Zhiwei Chen

ORCID: 0000-0003-4069-9680
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About
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Research Areas
  • Arctic and Antarctic ice dynamics
  • Soil Moisture and Remote Sensing
  • Infrared Target Detection Methodologies
  • Oceanographic and Atmospheric Processes
  • Calibration and Measurement Techniques
  • Synthetic Aperture Radar (SAR) Applications and Techniques
  • UAV Applications and Optimization
  • Remote Sensing and LiDAR Applications
  • Advanced Measurement and Detection Methods
  • Climate variability and models
  • Radiative Heat Transfer Studies
  • Distributed Control Multi-Agent Systems
  • Optical measurement and interference techniques
  • Ocean Waves and Remote Sensing
  • Geophysics and Gravity Measurements
  • Power Line Inspection Robots
  • Precipitation Measurement and Analysis
  • Tropical and Extratropical Cyclones Research
  • Marine and fisheries research
  • Smart Parking Systems Research
  • Control Systems in Engineering
  • Image Processing Techniques and Applications
  • Bamboo properties and applications
  • Advanced Sensor and Control Systems
  • Advanced Sensor Technologies Research

Tea Research Institute
2025

Shandong Academy of Agricultural Sciences
2025

Shandong Academy of Agricultural Machinery Sciences
2025

Huazhong University of Science and Technology
2009-2024

Harbin Engineering University
2023-2024

Ministry of Industry and Information Technology
2024

First Affiliated Hospital of Jinan University
2024

Northwestern Polytechnical University
2024

Zhejiang University
2023

CRRC (China)
2023

In mirrored aperture synthesis (MAS), the existing brightness temperature image reconstruction methods include inverse cosine transform and impulse matrix methods. However, quality of MAS images reconstructed by is still poor needs to be improved. This article proposes a method with deep convolutional neural network (CNN). The includes two fully connected (FC) layers, multiple deconvolutional which realize for MAS. uses CNN learn mapping system errors, so as improve performance...

10.1109/tgrs.2022.3157870 article EN IEEE Transactions on Geoscience and Remote Sensing 2022-01-01

A novel design is described for a circularly polarized square slot antenna (CPSSA). Circular polarization (CP) operations can be attained using lightening-shaped feedline protruded from the signal line of feeding coplanar waveguide (CPW). The CP bandwidth significantly enhanced by implanting pair inverted-L grounded strips into and adjusting dimensions feedline, whereas impedance greatly enlarged through tuning embedded vertical horizontal stubs. designed was measured to exhibit as high 48.8%.

10.1109/tap.2009.2039335 article EN IEEE Transactions on Antennas and Propagation 2010-01-08

Gravity Recovery and Climate Experiment (GRACE) satellites can effectively monitor terrestrial water storage (TWS) changes in large-scale areas. However, due to the coarse resolution of GRACE products, there is still a large number deficiencies that need be considered when investigating TWS small-scale Hence, it necessary downscale products with resolution. First, order solve this problem, present study employs modeling windows different sizes (Window Size, WS) combined multiple machine...

10.3390/rs13234760 article EN cc-by Remote Sensing 2021-11-24

This study proposes a novel method that combines multispectral data fusion strategies with chemometric analysis for the origin traceability of Rizhao green tea. The research found significant differences in sensory scores and key physicochemical components (catechins, caffeine, amino acid content) between tea from southern China. By integrating near-infrared hyperspectral technologies, prediction accuracy multivariate models (including Partial Least Squares Regression (PLSR), Support Vector...

10.1016/j.fochx.2025.102346 article EN cc-by-nc-nd Food Chemistry X 2025-03-01

Infrared small target detection technology is widely used in infrared search and tracking, precision guidance, low slow aircraft detection, other projects. Its ability very important terms of finding unknown targets as early possible, warning time, allowing for enough response time the security system. This paper combines characteristics low-resolution images studies method under a complex background based on attention mechanism. The main contents this are follows: (1) by sorting through...

10.3390/rs15235539 article EN cc-by Remote Sensing 2023-11-28

Accurate inflow turbulence wind profile is a key premise of large eddy simulation (LES) methodology for super tall buildings. This paper presents an improved method narrow band synthesis random flow generation to produce more accurate LES based on superposition harmonics. The proposed considers time correlation by adopting parameters, and expression speed spectrum energy modified integral equation used. These improvements could generate intensity the atmospheric boundary layer. A simple...

10.1080/19942060.2022.2155704 article EN cc-by Engineering Applications of Computational Fluid Mechanics 2023-01-06

Densely distributed Global Navigation Satellite System (GNSS) stations can invert the terrestrial water storage anomaly (TWSA) with high precision. However, uneven distribution of GNSS greatly limits application TWSA inversion. The purpose this study was to compensate for spatial coverage by simulating vertical deformation in unobserved grids. First, a new deep learning weight loading inversion model (DWLIM) constructed combining long short-term memory (LSTM) algorithm, inverse distance...

