Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Youtao Gao"'
Publikováno v:
International Journal of Aerospace Engineering, Vol 2023 (2023)
An on-orbit thrust estimation method of satellite based on parallel system, which can achieve high-efficiency and high-precision thrust estimation, is proposed. A complete satellite maneuvering parallel system framework is constructed. Initially, a r
Externí odkaz:
https://doaj.org/article/7d2976e74eb842c4832206f2c754d409
Publikováno v:
International Journal of Aerospace Engineering, Vol 2020 (2020)
In order to improve the autonomy of a maneuvered GEO satellite which is a member of a navigation satellite system, an integrated design method of autonomous orbit determination and autonomous control was proposed. A neural network state observer was
Externí odkaz:
https://doaj.org/article/706f75401140424a9b139536144e1b6b
Publikováno v:
International Journal of Aerospace Engineering, Vol 2017 (2017)
In order to improve the accuracy of the dynamical model used in the orbit determination of the Lagrangian navigation satellites, the nonlinear perturbations acting on Lagrangian navigation satellites are estimated by a neural network. A neural networ
Externí odkaz:
https://doaj.org/article/5367085abbd945f5879ba27334b1a109
Publikováno v:
International Journal of Aerospace Engineering, Vol 2016 (2016)
The accuracy of autonomous orbit determination of Lagrangian navigation constellation will affect the navigation accuracy for the deep space probes. Because of the special dynamical characteristics of Lagrangian navigation satellite, the error caused
Externí odkaz:
https://doaj.org/article/3ec01664bb984260bf6ca4172f7a109d
Publikováno v:
In Advances in Space Research 1 April 2022 69(7):2883-2892
Publikováno v:
In Advances in Space Research 1 September 2015 56(5):865-878
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 492:7-14
Elemental imaging plays an important role in characterizing the chemical and physical properties of large samples. In this work, a position-sensitive technique using prompt gamma ray neutron activation analysis (PGNAA) was applied to image the intern
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7936ea5e266ab1b83e6d4acec4b5a6d
https://doi.org/10.1016/j.nimb.2021.01.014
https://doi.org/10.1016/j.nimb.2021.01.014
Publikováno v:
Advances in Space Research. 67:1733-1742
The right ascension of the ascending node is unobservable if only the inter-satellite ranging is used for autonomous orbit determination (AOD) of an Earth navigation constellation. However, if an Earth-Moon libration point satellite is added to the E
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ac4db7de7b9629cea9e1d30b5c42d2e
https://doi.org/10.1016/j.asr.2020.12.020
https://doi.org/10.1016/j.asr.2020.12.020
Publikováno v:
Journal of Physics: Conference Series. 2447:012001
X-ray communication based on X-ray spectrum modulation information is a novel communication method, which can effectively improve communication ability and anti-interference ability. In this paper, four characteristic X-rays are chosen to modulate in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79fbb188800cedfb4dbc181f1353097a
https://doi.org/10.1088/1742-6596/2447/1/012001
https://doi.org/10.1088/1742-6596/2447/1/012001
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 327:477-483
As an excellent tool, neutron generators have been used widely in prompt gamma-ray neutron activation analysis (PGNAA) technology. In this work, a new PGNAA laboratory was proposed to equip a D–T neutron generator. For safety reasons, radiation shi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a0d897eabd7493e085d25a99f932500
https://doi.org/10.1007/s10967-020-07510-0
https://doi.org/10.1007/s10967-020-07510-0