Results 81 to 90 of about 13,268,437 (192)

Spatial Distribution of Lufeng Dinosaur Valley Outcrops Based on the GF‐5 Hyperspectral OS–SPA–SVM Model

Journal of Spectroscopy, Volume 2025, Issue 1, 2025.
This study presents a novel approach to identifying the spatial distribution of geological outcrops using remote sensing, with the Lufeng Dinosaur Valley in China as the focal area. We integrate GF‐5 hyperspectral imagery with the automated morphological endmember extraction–pure pixel index (AMEE–PPI) algorithm to improve endmember extraction accuracy.
Lin Hu, Yu Lu, Shu Gan, Xiping Yuan, Cheng Chen, Zhifu Zhu, K. S. V. Krishna Rao   +6 more
wiley   +1 more source

PRELIMINARY EVALUATION OF GAOFEN-3 POLARIMETRIC AND RADIOMETRIC ACCURACY BY CORNER REFLECTORS IN INNER MONGOLIA

, 2018
On August 10, 2016, China launched its first C-band full polarimetric radar satellite, named Gaofen-3 (GF-3), for urban and agriculture monitoring, landslide detection, ocean applications, etc.
L. Yan, Li, P, P. Li, J. Yang, Shi, L, Y. Chang, Chang, Y, X. Ding, Zhao, L, Ding, X, Yang, L, L. Yang, Yan, L, Yang, J, L. Shi, L. Zhao   +15 more
core   +1 more source

Multi‐Scale Soil Salinization Dynamics From Global to Pore Scale: A Review

Reviews of Geophysics, Volume 62, Issue 4, December 2024.
Abstract Soil salinization refers to the accumulation of water‐soluble salts in the upper part of the soil profile. Excessive levels of soil salinity affects crop production, soil health, and ecosystem functioning. This phenomenon threatens agriculture, food security, soil stability, and fertility leading to land degradation and loss of essential soil ...
Nima Shokri, Amirhossein Hassani, Muhammad Sahimi   +2 more
wiley   +1 more source

Geo-Positioning Accuracy Improvement of Multi-Mode GF-3 Satellite SAR Imagery Based on Error Sources Analysis

Sensors, 2018
The GaoFen-3 (GF-3) satellite is the only synthetic aperture radar (SAR) satellite in the High-Resolution Earth Observation System Project, which is the first C-band full-polarization SAR satellite in China.
Niangang Jiao, Feng Wang, Hongjian You, Xiaolan Qiu, Mudan Yang   +4 more
doaj   +1 more source

Ship target detection in SAR images based on SimAM attention YOLOv8

IET Communications, Volume 18, Issue 19, Page 1428-1436, December 2024.
1. Mitigated the uniform treatment disparity across all regions of images processed by the YOLOv8 model, and validated the effectiveness of our method through experiments. 2. The combination of a simple, parameter‐free attention module (SimAM) attention mechanism with the YOLOv8 visual model for synthetic aperture radar ship target detection ...
Yuqiao Xu, Wei Du, Lewu Deng, Yi Zhang, Wanli Wen   +4 more
wiley   +1 more source

Combined Use of GF-3 and Landsat-8 Satellite Data for Soil Moisture Retrieval over Agricultural Areas Using Artificial Neural Network

Advances in Meteorology, 2018
Soil moisture is the basic condition required for crop growth and development. Gaofen-3 (GF-3) is the first C-band synthetic-aperture radar (SAR) satellite of China, offering broad land and ocean imaging applications, including soil moisture monitoring ...
Qingyan Meng, Linlin Zhang, Qiuxia Xie, Shun Yao, Xu Chen, Ying Zhang   +5 more
doaj   +1 more source

MW‐SAM:Mangrove wetland remote sensing image segmentation network based on segment anything model

IET Image Processing, Volume 18, Issue 14, Page 4503-4513, 11 December 2024.
Mangrove wetland remote sensing image segmentation network based on segment anything model is based on the pre‐trained segment anything model and achieves cross‐domain adaptation through parameter‐efficient fine‐tuning techniques. It introduces wetland‐specific prompts, auxiliary branches, semi‐supervised training, and iterative optimization strategies
Yu Zhang, Xin Wang, Jingye Cai, Qun Yang
wiley   +1 more source

GF-3 SAR Ocean Wind Retrieval: The First View and Preliminary Assessment

Remote Sensing, 2017
Gaofen-3 (GF-3) is the first Chinese civil C-band synthetic aperture radar (SAR) launched on 10 August 2016 by the China Academy of Space Technology (CAST), which operates in 12 imaging modes with a fine spatial resolution up to 1 m.
He Wang, Jingsong Yang, Alexis Mouche, Weizeng Shao, Jianhua Zhu, Lin Ren, Chunhua Xie   +6 more
doaj   +1 more source

Remote sensing monitoring and potential distribution analysis of Spartina alterniflora in coastal zone of Guangxi

Ecology and Evolution, Volume 14, Issue 6, June 2024.
In this paper, we employed harmonic regression analysis to fit time series data of vegetation indices based on Landsat 7/8 images and achieved the mapping of Spartina alterniflora in coastal zone of Guangxi from 2009 to 2020 by combining the extracted phenological features with random forest model.
Huanmei Yao, MeiJun Chen, Zengshiqi Huang, Yi Huang, Mengsi Wang, Yin Liu   +5 more
wiley   +1 more source

Retrieval of soil moisture based on Gaofen-3 (GF-3) satellite synthetic aperture radar data over agricultural fields

浙江大学学报. 农业与生命科学版
Soil moisture is the basic condition for crop growth. A new retrieval algorithm for soil moisture was proposed based on C-band synthetic aperture radar (SAR) data from Gaofen-3 (GF-3) satellite, and soil moisture of agricultural fields with a regional scale spatial resolution of 8 m was obtained.
ZHANG Linlin, LEI Zhibin, WANG Liping, MENG Qingyan, ZENG Jiangyuan   +4 more
openaire   +1 more source