Results 81 to 90 of about 61,795 (173)

DVB-RCS return link radio resource management for broadband satellite systems using fade mitigation techniques at ka band [PDF]

, 2008
Current Broadband Satellite systems supporting DVB-RCS at Ku band have static physical layer in order not to complicate their implementation. However at Ka band frequencies and above an adaptive physical layer wherein the physical layer parameters are ...
Laurent Castanet, Bousquet, Michel, Jose Radzik, Michel Bousquet, Aroumont, Anbazhagan, Radzik, José, Anbazhagan Aroumont, Castanet, Laurent   +7 more
core   +1 more source

A hybrid CNN–transformer network for cloud detection in multi-source Chinese high-resolution remote sensing imagery

GIScience & Remote Sensing
Cloud detection in high-resolution optical remote sensing imagery plays a crucial role in the preprocessing pipeline, directly determining the quality and usability of data for downstream applications.
Xin Li, Lei Lei, Xiujuan Li, XingXing Zhang, YaoZhi Jiang, YiZhu Zhu, Hua Wu   +6 more
doaj   +1 more source

Multi-Mode GF-3 Satellite Image Geometric Accuracy Verification Using the RPC Model

Sensors, 2017
The GaoFen-3 (GF-3) satellite is the first C-band multi-polarization synthetic aperture radar (SAR) imaging satellite with a resolution up to 1 m in China.
Taoyang Wang, Guo Zhang, Lei Yu, Ruishan Zhao, Mingjun Deng, Kai Xu   +5 more
doaj   +1 more source

Rapid Methane Flux Estimation Combining MethaneSAT and Sentinel‐5P Observations: A Case Study of Turkmenistan

Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract Rapid estimation of high‐resolution (∼km), regional‐scale (∼104 km2) CH4 fluxes plays a critical role in supporting the Global Methane Pledge and guiding targeted mitigation strategies. This study presents a novel method that combines XCH4 observations from MethaneSAT and Sentinel‐5P to directly estimate CH4 fluxes without relying on chemical ...
Yiyang Huang, Ge Han, Jinchun Yi, Tianqi Shi, Yichi Zhang, Haotian Luo, Huiqin Mao, Siwei Li, Feiyue Mao, Wei Gong   +9 more
wiley   +1 more source

A virtual coastal band-driven optimization-based bathymetric approach (VOBA) for optically shallow water with multispectral imagery

GIScience & Remote Sensing
Bathymetry mapping is important for detecting underwater topography. For optically shallow waters, the use of satellite-based high-spatial-resolution imagery (Such as Gaofen-2, Ziyuan-3, Worldview-2) and historical medium-spatial-resolution imagery ...
Yongming Liu, Shilin Tang, Bin Cao, Zhantang Xu, Xulong Liu, Kai Zeng, Yuye Huang, Wendi Zheng   +7 more
doaj   +1 more source

Polarimetric Calibration and Quality Assessment of the GF-3 Satellite Images

Sensors, 2018
The GaoFen-3 (GF-3) satellite is the first fully polarimetric synthetic aperture radar (SAR) satellite designed for civil use in China. The satellite operates in the C-band and has 12 imaging modes for various applications.
Yonglei Chang, Pingxiang Li, Jie Yang, Jinqi Zhao, Lingli Zhao, Lei Shi   +5 more
doaj   +1 more source

Retrieval of Significant Wave Height in Coastal Seas of China from GaoFen-3 Satellites Based on Deep Learning

Remote Sensing
The acquisition of significant wave height (SWH) in coastal seas is significantly important to human activities. The Gaofen-3 (GF-3) satellites, comprising GF-3, GF-3B and GF-3C, are independently developed operational SAR of China, capable of providing high-precision, high-resolution, multi-polarization coastal ocean wave observations.
Fengjia Sun, Xing Li, Xiao-Ming Li, Yongzheng Ren, Ke Wu   +4 more
openaire   +1 more source

Quantifying the Lifespan of 3D Flood Structures: Unlocking the Potential of Flood Detention Areas for Enhanced Flood Control in China

Water Resources Research, Volume 61, Issue 11, November 2025.
Abstract The escalating frequency and magnitude of floods pose significant challenges to traditional flood control measures with fixed defense capacities, such as levees, dams, and reservoirs. Flood Detention Areas (FDAs) have been widely implemented in many countries as solutions to extreme flood events, functioning by temporarily holding excess ...
Yiling Lin, Xie Hu, Fang Wang, Qiuhong Tang, Yong Zhao, Yongsheng Li, Tao Li, Changjun Liu, Xiekang Wang, Dongfeng Li   +9 more
wiley   +1 more source

Asymmetry of Cyclonic Sea Surface Wind and Wave Observed by SAR

Geophysical Research Letters, Volume 52, Issue 17, 16 September 2025.
Abstract CyclObs‐derived wind and SWH field are extracted from over 600 dual‐polarized Sentinel‐1 (S‐1) images of around 300 tropical cyclones (TCs) over the past eight years to investigate asymmetry of wind and wave fields during TCs. Fetch analysis and machine learning technique, eXtreme Gradient Boosting (XGBoost), is used to establish a ...
Weizeng Shao, Yuyi Hu, Qingping Zou, Maurizio Migliaccio, Xingwei Jiang   +4 more
wiley   +1 more source

PRELIMINARY GAOFEN-3 INSAR DEM ACCURACY ANALYSIS

, 2018
GF-3 satellite, the first C band and full-polarization SAR satellite of China with spatial resolution of 1 m, was successfully launched in August 2016.
X. Zhang, T. Li, X. Gao, Q. Chen, X. Tang   +4 more
core   +1 more source