Xinzhe Yuan

Markov prior-based uniform subspace partitioning: a universal enhancement framework for hyperspectral band selection

Kang Sun, Guijun Li, Jinyong Chen, Fangfang Li et autres

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China’s GaoFen-3 Mission: A review

Zhibin Wang, Yuxiao Qin, Qingjun Zhang, Yan Li et autres

GaoFen-3 (GF-3) is China’s first civilian high-resolution synthetic aperture radar (SAR) satellite mission. Operating in the C-band, GF-3 provides full-polarization, high-resolution, and wide-swath imaging for monitoring China’s land and sea. Since its launch in 2016, GF-3 has achieved remarkable success in various …

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Research on Medical Image Segmentation Algorithm Based on a Lightweight Attention Convolutional Neural Network

Xinzhe Yuan

With the continuous development of medical imaging technology, medical image segmentation is playing an increasingly important role in clinical diagnosis and treatment planning. However, traditional deep learning methods, while ensuring segmentation accuracy, often suffer from issues such as large model size and …

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A Radial Velocity Estimation Method of Moving Ships for Spaceborne MC-ScanSAR Systems

Kuan Wang, Qingyuan Shen, Xiaoqing Wang, Xinzhe Yuan et autres

Multichannel synthetic aperture radar (MC-SAR) systems in azimuth combined with scanning mode can realize the requirements of high-resolution and ultrawide-swath SAR imaging. Since the Doppler spectrums of targets in ScanSAR are incomplete and the range of the Doppler spectrum occupied by different …

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Utilizing Gaofen-3 InSAR time series to reveal land subsidence in Beijing (China)

Yakun Han, Keren Dai, Tao Li, Zhong Lu et autres

Various applications have been achieved by Gaofen-3 images, while the time series interferometric synthetic aperture radar (TS-InSAR) analysis was rare due to the issues with baseline instability. In this study, we revealed that the primary artefacts degrading the quality of Gaofen-3 interferograms …

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An Accurate Ocean Doppler Velocity Estimation Approach for Azimuth MC-HRWS SAR System

Kuan Wang, Xiaoqing Wang, Lingxi Guo, Jian Chen et autres

In recent years, multiple synthetic aperture radar (SAR) satellites, such as Radarsat-2 and Gaofen-3 (GF-3) spaceborne SAR systems have adopted multichannel high-resolution and wide-swath (MC-HRWS) imaging technology, which can overcome the resolution and mapping width limitation of single-channel SAR. However, considering the …

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Synthetic Tropical Cyclone Generation for Risk Analysis

Norberto C. Nadal-Caraballo, Zhensheng Liu, Xinzhe Yuan, Jiaming Li et autres

Hurricanes and other tropical cyclones (TCs) are a major natural hazard that pose significant threats to countries and communities along coastlines. Understanding the spatiotemporal patterns of TCs is essential to predict the potential hazards and risk. Most of the previous TC genesis …

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First assessment of Noise-Equivalent Sigma-Zero in GF3-02 TOPSAR mode with sea surface wind speed retrieval

Junxin Yang, Lihua Zhong, Xinzhe Yuan, Xiaochen Wang et autres

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Radial Velocity Estimation Approach of Ship for Spaceborne Multichannel HRWS SAR SLC Data

Kuan Wang, Xiaoqing Wang, Lingxi Guo, Jian Chen et autres

Multichannel high-resolution and wide-swath (MC-HRWS) synthetic aperture radar (SAR) systems with digital beamforming (DBF) in azimuth can suppress Doppler ambiguity to realize HRWS SAR imaging. The imaging position deviation of the moving ship in SAR image is caused by the radial velocity, …

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Revealing the Land Subsidence Deceleration in Beijing (China) by Gaofen-3 Time Series Interferometry

Yakun Han, Tao Li, Keren Dai, Zhong Lu et autres

Revealing the land subsidence in Beijing, China, induced by the massive groundwater extraction in the past three decades, is important to mitigate the hazards and protect the residences and infrastructure. Many SAR (Synthetic Aperture Radar) datasets have been successfully applied to reveal …

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An Effective Metaheuristic Approach for Building Energy Optimization Problems

Xinzhe Yuan, Mohammad Ali Karbasforoushha, Rahmad B. Y. Syah, Mohammad Khajehzadeh et autres

Mathematical optimization can be a useful strategy for minimizing energy usage while designing low-energy buildings. To handle building energy optimization challenges, this study provides an effective hybrid technique based on the pelican optimization algorithm (POA) and the single candidate optimizer (SCO). The …

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Study on the Elimination Method of Wind Field Influence in Retrieving a Sea Surface Current Field

Xinzhe Yuan, Jian Wang, Bing Han, Xiaoqing Wang

An along-the-track interferometric synthetic aperture radar (ATI-SAR) system can estimate the radial velocity of a moving target on the ground and on a sea surface current. This acquires the interference phase by combining two composite SAR images obtained by two antennas spatially …

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