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pro vyhledávání: '"Satellite altitude"'
Akademický článek
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Autor:
Tsoulis D., Venesis C.
Publikováno v:
Journal of Geodetic Science, Vol 2, Iss 3, Pp 240-246 (2012)
The recent release of crustal digital databases, which offer in a global unified resolution the structure (geometry) and consistency (density)of a distinct number of layers stretching from the variations of the visible topography and bathymetry (oute
Externí odkaz:
https://doaj.org/article/3b8f52274e2a4d639994ab9705d44d76
Autor:
Jin-Bong Sung, Sung-Yong Hong
Publikováno v:
Remote Sensing, Vol 13, Iss 2342, p 2342 (2021)
Remote Sensing; Volume 13; Issue 12; Pages: 2342
Remote Sensing; Volume 13; Issue 12; Pages: 2342
A new method to design in-orbit synthetic aperture radar operational parameters has been implemented for the Korean Multi-purpose Satellite 6 mission. The implemented method optimizes the pulse repetition frequency when a satellite altitude changes f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9dae1f0b5512b6b12c4608a8f8e84539
https://www.mdpi.com/2072-4292/13/12/2342
https://www.mdpi.com/2072-4292/13/12/2342
Publikováno v:
South African Journal of Geology. 122:163-172
We apply a Spherical Cap Harmonic Analysis technique on CHAMP satellite data recorded over southern Africa between 2007.0 and 2009.0 epochs, and develop a Southern African Lithospheric Magnetic Model (SALMM) at satellite altitude. The comparative eva
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4fab4af05b30978edb31c00053d445f
https://doi.org/10.25131/sajg.122.0012
https://doi.org/10.25131/sajg.122.0012
Autor:
Mioara Mandea, Erwan Thébault, Hagay Amit, Aude Chambodut, Diana Saturnino, Ingo Wardinski, Benoit Langlais
Publikováno v:
Earth, Planets and Space, Vol 72, Iss 1, Pp 1-22 (2020)
Earth Planets and Space
Earth Planets and Space, 2020, 72 (1), ⟨10.1186/s40623-020-01254-7⟩
Earth Planets and Space, Springer/Terra Scientific Publishing Company, 2020, 72 (1), ⟨10.1186/s40623-020-01254-7⟩
Earth Planets and Space
Earth Planets and Space, 2020, 72 (1), ⟨10.1186/s40623-020-01254-7⟩
Earth Planets and Space, Springer/Terra Scientific Publishing Company, 2020, 72 (1), ⟨10.1186/s40623-020-01254-7⟩
Observations of the geomagnetic field taken at Earth's surface and at satellite altitude were combined to construct continuous models of the geomagnetic field and its secular variation from 1957 to 2020. From these parent models, we derive candidate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a48c806a6dc903dd18cbfcd4664434a8
https://doi.org/10.21203/rs.3.rs-26497/v2
https://doi.org/10.21203/rs.3.rs-26497/v2
Autor:
Khan Talha, Mehrnaz Afshang
Publikováno v:
ICC
A Non-terrestrial Network (NTN) comprising Low Earth Orbit (LEO) satellites can enable connectivity to underserved areas, thus complementing existing telecom networks. The high-speed satellite motion poses several challenges at the physical layer suc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c09d85acdaf66d18c38f9ec573df4ebb
https://doi.org/10.1109/icc40277.2020.9148880
https://doi.org/10.1109/icc40277.2020.9148880
Publikováno v:
2020 IEEE Aerospace Conference.
The image quality of very high-resolution optical satellites (VHROS) is affected by several factors, including optics, detector, pointing accuracy errors, attitude stability errors, and altitude variations. Though providing low noise and improved lig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c4d3e7e085afaf56ae8073fdca6f2d7
https://doi.org/10.1109/aero47225.2020.9172704
https://doi.org/10.1109/aero47225.2020.9172704
Autor:
Weichen Feng
Publikováno v:
Journal of Physics: Conference Series. 1952:032050
Aiming at the difficulty of separating the ionospheric delay error in the user pseudoring observations of a single-frequency receiver, this paper proposes an error separation method based on BP neural network. The receiver’s observation data for a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec9b5b8e27d8b008f7ac6c3f6d223169
https://doi.org/10.1088/1742-6596/1952/3/032050
https://doi.org/10.1088/1742-6596/1952/3/032050
Publikováno v:
Science China Earth Sciences. 60:1495-1506
In this article, the energy balance method is used to retrieve thermospheric mass density from CHAMP satellite precise orbit determination (POD) data during 2007–2009. The retrieved thermospheric mass densities are compared with those from accelero
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3b4ecae1ae87e5680072044b12629e7
https://doi.org/10.1007/s11430-016-9052-1
https://doi.org/10.1007/s11430-016-9052-1
Publikováno v:
Radio Science.
Selected original analog telemetry tapes from three of the topside-sounder satellites of theInternational Satellites for Ionospheric Studies (ISIS) program, namely Alouette 2, ISIS I, and ISIS II, wereused in an earlier project to produce more than
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70c41ee02ba7bfe19b84b3c936a7c97d
https://doi.org/10.1029/2018rs006659
https://doi.org/10.1029/2018rs006659