Results 31 to 40 of about 18,442,400 (163)

Evaluation of the Emissions State of a Satellite Laser Altimeter Based on Laser Footprint Imaging

Remote Sensing, 2022
The GaoFen-7(GF-7) satellite is equipped with China’s first laser altimeter for Earth observation; it has the capability of full waveform recording, which can obtain global high-precision three-dimensional coordinates over a wide range.
Jiaqi Yao, Haoran Zhai, Shuqi Wu, Zhen Wen, Xinming Tang   +4 more
doaj   +1 more source

In‐orbit geometric calibration approach and positioning accuracy analysis for the Gaofen‐7 laser footprint camera

IET Image Processing, 2021
The Gaofen‐7 (GF‐7) satellite is China's first submeter high‐resolution optical stereo‐mapping satellite. The satellite is equipped with two area‐array laser footprint cameras to capture the laser spots emitted by laser altimeters. To accurately identify
Junfeng Xie, Chaofeng Ren, Huihui Jiao, Jianping Pan   +3 more
doaj   +1 more source

Gf(3) Ve Gf(7) Üzerindeki Yarı-Devirli Kodlar [PDF]

, 2008
Any cyclic code with n=pm length can be put into quasi-cyclic form ,where p ? 1, p,m + ? Z . In this paper, some parameters of the Quasi-Cyclic codes over GF(3) and GF(7) are obtained by using the best known cyclic codes.p, m pozitif tamsayılar ve p ?
Öke, Figen, İşcan, Hülya, Çengellenmiş, Yasemin   +2 more
core   +1 more source

Image fusion for dynamic contrast enhanced magnetic resonance imaging [PDF]

, 2004
Twellmann T, Saalbach A, Gerstung O, Leach MO, Nattkemper TW. Image fusion for dynamic contrast enhanced magnetic resonance imaging. Biomed Eng Online. 2004;3(1): 35.BACKGROUND: Multivariate imaging techniques such as dynamic contrast-enhanced magnetic ...
Nattkemper, Tim Wilhelm ; https://orcid.org/, Nattkemper Tim W, Saalbach, A, Olaf Gerstung, Gerstung, O., Leach, M.O., Twellmann Thorsten, Twellmann, Thorsten, Nattkemper, TW, Axel Saalbach, Tim W Nattkemper, Leach, Martin O, Gerstung Olaf, Twellmann, T Thorsten, Thorsten Twellmann, Gerstung, Olaf, Saalbach Axel, Saalbach, Axel, Leach Martin O, Gerstung, O, Nattkemper, T.W., Martin O Leach, Saalbach, A., Twellmann, T.   +23 more
core   +2 more sources

Panchromatic and Multispectral Image Fusion Combining GIHS, NSST, and PCA

Applied Sciences, 2023
Spatial and spectral information are essential sources of information in remote sensing applications, and the fusion of panchromatic and multispectral images effectively combines the advantages of both.
Lina Xu, Guangqi Xie, Sitong Zhou
doaj   +1 more source

Fusing China GF-5 Hyperspectral Data with GF-1, GF-2 and Sentinel-2A Multispectral Data: Which Methods Should Be Used?

, 2020
The China GaoFen-5 (GF-5) satellite sensor, which was launched in 2018, collects hyperspectral data with 330 spectral bands, a 30 m spatial resolution, and 60 km swath width.
Qian Du, Gang Yang, Weiwei Sun, Kai Ren, Xiangchao Meng   +4 more
core   +1 more source

GF-GMD/ccpp-framework: GMD-paper branch

, 2021
This is the ccpp-framework part of the GF ...
mzhangw, panll, goldy, DomHeinzeller, grantfirl, Dave Gill, Dom Heinzeller, JulieSchramm, haiqinli, Timothy Brown, Laurie Carson, tanyasmirnova, Joseph Olson, ligiabernardet, lulinxue   +14 more
core   +1 more source

Study on Fusion Algorithms of GF-2 Satellite Image

, 2020
: This paper compared 4 kinds of image fusion methods through the GF-2 panchromatic and multispectral data fusion test. The subjective qualitative evaluation and objective quantitative evaluation were applied to analyze the quality of the fusion images,
Shi, Jingjing, Wei, Wang, Zhao, Tianzhong, Xie, Shiqin   +3 more
core   +1 more source

Comparison of machine learning algorithms for mapping mango plantations based on Gaofen-1 imagery

Journal of Integrative Agriculture, 2020
Mango is a commercial crop on Hainan Island, China, that is cultivated to develop the tropical rural economy. The development of accurate and up-to-date maps of the spatial distribution of mango plantations is necessary for agricultural monitoring and ...
Hong-xia LUO, Sheng-pei DAI, Mao-fen LI, En-ping LIU, Qian ZHENG, Ying-ying HU, Xiao-ping YI   +6 more
doaj   +1 more source

A benchmark GaoFen-7 dataset for building extraction from satellite images

Scientific Data
Accurate building extraction is crucial for urban understanding, but it often requires a substantial number of building samples. While some building datasets are available for model training, there remains a lack of high-quality building datasets ...
Peimin Chen, Huabing Huang, Feng Ye, Jinying Liu, Weijia Li, Jie Wang, Zixuan Wang, Chong Liu, Ning Zhang   +8 more
doaj   +1 more source