匍匐
发表于 2025-3-26 23:00:31
S. Somers MB,ChB (Sheffield), FRCPCication. The paper focuses on the analysis of the technology of a broadband UHF quadrifilar helix antenna. Also the paper explores the implementation method of broadband quadrifilar helix antennas by theoretical research and electromagnetic model analysis. We achieve the goal that VSWR is less than
书法
发表于 2025-3-27 01:25:19
https://doi.org/10.1007/978-3-642-55831-3gation and positioning services. Under the condition of the existence of multiple constellations, the number of observable satellite number will increase sharply in single epoch. Because of the limitation of computing source, too much redundant information brought by redundant satellites can not gre
背带
发表于 2025-3-27 05:25:21
Interventional Radiology of the Ureter, precise positioning. However, with increasing distance between the rover and the reference receivers, the decorrelation of the atmospheric errors will make it more and more difficult to fix the ambiguities quickly. Recent studies show that PPP using the raw observables by estimating the ionospheric
circuit
发表于 2025-3-27 13:13:14
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badinage
发表于 2025-3-27 14:59:08
Yoshikatsu Ueda,Yomei Tokuda,Hiroshi Goto distribution is also an important factor of GEO satellites orbit determination. Firstly, the basic principle of geometry orbit determination is introduced and the observation equation is linearized in this paper. Secondly, The GDOP value is parameterized by using orthogonal trigonometric functions.
mettlesome
发表于 2025-3-27 19:57:22
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人类学家
发表于 2025-3-28 01:06:16
https://doi.org/10.1007/978-4-431-55848-4ocally generated clean replica of the transmitted signal, interferometric processing consists of the measurement of the complex cross-correlation between the direct and reflected signals. It allows the exploitation of P(Y) code and other civil signals to maximize the height estimation precision. Thi
Carcinoma
发表于 2025-3-28 02:37:33
https://doi.org/10.1007/978-4-431-55848-4his paper, “Chang-E One” lunar mission is used with three stages of orbiting the earth, earth-moon transfer, and around moon. A detailed analysis of feasibility of autonomous navigation using GPS, GALILEO navigation system alone and combination under sidelobe signals is given. The number of visible
四溢
发表于 2025-3-28 09:30:38
Jiadong Sun,Jingnan Liu,Xiaochun LuCollections of CSNC2015 papers.Achievements and progress of BDS.Latest studies of Global Navigation Satellite System in China.Hot topics in Global Navigation Satellite System.Includes supplementary ma
conference
发表于 2025-3-28 13:39:06
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