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Dual‑domain Joint Dense Multiple Small Ship Target Detection Algorithm for Spaceborne SAR Images: 《Transactions of Nanjing University of Aeronautics and Astronautics》2024年第6期725-738,共14页JIA Peng DONG Tiancheng WANG Taoyang ZHANG Guo SHENG Qinghong LI Jun; supported by the Foundation Strengthening Fund Project(No.2021-JCJQ-JJ0251);in part by the National Natural Science Foundation of China(Nos.42301384 and 42271448)。; Ship detection via spaceborne synthetic aperture radar(SAR)has become a research hotspot.However,existing small ship detection methods based on the radar signal domain and SAR image features cannot obtain highly accur...; 关键词：synthetic aperture radar(SAR) small ship detection deep learning attention module YOLO dual‑domain joint

Segmentation-aided phase unwrapping for 3D reconstruction with airborne array-InSAR images被引量：1: 《National Science Open》2024年第5期26-35,共10页Xin Zhang Fengming Hu Feng Xu; Unmanned aerial vehicle(UAV)array InSAR is a new type of single-flight 3D SAR imaging system with the advantages of high coherence and resolution.However,due to the low altitude of the platform,the elevation ambiguity...; 关键词：3D reconstruction image segmentation phase unwrapping array-InSAR

Staring-imaging satellite pointing estimation based on sequential ISAR images: 《Chinese Journal of Aeronautics》2024年第8期261-276,共16页Canyu WANG Libing JIANG Weijun ZHONG Xiaoyuan REN Zhuang WANG; Pointing estimation for spacecraft using Inverse Synthetic Aperture Radar(ISAR)images plays a significant role in space situational awareness and surveillance.However,feature extraction and cross-range scaling of ISAR...; 关键词：Staring-imaging Agile satellite Inverse Synthetic Aperture Radar(ISAR) Pointing estimation Cross-range scaling

Data Augmentation of Ship Wakes in SAR Images Based on Improved CycleGAN: 《Journal of Shanghai Jiaotong university(Science)》2024年第4期702-711,共10页YAN Congqiang GUO Zhengyun CAI Yunze; Industry-University-Research Cooperation Fund Project of the Eighth Research Institute of China Aerospace Science and Technology Corporation(No.USCAST2021-5);Aeronautical Science Foundation of China(No.20220001057001)。; The study on ship wakes of synthetic aperture radar(SAR)images holds great importance in detecting ship targets in the ocean.In this study,we focus on the issues of low quantity and insufficient diversity in ship wake...; 关键词：synthetic aperture radar(SAR) ship wake data augmentation cycle-consistent generative adversarial network(CycleGAN) attention mechanism

An ensemble learning method to retrieve sea ice roughness from Sentinel-1 SAR images: 《Acta Oceanologica Sinica》2024年第5期78-90,共13页Pengyi Chen Zhongbiao Chen Runxia Sun Yijun He; The National Key Research and Development Program of China under contract No.2021YFC2803301;the National Natural Science Foundation of China under contract No.41977302;the National Natural Science Youth Foundation of China under contract No.41506199;the Natural Science Youth Foundation of Jiangsu Province under contrant No.BK20150905;the Science and Technology Project of China Huaneng Group Co.,Ltd.under contract No.HNKJ20-H66.; Sea ice surface roughness(SIR)affects the energy transfer between the atmosphere and the ocean,and it is also an important indicator for sea ice characteristics.To obtain a small-scale SIR with high spatial resolution...; 关键词：2-D Cauchy continuous wavelet transform(CWT) Adaboost Regression sea ice sea ice surface roughness

Density-based ship detection in SAR images:Extension to a self-similarity perspective: 《Chinese Journal of Aeronautics》2024年第3期168-180,共13页Xueqian WANG Gang LI Zhizhuo JIANG Yu LIU You HE; supported by National Key R&D Program of China(No.2021YFA0715201);in part by National Natural Science Foundation of China(Nos.61925106,62022092,and 62101303);in part by Autonomous Research Project of Department of Electronic Engineering at Tsinghua University。; Nonlocal self-similarity is an important property of Synthetic Aperture Radar(SAR)images to characterize the repetitiveness of features embodied by SAR images within nonlocal areas and has been used for enhancement of...; 关键词：Ship detection Synthetic aperture radar(SAR) DENSITY SELF-SIMILARITY HISTOGRAM

Strip segmentation of oceanic internal waves in SAR images based on TransUNet: 《Acta Oceanologica Sinica》2023年第10期67-74,共8页Kaituo Qi Hongsheng Zhang Jiaojiao Lu Yinggang Zheng Zhouhao Zhang; The National Natural Science Foundation of China under contract No.51679132;the Science and Technology Commission of Shanghai Municipality under contract Nos.21ZR1427000 and 17040501600.; The development of oceanic remote sensing artificial intelligence has made possible to obtain valuable information from amounts of massive data.Oceanic internal waves play a crucial role in oceanic activity.To obtain ...; 关键词：oceanic internal waves deep learning stripe segmentation synthetic aperture radar TransUNet

Retrieving the grounding lines of the Riiser-Larsen Ice Shelf using Sentinel-1 SAR images: 《International Journal of Digital Earth》2023年第1期2467-2486,共20页Faming Gong Kui Zhang Shujun Liu; funded by the National Natural Science Foundation of China(Grant No.42074034).; Accurately locating and studying grounding lines is essential for predicting the response of glaciers to climate change.However,it is challenging tofind grounding lines since they are subglacial features.In this study...; 关键词：ANTARCTICA ice shelf grounding line radar interferometry Sentinel-1 images

High-resolution spatio-temporal analysis of snowmelt over Antarctic Peninsula ice shelves from 2015 to 2021 using SAR images被引量：1: 《International Journal of Digital Earth》2023年第1期825-846,共22页Qi Zhu Huadong Guo Lu Zhang Dong Liang Xuting Liu Heng Zhou Yiting Gou; supported by the Joint Funds of the National Natural Science Foundation of China[grant number U2268217];National Natural Science Foundation of China[grant number 41876226];Innovative Research Program of the International Research Center of Big Data for Sustainable Development Goals[grant number CBAS2022IRP02].; Ice shelves play an essential role in the dynamics of the Antarctic ice sheet.The surface meltwater is important,as it can irreversibly weaken ice shelves by exerting additional hydrostatic pressure.Therefore,high-res...; 关键词：Surface snowmelt ice shelf sentinel-1 imagery Antarctic Peninsula high resolution

Unsupervised change detection of man-made objects using coherent and incoherent features of multi-temporal SAR images: 《Journal of Systems Engineering and Electronics》2022年第4期896-906,共11页FENG Hao WU Jianzhong ZHANG Lu LIAO Mingsheng; supported by the National Natural Science Foundation of China(41774006);the Comparative Study of Geo-environment and Geohazards in the Yangtze River Delta and the Red River Delta Project;the Shanghai Science and Technology Development Foundation(20dz1201200)。; Constrained by complex imaging mechanism and extraordinary visual appearance,change detection with synthetic aperture radar(SAR)images has been a difficult research topic,especially in urban areas.Although existing st...; 关键词：change detection multi-temporal synthetic aperture radar(SAR)data coherent and incoherent features CLUSTERING

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