10.3390/rs14030535 article EN cc-by Remote Sensing 2022-01-23

Autonomous driving systems rely on a comprehensive understanding of the surrounding environment, and trees, as important roadside features, have significant impact vehicle positioning safety analysis. Existing methods use mobile LiDAR (MLS) to collect environmental information automatically generate tree inventories based dense point clouds, providing accurate geometric parameters. However, MLS requires expensive survey-grade laser scanners high-precision GNSS/IMU systems, which limits their...

10.3390/rs15205057 article EN cc-by Remote Sensing 2023-10-21

Setting two reflectors perpendicular to each other and an array produces mirrored aperture synthesis (MAS), which obtains a higher spatial resolution than (AS) for the same antenna array. The proposal of MAS theory experimental verification suggest that can be improved by setting reflector. This paper proposes method in four tilted planar are set around is named two-dimensional (2-D) with (2-D MAS-T). Because 2-D MAS-T uses more MAS, further improved. principle given this paper. relationship...

10.1109/tgrs.2022.3155473 article EN IEEE Transactions on Geoscience and Remote Sensing 2022-01-01

In this paper, the real-time deployment of unmanned aerial vehicles (UAVs) as flying base stations (BSs) for optimizing throughput mobile users is investigated UAV networks. This problem formulated a time-varying mixed-integer non-convex programming (MINP) problem, which challenging to find an optimal solution in short time with conventional optimization techniques. Hence, we propose actor-critic-based (AC-based) deep reinforcement learning (DRL) method near-optimal positions at every...

10.48550/arxiv.2002.00831 preprint EN other-oa arXiv (Cornell University) 2020-01-01

This study showcases a comprehensive treatment protocol for high-risk hepatocellular carcinoma (HCC) patients, focusing on the combined use of Y-90 transarterial radioembolization (TARE) and Programmed Cell Death-1 (PD-1) inhibitors as neoadjuvant therapy. Highlighted through case report, it offers step-by-step reference similar therapeutic interventions. A retrospective analysis was conducted patient who underwent hepatectomy following TARE PD-1 inhibitor treatment. Key demographic clinical...

10.3791/66407-v article EN 2024-05-26

In order to improve the spatial resolution of a one-dimensional aperture synthesis (1-D AS) radiometer without increasing size antenna array, method visibility extension (VE) is proposed in this article. VE method, prior information about distribution various scenes learnt by residual convolutional neural network (ResCNN). Specifically, relationship between low-frequency and that high-frequency learnt. Then, ResCNN used estimate samples from obtained AS system. Furthermore, low- are combined...

10.3390/rs15040941 article EN cc-by Remote Sensing 2023-02-08

To increase the spatial resolution of passive microwave radiometry, mirrored aperture synthesis (MAS) was presented. In this letter, method cosine visibility extension (CVE) is proposed to further enhance 1-D MAS. CVE method, a convolutional neural network (CNN) used learn distribution (CV), specifically relationship between low- and high-frequency CV distributions various scenes. Then, CVs are estimated by CNN according low-frequency obtained The high- combined in MAS image reconstruction...

10.1109/lgrs.2023.3238051 article EN IEEE Geoscience and Remote Sensing Letters 2023-01-01

The demand for high-precision sea surface temperature (SST) has been growing rapidly in recent years because SST is one of the key parameters to describe thermal state surface. This article analyzes differences between microwave remote sensing and infrared SST, including spatial resolution difference penetration depth difference. In order improve accuracy retrieved this proposes a joint inversion algorithm from combining brightness (BT) BT, which also taken influence wind speed atmosphere...

10.1109/tgrs.2022.3168984 article EN IEEE Transactions on Geoscience and Remote Sensing 2022-01-01

There are many preparation methods of porous silicon(PS), such as electrochemical etching(ECE), photochemical etching, chemical etching and so on. ECE, also known anodic is more common among these methods. A lot holes given priority to be etched on the surface silicon. The top vertical aspects easily while horizontal wall quiet different, then tree-like or sponge-like structure formed. In this paper, we obtained silicon using lithography dry method. diameter hole was 2μm 6μm. depth samples...

10.1117/12.843488 article EN Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 2009-08-24

Under the background of global warming, variation extreme low temperature events in Northwest Pacific are undergoing significant changes. The have obvious monthly, inter-annual and inter-decadal characteristics. Extreme were mainly concentrated January-March. It showed an increasing trend from 1982 to 1991, a downward 1992 2011 upward 2012 onwards. frequency has significantly reduced. number days duration single event average minimum show linear trend. two time scales cycles, with large...

10.1088/1755-1315/171/1/012027 article EN IOP Conference Series Earth and Environmental Science 2018-07-01

For SMOS data, significant errors exist in coastal areas because of the contamination by nearby land. In this paper, analysis brightness temperature (TB) data area South China Sea (SCS) reveals a decreasing trend with increase distance to coast. A TB measurement model according geophysical parameters and SMOS/MIRAS antenna array is established. The simulation shows that large within 40 km since land much warmer than ocean observed mainlobe array. Then result used for correction measured SCS....

10.1109/igarss.2016.7730999 article EN 2016-07-01
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