Results 41 to 50 of about 75,657 (271)

Overview of the GF‐7 Laser Altimeter System Mission

open access: yesEarth and Space Science, 2020
The Gao Fen 7 (GF‐7) satellite is China's first submeter, high‐resolution Earth observation and remote sensing satellite for natural resource monitoring, land surveying, and other industrial applications in China.
Xinming Tang   +7 more
doaj   +1 more source

Design and Data Processing of China's First Spaceborne Laser Altimeter System for Earth Observation: GaoFen-7

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
The GaoFen-7 (GF-7) satellite, which was launched on November 3, 2019, is China's first civilian submeter stereo mapping satellite. The satellite is equipped with the first laser altimeter officially in China for earth observation.
Junfeng Xie   +11 more
doaj   +1 more source

POINTING BIAS CALIBRATION OF GAOFEN-7 LASER ALTIMETER BASED ON SINGLE LASER FOOTPRINT IMAGE [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
The GaoFen-7 (GF-7) satellite is successfully launched on November 3, 2019, and its laser altimeter system is officially and firstly employed as the main payload for earth observations in China, which includes two sets of laser altimeters and laser ...
J. Xie   +7 more
doaj   +1 more source

Measurements of Antenna Surface for a Millimeter-Wave Space Radio Telescope II; Metal Mesh Surface for Large Deployable Reflector [PDF]

open access: yes, 2012
Large deployable antennas with a mesh surface woven by fine metal wires are an important technology for communications satellites and space radio telescopes.
Kamegai, Kazuhisa, Tsuboi, Masato
core   +1 more source

Batch extraction method of building height based on GF-7 satellite images

open access: yes, 2023
Abstract Building information extraction is an important work content of digital city construction, and the extraction of building height information is important for applications such as urban and rural construction, geographic information update, urban change monitoring, urban cluster development planning, urban 3D modeling, and smart city ...
YAO Yukai   +5 more
openaire   +2 more sources

A CRC usefulness assessment for adaptation layers in satellite systems [PDF]

open access: yes, 2006
This paper assesses the real usefulness of CRCs in today's satellite network-to-link adaptation layers under the lights of enhanced error control and framing techniques, focusing on the DVB-S and DVB-S2 standards.
Buret, Isabelle   +2 more
core   +1 more source

GF-7 IMAGING SIMULATION AND DSM ACCURACY ESTIMATE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
GF-7 satellite is a two-line-array stereo imaging satellite for surveying and mapping which will be launched in 2018. Its resolution is about 0.8 meter at subastral point corresponding to a 20 km width of cloth, and the viewing angle of its ...
Q. Yue, X. Tang, X. Gao
doaj   +1 more source

Control System Design Technique and Validation for A High-Resolution Mapping Satellite [PDF]

open access: yesE3S Web of Conferences, 2021
With the rapid development of the national economy, the digital city and smart city have become the development trends of China’s urbanization, proposing higher and higher requirements for earth mapping.
Chao Chen   +3 more
doaj   +1 more source

Renormalization of electron self-energies via their interaction with spin excitations: A first-principles investigation [PDF]

open access: yes, 2014
Access to magnetic excitation spectra of single atoms deposited on surfaces is nowadays possible by means of low-temperature inelastic scanning tunneling spectroscopy.
Costa, Antonio T.   +3 more
core   +2 more sources

An Introduction to the Chinese High-Resolution Earth Observation System: Gaofen-1~7 Civilian Satellites

open access: yesJournal of Remote Sensing, 2022
The Chinese High-resolution Earth Observation System (CHEOS) program has successfully launched 7 civilian satellites since 2010. These satellites are named by Gaofen (meaning high resolution in Chinese, hereafter noted as GF).
Liangfu Chen   +12 more
doaj   +1 more source

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