无目标
发表于 2025-3-26 22:35:44
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Keratin
发表于 2025-3-27 04:38:37
Passive H-Maser (PHM) used as a primary clock on board Galileo navigation satellites. PHM ground test results are compared to the clock parameters estimated from the MGEX data. The time evolution of the relativistic effects arising from the . term of Earth’s gravity field, as well as Sun and Moon gr
坚毅
发表于 2025-3-27 09:08:28
https://doi.org/10.1007/978-3-8350-5480-6es in the modeling of solar radiation pressure map into estimated terrestrial reference frame parameters as well as into derived gravity field coefficients and altimetry results when LEO orbits are determined using GPS. Here we introduce a new approach to geometrically map radial orbit perturbations
严重伤害
发表于 2025-3-27 11:52:41
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iodides
发表于 2025-3-27 17:25:25
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Narcissist
发表于 2025-3-27 17:50:39
Reference Frame from the Combination of a LEO Satellite with GPS Constellation and Ground Network oy techniques (GPS, SLR, DORIS) in the generation of reference frame parameters. We show clear improvements in terrestrial reference frame parameters after the combination of the GPS constellation in MEO with spaceborne GPS, DORIS and SLR measurements from the Jason-2 satellite in LEO orbit, includin
Restenosis
发表于 2025-3-28 00:36:34
,Geometrical Model of the Earth’s Geocenter Based on Temporal Gravity Field Maps,gree odd coefficients (“pear-shaped”), i.e., from the C30, C50 and C70, although degree 1 gravity field coefficients are not estimated. This is because “pear-shaped” coefficients are not symmetrical with the equator like even zonnals C20, C40 and C60, and they are big enough relative to other low-de
engender
发表于 2025-3-28 02:52:29
First Phase Clocks and Frequency Transfer,can be estimated solely from the carrier-phase GPS measurements. These also allow frequency transfer with a very high level of accuracy of a few parts in 10. (≈25 ps/day in terms of linear time rate). The main motivation for the development of the phase clock approach is to avoid the colored systema
accessory
发表于 2025-3-28 09:11:55
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释放
发表于 2025-3-28 12:13:44
Kinematics of IGS Stations, a length of 777 km was processed kinematically for a period of one day. The coordinates of one station of the baseline were kept fixed (GODE) and a set of three coordinates was estimated every 30 s for the second station ALGO using carrier-phase data only.