A5041831230- Integrated Circuits and Semiconductor Failure Analysis
- GNSS positioning and interference
- Inertial Sensor and Navigation
- VLSI and Analog Circuit Testing
- Innovative Microfluidic and Catalytic Techniques Innovation
- Concrete Corrosion and Durability
- Concrete and Cement Materials Research
- Corrosion Behavior and Inhibition
- Advanced Frequency and Time Standards
- Energy Load and Power Forecasting
- Photorefractive and Nonlinear Optics
- Geophysics and Gravity Measurements
- Industrial Vision Systems and Defect Detection
- Radar Systems and Signal Processing
- Photonic and Optical Devices
- Microfluidic and Capillary Electrophoresis Applications
- Tunneling and Rock Mechanics
- Enzyme Catalysis and Immobilization
- Advanced Computational Techniques and Applications
- Advanced Fiber Laser Technologies
- Advanced machining processes and optimization
- Transition Metal Oxide Nanomaterials
- Metal-Catalyzed Oxygenation Mechanisms
- Radio Wave Propagation Studies
- Industrial Technology and Control Systems
Naval University of Engineering
2015-2025
Hubei University
2025
East China Normal University
2020-2023
Chongqing University of Posts and Telecommunications
2023
Wuhan University of Science and Technology
2023
Beijing Normal University
2023
Suzhou Municipal Hospital
2023
Nanjing Medical University
2023
Jilin Normal University
2022
Southeast University
2012-2021
Tuberculosis (TB) affects people globally and is being reconsidered as a serious public health problem in China. Reliable forecasting useful for the prevention control of TB. This study proposes hybrid model combining autoregressive integrated moving average (ARIMA) with nonlinear (NAR) neural network incidence TB from January 2007 to March 2016. Prediction performance was compared between ARIMA model. The best-fit combined an (3,1,0) × (0,1,1)12 NAR four delays 12 neurons hidden layer....
In underwater navigation systems, Global Navigation Satellite System (GNSS) information cannot be used for navigation. The mainstream method of autonomous vehicles (AUV) system is Doppler Velocity Log (DVL) aided strapdown inertial (SINS). However, because the DVL an instrument based on frequency shift to measure velocity, it easily affected by external environment. a complex environment, output polluted outliers or even interrupted. this paper, A new integrated algorithm deep learning model...
The dispersion effect of seawater can cause the envelop distortion underwater eLoran signals, which causes envelope-to-cycle difference (ECD) to exceed standard range. Furthermore, it results in incorrect cycle identification and significant positioning errors. However, few studies have focused on caused by effect. In this study, we propose an accurate ECD compensation method based a variable step size least mean square (VSS-LMS) algorithm. First, systematic modeling approach was employed...
Abstract The time scale of the global navigation satellite system (GNSS) is core element for its position, and timing services. A highly stable atomic clock essential to ensure reliability GNSS scale. This study proposed a novel hybrid denoising model combining variational mode decomposition (VMD), K–L divergence, permutation entropy (PE), Savitzky–Golay (SG) filter clocks. Firstly, key parameter VMD solved efficiently by taking minimum sum divergence decomposed modes as constraint...
We demonstrate a microfluidic mixer of high mixing efficiency in fused silica substrate using femtosecond laser-induced wet etching and hydroxide-catalysis bonding method. The micromixer has three-dimensional geometry, enabling efficient based on Baker’s transformation principle. cross-sectional area the fabricated was 0.5 × mm2, significantly promotion throughput micromixer. performance micromixers evaluated by up blue yellow ink solutions with flow rate as 6 mL/min.
Abstract A simple fluorescent chemosensor, 5-(diethylamino)-2-((2-(pyrazin-2-yl) hydrazono)methyl)phenol, has been synthesized by Schiff-base condensation reaction. The chemosensor exhibited highly selective and sensitive “off-on” responses toward Al 3+ Zn 2+ but the signal of fluorescence emission varies. detection limits were found to be 2.33 × 10 −7 M for 1.68 , respectively. binding mechanisms between or ions supported Job′s, 1 H NMR, Fourier transform infrared spectra, MS experiments....
Abstract Due to the sensitivity of spaceborne atomic clock many factors, variation law satellite bias (SCB) can be regarded as a grey system. The GM (1,1) model is most classical and basic system, which has been successfully applied in SCB prediction. Moreover, improved models have proposed widely used various forecasts since was generated. However, prediction performance these not obviously compared with In view this, new come up this paper by optimising fitting initial condition. obtained...
In the in-motion alignment of a strapdown inertial navigation system (SINS), unscented Kalman filter (UKF) is usually used to solve non-linear problems. The measurement noise covariance R has direct influence on filtering results SINS. assumed follow Gaussian distribution with constant . However, these assumptions are often not realistic, neither Gaussianity nor covariance. This will degrade performance UKF. To this problem, paper proposes novel adaptive robust UKF (NARUKF). NARUKF, sliding...
Compass alignment is an important solution for the initial of strap-down inertial navigation system (SINS). Values parameters in compass circuit have a direct influence on performance alignment. The optimal differ from one SINS to another. Traditionally, these are mainly determined by experience and experiments that involves lot trial-and-error. It hard acquire or achieve To solve this problem, taking advantages genetic algorithm (GA) global searching, parallel computing robustness, GA based...
We demonstrate high-quality (intrinsic Q factor ∼2.8 × 106) racetrack microresonators fabricated on lithium niobate thin film with a free spectral range (FSR) of ∼86 pm. By integrating microelectrodes alongside the two straight arms resonator, resonance wavelength around 1550 nm can be red shifted by 92 pm when electric voltage is raised from -100 V to 100 V. The tuning spanning over full FSR are using photolithography assisted chemo-mechanical etching.
With the ongoing construction and development of enhanced long-range navigation (eLoran) system, people's needs for accuracy positioning timing (PNT) service provided by Loran system are increasing. Due to high altitude at which new eLoran transmit station will be constructed, effects elevation cannot discounted. Since existing propagation model has not systematically taken impact into account, factors have added users high-altitude areas. In this letter, groundwave transmission delay...
Accurate time synchronisation is critical in modern communication, navigation, and scientific research. In this context, the eLoran receiver, which an advanced timing device, has attracted increasing scholarly attention. This study aims to comprehensively analyse performance potential applications of systems for monitoring specifically explore relevant indices two receivers. To end, we evaluated these receivers receiving signals through both simulated empirical data conducted a regularity...