A5000247823- Ionosphere and magnetosphere dynamics
- Earthquake Detection and Analysis
- GNSS positioning and interference
- Solar and Space Plasma Dynamics
- Tropical and Extratropical Cyclones Research
- Ocean Waves and Remote Sensing
- Meteorological Phenomena and Simulations
- Geomagnetism and Paleomagnetism Studies
- Fault Detection and Control Systems
- Lightning and Electromagnetic Phenomena
- Coal Properties and Utilization
- Geomechanics and Mining Engineering
- High voltage insulation and dielectric phenomena
- Atmospheric Ozone and Climate
- Anomaly Detection Techniques and Applications
- Microwave Imaging and Scattering Analysis
- Radio Astronomy Observations and Technology
- Inertial Sensor and Navigation
- Network Security and Intrusion Detection
- Bacteriophages and microbial interactions
- Oceanographic and Atmospheric Processes
- Antimicrobial Resistance in Staphylococcus
- Advanced Electrical Measurement Techniques
- Machine Learning and Data Classification
- Advanced SAR Imaging Techniques
Hangzhou Dianzi University
2018-2025
Chinese Academy of Meteorological Sciences
2022-2024
Chinese Academy of Sciences
2022
Virginia Tech
2020
Jiangxi Agricultural University
2018
North China Institute of Science and Technology
2016
The combination of linear range walk correction and keystone transform is a good choice to focus high-resolution highly squint synthetic aperture radar (SAR) data because it an effective way remove cell migration (RCM) completely mitigate range-azimuth coupling. However, the results this kind imaging algorithm produce 2-D-variant residual RCM variant-dependence Doppler phases. To obtain high-quality SAR image, improved using azimuth-variant (RCMC) extended nonlinear chirp scaling (ENLCS)...
Abstract Interplanetary (IP) shock‐driven sudden compression of the Earth's magnetosphere produces electromagnetic disturbances in polar ionosphere. Several studies have examined effects IP shock on magnetosphere‐ionosphere coupling systems using all‐sky cameras and radars. In this study, we examine responses drivers ionosphere following an 16 June 2012. We observe vertical drift concurrent horizontal motion plasma. Observations from digisonde located at Antarctic Zhongshan station (ZHO)...
To investigate the mechanism of azalomycin F5a against methicillin-resistant Staphylococcus aureus (MRSA), conductivity MRSA suspension and adenylate kinase activity culture were determined with intervention F5a, which significantly increased compared to those blank controls. This inferred that could lead leakage cellular substances possibly by increasing permeability kill MRSA. As phospholipid bilayer was mainly responsible for cell-membrane permeability, interaction between lipids further...
Abstract Cycle slip detection and repair is one of the key factors Global Navigation Satellite System carrier phase high precision positioning. Although various methods have been proposed to detect cycle slip, they are still limited by kinds effect not ideal, especially in real‐time triple‐frequency precise positioning applications for BeiDou Systems (BDSs). Traditional only improve algorithm from level, but observation level threshold always be ignored. Research indicates that noise...
Abstract. The Wuhan mesosphere–stratosphere–troposphere (MST) radar is a 53.8 MHz monostatic Doppler radar, located in Chongyang, Hubei Province, China, and has the capability to observe dynamics of region subtropical latitudes. system an antenna array 576 Yagi antennas, maximum peak power 172 kW. MST efficient cost-effective employs more simplified flexible architecture. It includes 24 big transmitter–receiver (TR) modules, row or column data port each TR module connects small modules via...
To acquire global navigation satellite system (GNSS) signals means four-dimension acquisition of bit transition, Doppler frequency, rate, and code phase in high-dynamic weak signal environments, which needs a high computational cost. reduce the computations, this paper proposes two-step compressed method (TCAM) for post-correlation parameters estimation. Compared with fast Fourier transform (FFT) based methods, TCAM uses fewer frequency search points. In way, proposed reduces complex...
The Wuhan Ionospheric Oblique Backscatter Sounding System (WIOBSS) was applied as a bistatic radar to record the ionospheric E-region responses solar eclipse on 22 July 2009. transmitter located in and receiver Huaian. observed anomalous echoes with larger Doppler shifts at farther ranges compared reflected by Es. According simulated ray propagation paths of scattered waves, we considered that were field-aligned irregularities (FAIs). locations FAIs recorded WIOBSS estimated International...
Abstract. The Wuhan MST radar is a 53.8 MHz monostatic Doppler radar, located in Chongyang, Hubei Province, China, which has the capability to observe dynamics of mesosphere-stratosphere-troposphere region subtropical latitudes. system composed 576 Yagi antennas with square distribution, and maximum peak power 192 kW. efficient cheap, applies simplifier more flexible architecture. It includes 24 big TR modules, row/column data port each module connects small modules via corresponding feeding...
The low-altitude quasi-periodic (LQP) E-region echoes observed with the upgraded HCOPAR located in Hainan Island of China (19.5°N, 109.1°E) are presented. With interferometry technique, equations can be developed to investigate structures irregularities. results show that plasma LQP negative slope mainly drift southwestward almost horizontally, but they also drifted southeastward some striations. According movement structures, we find strong wind shear region where produced. Meanwhile,...
The super dual auroral radar network (SuperDARN) is an important tool in the remote sensing of ionospheric potential convection middle and high latitudes, also a major source elevation data detection. A reliable angle helps estimate propagation paths high-frequency radio signals between scattering spots radars, which crucial for determining target geolocation. SuperDARN uses interferometry to returned signal. However, are still underutilized owing difficulties phase difference calibration...
Abstract We present deep learning models for cross polar cap potential (CPCP) by applying multilayer perceptron (MLP) and long short‐term memory (LSTM) networks to estimate CPCP based on Super Dual Auroral Radar Network (SuperDARN) measurements. Three statistical parameters are proposed, which root‐mean‐square error (RMSE), mean absolute linear correlation coefficient (LC), validate test the measuring their performance an independent data set that was withheld from training set. In addition,...
Two types of gel were developed, by taking fly ash and foaming cement as aggregate, which is usually used filling material at the region where top-coal caves above coal entry in Jinggezhuang mine, adding high molecular polymer bio-gel additive. Sweating rates two under various matching ratio temperature tested. And then sweating water retention gels calculated, based on which, optimized ratios, determined. Viscosity indexes two-type different ratios The determined according to indexes, rate...
The low-altitude quasi-periodic (LQP) E-region echoes observed with the upgraded Hainan COherent scatter Phased Array Radar (HCOPAR) located in Island of China (19.5°N, 109.1°E) are presented. With interferometry technique, equations were developed to investigate structures irregularities. results show that plasma LQP a negative slope mainly drifted southwestward almost horizontally, but they also southeastward some striations. According movement structures, we found strong wind shear region...