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 +7 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 ...
Shrishail Raut +5 more
doaj +7 more sources
A Novel Hybrid Approach for UT1-UTC Ultra-Short-Term Prediction Utilizing LOD Series and Sum Series of LOD and First-Order-Difference UT1-UTC [PDF]
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.
Fei Ye +4 more
doaj +4 more sources
Optimal VLBI baseline geometry for UT1-UTC Intensive observations. [PDF]
J Geod, 2021 AbstractOne of the main tasks of Very Long Baseline Interferometry (VLBI) is the rapid determination of the highly variable Earth’s rotation expressed through the difference between Universal Time UT1 and Coordinated Universal Time UTC (dUT1). For this reason, dedicated one hour, single baseline sessions, called “Intensives”, are observed on a daily ...
Schartner M +4 more
europepmc +5 more sources
Probing a southern hemisphere VLBI Intensive baseline configuration for UT1 determination [PDF]
Earth, Planets and Space, 2022 The deviation of Universal Time from atomic time, expressed as UT1−UTC, reflects the irregularities of the Earth rotation speed and is key to precise geodetic applications which depend on the transformation between celestial and terrestrial reference ...
Sigrid Böhm +8 more
doaj +2 more sources
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.
Xishun Li +8 more
doaj +2 more sources
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, Yunbin Yuan, Zhiguo Deng
doaj +4 more sources
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.
Yuguo Yang +4 more
doaj +2 more sources
High Frequency Variations of Earth Rotation Parameters from GPS and GLONASS Observations [PDF]
Sensors, 2015 The Earth’s rotation undergoes changes with the influence of geophysical factors, such as Earth’s surface fluid mass redistribution of the atmosphere, ocean and hydrology.
Erhu Wei +5 more
doaj +2 more sources
Accuracy Analysis of SINS/CNS Integrated Attitude Determination Based on Simplified Spatio-Temporal Model [PDF]
SensorsFor ground-based Celestial Navigation System/Strapdown Inertial Navigation System (CNS/SINS) integrated navigation with arcsecond-level accuracy, the current spatio-temporal transformation model involves a considerable amount of astronomical knowledge ...
Conghai Ruan +4 more
doaj +2 more sources