Results 1 to 10 of about 137,331 (82)
Impact of Tropospheric Ties on UT1‐UTC in GNSS and VLBI Integrated Solution of Intensive Sessions [PDF]
Journal of Geophysical Research: Solid Earth, 2022 AbstractVery Long Baseline Interferometry (VLBI) intensive (INT) sessions are critical for the rapid determination and densification of Universal Time 1‐Coordinate Universal Time (UT1‐UTC), which plays an important role in satellite geodesy and space exploration missions and is not predictable over longer time scales.
Harald Schuh +2 more
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Research on UT1-UTC and LOD Prediction Algorithm Based on Denoised EAM Dataset
Remote Sensing, 2023 The components of EAM are strongly correlated with LOD and play an important role in UT1-UTC and LOD prediction. However, the EAM dataset is prone to be noisy.
Yuanwei Wu, Xishun Li
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Improved Ultra-Rapid UT1-UTC Determination and Its Preliminary Impact on GNSS Satellite Ultra-Rapid Orbit Determination [PDF]
Remote Sensing, 2020 Errors in ultra-rapid UT1-UTC primarily affect the overall rotation of spatial datum expressed by GNSS (Global Navigation Satellite System) satellite ultra-rapid orbit. In terms of existing errors of traditional strategy, e.g., piecewise linear functions,
Fei Ye, Zhiguo Deng
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Geodesy and GeodynamicsAccurate ultra-short-term prediction of the Earth rotation parameters (ERP) holds paramount importance for real-time applications, particularly in reference frame conversion.
Fei Ye, Yunbin Yuan
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SensorsAccurate ultra-short-term prediction of UT1-UTC is crucial for real-time applications in high-precision reference frame conversions. Presently, traditional LS + AR and LS + MAR hybrid methods are commonly employed for UT1-UTC prediction.
Minsi Ao
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Remote Sensing, 2022 Universal time (UT1-UTC) is a key component of Earth orientation parameters (EOP), which is important for the study of monitoring the changes in the Earth’s rotation rate, climatic variation, and the characteristics of the Earth.
Tianhe Xu, Wenfeng Nie, Yuguo Yang
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Improved LOD and UT1-UTC Prediction Using Least Squares Combined with Polynomial CURVE Fitting
Remote SensingThe Length of Day (LOD) and the Universal Time (UT1) play crucial roles in satellite positioning, deep space exploration, and related fields. The primary method for predicting LOD and UT1 is least squares fitting combined with autoregressive (AR) models.
Xuhai Yang, Yuanwei Wu, Xishun Li
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Observing UT1-UTC with VGOS [PDF]
Earth, Planets and Space, 2021 We present first results for the determination of UT1-UTC using the VLBI Global Observing System (VGOS). During December 2019 through February 2020, a series of 1 h long observing sessions were performed using the VGOS stations at Ishioka in Japan and ...
Rüdiger Haas +3 more
doaj +6 more sources
Inter-Comparison of UT1-UTC from 24-Hour, Intensives, and VGOS Sessions during CONT17 [PDF]
Sensors, 2022 This work focuses on the assessment of UT1-UTC estimates from various types of sessions during the CONT17 campaign. We chose the CONT17 campaign as it provides 15 days of continuous, high-quality VLBI data from two legacy networks (S/X band), i.e ...
Harald Schuh +2 more
exaly +7 more sources
Prediction of polar motion and UT1-UTC based on the hybrid EEMD_LSTM model
Geo-Spatial Information ScienceAccurate and real-time Earth rotation parameters (ERPs) are crucial for various scientific fields, including astronomy, geoscience, and oceanography.
Wen-Bin Shen, Pengfei Zhang
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