Results 31 to 40 of about 77,866 (296)

A data-adaptive network design for the regional gravity field modelling using spherical radial basis functions

Geodesy and Geodynamics
A high-precision regional gravity field model is significant in various geodesy applications. In the field of modelling regional gravity fields, the spherical radial basis functions (SRBFs) approach has recently gained widespread attention, while the ...
Fang Zhang, Huanling Liu, Hanjiang Wen
doaj   +1 more source

A critical approach to the concept of a polar, low-altitude LARES satellite [PDF]

, 2002
According to very recent developments of the LARES mission, which would be devoted to the measurement of the general relativistic Lense--Thirring effect in the gravitational field of the Earth with Satellite Laser Ranging, it seems that the LARES ...
Ciufolini I, Ciufolini I, Iorio L, Iorio L, Iorio L, Kaula W M, Lemoine F G, Lense J, Lorenzo Iorio, Lucchesi D, Lucchesi D   +10 more
core   +3 more sources

High-data-quality, high-precision and millimeter-level of Satellite Laser Ranging at the repetition rate of 5 kHz Satellite Laser Ranging

地球与行星物理论评
High-precision and high-stability measurement is an essential approach for situational awareness of space targets, such as high-precision orbit determination, attitude determination, etc.
Mingliang Long, Haifeng Zhang, Zhibo Wu, Zhulong Huang, Huarong Deng, Si Qin, Yutao Huang, Fangteng Zhou, Guoxin Zhang, Zhongping Zhang   +9 more
doaj   +1 more source

The Design Concept of the First Mobile Satellite Laser Ranging System (ARGO-M) in Korea [PDF]

Journal of Astronomy and Space Sciences, 2011
Korea Astronomy and Space Science Institute (KASI) launched the development project of two satellite laser ranging (SLR) systems in early 2008 after the government fund approval of the SLR systems in 2007.
Jung Hyun Jo, In Kwan Park, Hyung-Chul Lim, Yoon-Kyoung Seo, Hong-Seo Yim, Jin-Young Lee, Seung-Cheol Bang, Jakyoung Nah, Kwang Dong Kim, Jeong Gyun Jang, Bi Ho Jang, Jang Hyun Park, Jong-Uk Park   +12 more
doaj   +1 more source

Testing General Relativity with Satellite Laser Ranging: Recent Developments [PDF]

, 2002
In this paper the most recent developments in testing General Relativity in the gravitational field of the Earth with the technique of Satellite Laser Ranging are presented.
Anderson, Ciufolini, Ciufolini, Ciufolini, Ciufolini, Ciufolini, Ciufolini, De Sitter, Iorio, Iorio, Iorio, Iorio, Iorio, Iorio, Iorio, Iorio, Iorio, Iorio, Iorio, Iorio, Iorio, Iorio, Khriplovich, L. Iorio, Lucchesi, Lucchesi, Mashhoon, Pavlis, Pavlis, Ries, Ruggiero, Schiff, Will, Williams, Zhang, Zhou   +35 more
core   +6 more sources

Satellite Laser Ranging in Egypt

NRIAG Journal of Astronomy and Geophysics, 2015
AbstractThe paper concerns on the satellite laser ranging (SLR) in Egypt. The three generations which can be loosely defined by their single shot root mean square precision, are discussed. The laser generators used at the Helwan half automatic and full automatic stations are described.
Ibrahim, Makram, Hanna, Y.S., Samwel, S.W., Hegazy, Maroof A.   +3 more
openaire   +1 more source

Analysis of the Results Determining the Positions and Velocities of Satellite Laser Ranging Stations during Earthquakes in 2010–2011

Remote Sensing, 2023
This paper presents an analysis of the results determining the positions and the velocities of the 21 selected satellite laser ranging stations which performed observations from January 2008 to December 2012.
Stanisław Schillak, Agnieszka Satarowska, Dominik Sankowski, Piotr Michałek   +3 more
doaj   +1 more source

Lasers for coherent optical satellite links with large dynamics

, 2013
We present the experimental realization of a laser system for ground to satellite optical Doppler ranging at the atmospheric turbulence limit. Such a system needs to display good frequency stability (a few parts in 10^{-14}) whilst allowing large and ...
Acef, Ouali, Chiodo, Nicola, Clairon, Andre, Djerroud, Khelifa, Wolf, Peter   +4 more
core   +3 more sources

HORIZONTAL POSITION OPTIMAL SOLUTION DETERMINATION FOR THE SATELLITE LASER RANGING SLOPE MODEL [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
According to the Gaussian-fit laser echo model and the terrain slope model, the regular mean value theorem and the asymptotic principle of the median point of the double integral mean value theorem are used to derive the optimal solution for the ...
Y. Wang, Y. Ai, Y. Hu, R. Wang
doaj   +1 more source

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

Advanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek, Jakub Hurník, Miroslav Šmíd, Ondřej Zobač, Melanie Todt, Daniel Koutný   +5 more
wiley   +1 more source