformer (SCB) is sensitive to the mismatch between assumed and actual array steering vector, which occurs often in practice. Recently a robust (RCB) was proposed by extending SCB case of uncertain vectors. In certain applications such as acoustic imaging, it desirable that beamwidth constant across frequency bins. This prevents future corrections for different frequencies contributes consistent sound pressure level (SPL) estimation, means an wideband monopole source...
We demonstrate a novel optical asymmetric cryptosystem based on the principle of elliptical polarized light linear truncation and numerical reconstruction technique. The device an array polarizers is introduced to achieve spatially resolved polarization distribution during image encryption. This encoding process can be characterized as confusion-based cryptography that involves no Fourier lens diffusion operation. Based Jones matrix formalism, intensity transmittance for this deduced perform...
The addition of ammonia and hydrogen into natural gas fuel is an effective method to reduce carbon emissions. This study aims investigate the effect adding on mechanism combustion emission characteristics. Based a self-developed mixed deflagrate experimental platform, characteristics, chemical reaction kinetics fuels under different composition ratios (natural 0-100%, 10-85%, 0-100%) were studied. results indicate that propagation deflagration shock wave can be categorized initial stage (
This correspondence proposes efficient algorithms for approximating complex-valued and real-valued signals as a weighted sum of multiple chirplet atoms, which are characterized by four parameters, namely the scale, time, frequency, chirp rate. Direct sequential estimation parameters chirplets causes error propagations, i.e., estimated initial significantly affect parameter subsequent may result in large approximation errors. To deal with this problem, we further exploit relaxation (RELAX)...
The ignition delay time of dimethyl ether (DME), propylene oxide (PO), and their binary mixture was investigated in a shock tube under temperature conditions spanning from 830 to 1200 K, at pressures 2 5 atmospheres, with equivalence ratios 0.7/1/1.3. Zhao's DME mechanism Ramalingamd's PO were combined simulate the behavior mixture. Chemical kinetic analysis revealed that addition had significant impact on DME's times (IDTs). At low temperatures, inclusion suppressed combustion, leading an...
The standard Capon beamformer (SCB) is known to have better resolution and much interference rejection capability than the data-independent when array steering vector accurately known. However, major problem of SCB that it lacks robustness in presence errors. In this paper, we will first provide a complete analysis norm constrained (NCCB), which uses constraint on weight improve against errors noise. Our thorough sheds more light choice what was commonly We also briefly discuss our recently...
We report an asymmetric optical information hiding method based on a rotating analyzer ellipsometry technique. This architecture not only avoids the interception of keys during transmission or distribution but also makes cyphertext more inconspicuous for attackers. A new kind one-way trapdoor function is constructed fact that state polarization (SOP) elliptical polarized light cannot be recovered with knowledge intensity captured after passing through linear polarizer. Meanwhile, SOP ellipse...
Internet of Drones (IoD) is considered as a network and management architecture, which can enable unmanned aerial vehicles (UAVs) to collect data in controlled areas conduct access control for UAVs. However, the current cloud-assisted IoD scheme cannot efficiently achieve secure communication between heterogeneous cryptosystems, does not support multi-ciphertext equality tests. To improve security performance traditional schemes, we propose signcryption (HSC-MET) that supports test. In this...
In radar applications, adaptive beampatterns with low sidelobes and stable mainlobe shapes are desired to suppress pulsed deceptive jammers or sidelobe targets accurately measure the direction-of-arrival (DOA) of a target using monopulse techniques. practice, all kinds errors exist, such as signal pointing errors, array calibration covariance matrix estimation errors. presence these beamformers can suffer from severe performance degradations, including poor interference rejection, distorted...
Aiming at the problem of complicated structures and correlations in operation system-of-systems under information conditions, an evaluation method equipment's contribution rate based on complex network improved entropy is proposed. The armaments are abstracted as nodes while relationships among edges view theory. metrics determined according to tactical technical index nodes, model established. used evaluate effectiveness And corresponding built. Taking air defense anti-missile system...