Results 51 to 60 of about 13,268,437 (192)

Terrestrial Ecosystem Detection Based on Deep Learning Framework and Satellite Image Geographical Information

Geoscience Data Journal, Volume 13, Issue 3, July 2026.
The proposed deep learning framework integrates ResNet‐50 and LSTM models to detect and classify terrestrial ecosystems from satellite imagery. The workflow begins with image preprocessing using bilateral, guided, and median filters to enhance image quality and preserve edges.
Liang Dong, Fan Lei, Dongliang Huang, Yuye Gong, Jide Wei, Wenjing She   +5 more
wiley   +1 more source

Built-Up Area Extraction from GF-3 SAR Data Based on a Dual-Attention Transformer Model

Remote Sensing, 2022
Built-up area (BA) extraction using synthetic aperture radar (SAR) data has emerged as a potential method in urban research. Currently, typical deep-learning-based BA extractors show high false-alarm rates in the layover areas and subsurface bedrock ...
Tianyang Li, Chao Wang, Fan Wu, Hong Zhang, S. Tian, Qiaoyan Fu, Luxiong Xu   +6 more
semanticscholar   +1 more source

Эффективность компактного анализа над полем GF(3) [PDF]

, 2000
Рассмотрен метод аналитического расчета компактных оценок в случае применения порождающих полиномов над полем GF(3) для регистров сдвига с линейными обратными связями.
Дяченко, О.Н., Солодовников, С.В.   +1 more
core  

Satellite‐Based Assessment of Methane Emissions From the Darvaza Gas Crater

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract Methane is a potent greenhouse gas, and the Darvaza crater in Turkmenistan is a rare, persistent emitter. There are uncertainties regarding its formation date (either 1963 or 1971), fire ignition, and the fire's influence on methane release. Using historical Landsat imagery, we reconstruct the fire history, identifying that combustion began ...
Adriana Valverde, Itziar Irakulis‐Loitxate, Javier Gorroño, Zhipeng Pei, Javier Roger, Luis Guanter   +5 more
wiley   +1 more source

Comparing Methods for Segmenting Supra-Glacial Lakes and Surface Features in the Mount Everest Region of the Himalayas Using Chinese GaoFen-3 SAR Images

Remote Sensing, 2021
Glaciers and numerous glacial lakes that are produced by glacier melting are key indicators of climate change. Often overlooked, supra-glacial lakes develop in the melting area in the low-lying part of a glacier and appear to be highly variable in their ...
Fang Chen
semanticscholar   +1 more source

Synergetic Classification of Coastal Wetlands over the Yellow River Delta with GF-3 Full-Polarization SAR and Zhuhai-1 OHS Hyperspectral Remote Sensing

Remote Sensing, 2021
The spatial distribution of coastal wetlands affects their ecological functions. Wetland classification is a challenging task for remote sensing research due to the similarity of different wetlands.
Canran Tu, Peng Li, Zhenhong Li, Houjie Wang, Shuowen Yin, Dahui Li, Quan Zhu, M. Chang, Jie Liu, Guoyang Wang   +9 more
semanticscholar   +1 more source

Improvement and Assessment of Gaofen-3 Spotlight Mode 3-D Localization Accuracy

, 2023
The spotlight image acquired by the Gaofen-3 satellite has a resolution of 1 m, which has great potential for 3-D localization. However, there have been no public reports on the 3-D localization accuracy evaluation of Gaofen-3 spotlight synthetic ...
Zhengpeng Zhang, Nuo Chen, Yin Yang, Mingjun Deng, Di Wang   +4 more
core   +1 more source

Concurrent Variations in Air–Sea Heat Fluxes and Sea Ice Extensions Under Cold‐Air Outbreaks: The First Joint Buoy–Cruise Observational Results in the Bohai Sea

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract The air–sea interface near seasonal ice edges notably regulates the regional climate but remains poorly understood. We present the first coordinated buoy–cruise measurements in the Bohai Sea—the world's lowest‐latitude seasonal ice zone—during the winter of 2024–2025.
Yulin Lu, Xiangzhou Song, Jianxi Dong, Hongjun Su, Yunwei Yan, Xuhua Cheng, Shijian Hu, Feiyang Wang, Zhuoqi Chen, Xiao Cheng   +9 more
wiley   +1 more source

Optimized Estimation of Azimuth Cutoff for Retrieval of Significant Wave Height and Wind Speed From Polarimetric Gaofen-3 SAR Wave Mode Data

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
This study presents an innovative approach for estimating the azimuth cutoff wavelength ($\lambda _{c}$) using a multipolarization combination technique to enhance the retrieval of significant wave height (SWH) and wind speed (WS) from Gaofen-3 (GF-3 ...
Zhi Zheng, Qiushuang Yan, Chenqing Fan, Junmin Meng, Jie Zhang, Tianran Song, Weifu Sun   +6 more
semanticscholar   +1 more source

Coastal Wetland Classification with GF-3 Polarimetric SAR Imagery by Using Object-Oriented Random Forest Algorithm

Italian National Conference on Sensors, 2021
When the use of optical images is not practical due to cloud cover, Synthetic Aperture Radar (SAR) imagery is a preferred alternative for monitoring coastal wetlands because it is unaffected by weather conditions.
Xiaotong Zhang, Jia Xu, Yuanyuan Chen, K. Xu, Dongmei Wang   +4 more
semanticscholar   +1 more source