债务人
发表于 2025-3-21 18:41:41
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认识
发表于 2025-3-21 22:03:22
Radioaktive Elemente: Actinoidey. The 3-D orbit overlap accuracy of IGSO and MEO satellites has been improved by using the estimated PCO parameters, achieving an improvement of 17.7% and 20.0%, respectively. In addition, with the estimated PCO parameters, the precision of station coordinates PPP reaches 7.44 mm and 14.01 mm in th
perpetual
发表于 2025-3-22 01:52:05
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enterprise
发表于 2025-3-22 05:35:14
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Exposition
发表于 2025-3-22 11:45:36
Statistik und Okonomie der Leuchtfarben, and the orbit accuracy of broadcast ephemeris of different satellites is improved by 20%–80%. ABC-BP NN has higher accuracy than BP NN, and the results of 3 and 5 days of different orbit types show that it has better ability to control error accumulation, and has better error compensation results f
粘土
发表于 2025-3-22 15:25:53
https://doi.org/10.1007/978-3-663-07570-7and about 1.4 cm in U direction. The convergence time is about 15 min. The BDS-2/BDS-3 ISB is within ± 10 ns, and the long- and short-term changes are stable, depending on the receiver type. Considering the ISB between BDS-2/BDS-3 systems can help improve positioning accuracy and convergence speed.
粘土
发表于 2025-3-22 20:48:55
https://doi.org/10.1007/978-3-663-07570-7tellation has become a direction that could not be ignored in various fields in recent years. Based on GNSS technology, this paper studied the theoretical method and achievable accuracy of precise orbit determination and time synchronization of LEO constellation. On this basis, the degraded backup e
轮流
发表于 2025-3-22 23:35:47
https://doi.org/10.1007/978-3-663-07570-7 stations, and the polar coordinate accuracy is better than the case of introducing BDS-3 ISL. Based on 10 Chinese stations, the RMS of polar X, Y coordinate and LOD with BDS-3 ISL are 16.3 μas, 39.8 μas, 7.9 μs, respectively. The contribution of BDS-3 ISL is more pronounced than that of 72 LEO sate
反叛者
发表于 2025-3-23 04:32:41
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Insul岛
发表于 2025-3-23 07:42:52
https://doi.org/10.1007/978-3-663-07570-7orbit precision. Two weeks of onboard BDS-3 observation were used to assess the BDS-based POD performance. For HY-2D satellite based on BDS-3 instruments, the capability of continuous tracking is at the global level, and almost all the epochs can have 5–7 usable BDS satellites. The mean root-mean-sq