<abstract xmlns="http://www.w3.org/1999/xhtml">

Precise positioning and navigation on the Earth’s surface and in space require accurate earth orientation parameters (EOP) data and predictions. In the last few decades, EOP prediction has become a subject of increased attention within the international geodetic community, e.g., space agencies, satellite operators, researchers studying Earth rotation dynamics, and users of navigation systems. Due to this fact, many research centres from around the world have developed dedicated methods for the forecasting of EOP. An assessment of the various EOP prediction capabilities is currently being pursued in the frame of the Second Earth Orientation Parameters Prediction Comparison Campaign (2nd EOP PCC), which began in September 2021 and will be continued until the end of the year 2022. The new campaign was prepared by the EOP PCC Office run by Centrum Badań Kosmicznych Polskiej Akademii Nauk (CBK PAN) in Warsaw, Poland, in cooperation with GeoForschungsZentrum (GFZ) and under the auspices of the International Earth Rotation and Reference Systems Service (IERS). In this paper, we provide an overview of the 2nd EOP PCC five months after its start. We discuss the technical aspects and present statistics about the participants and valid prediction files received so far. Additionally, we present the results of preliminary comparisons of different reference solutions with respect to the official IERS 14 C04 EOP series. Root mean square values for different solutions for polar motion, length of day, and precession-nutation components show discrepancies at the level from 0.04 to 0.36 mas, from 0.01 to 0.10 ms, and from 0.01 to 0.18 mas, respectively.
</abstract>

Precise positioning and navigation on the Earth’s surface and in space require accurate earth orientation parameters (EOP) data and predictions. In the last few decades, EOP prediction has become a subject of increased attention within the international geodetic community, e.g., space agencies, satellite operators, researchers studying Earth rotation dynamics, and users of navigation systems. Due to this fact, many research centres from around the world have developed dedicated methods for the forecasting of EOP. An assessment of the various EOP prediction capabilities is currently being pursued in the frame of the Second Earth Orientation Parameters Prediction Comparison Campaign (2nd EOP PCC), which began in September 2021 and will be continued until the end of the year 2022. The new campaign was prepared by the EOP PCC Office run by Centrum Badań Kosmicznych Polskiej Akademii Nauk (CBK PAN) in Warsaw, Poland, in cooperation with GeoForschungsZentrum (GFZ) and under the auspices of the International Earth Rotation and Reference Systems Service (IERS). In this paper, we provide an overview of the 2nd EOP PCC five months after its start. We discuss the technical aspects and present statistics about the participants and valid prediction files received so far. Additionally, we present the results of preliminary comparisons of different reference solutions with respect to the official IERS 14 C04 EOP series. Root mean square values for different solutions for polar motion, length of day, and precession-nutation components show discrepancies at the level from 0.04 to 0.36 mas, from 0.01 to 0.10 ms, and from 0.01 to 0.18 mas, respectively.

Second Earth Orientation Parameters Prediction Comparison Campaign (2nd EOP PCC): Overview

Artificial Satellites

This work is licensed under the Creative Commons Attribution 4.0 International License.

Second Earth Orientation Parameters Prediction Comparison Campaign (2 EOP PCC): Overview

Precise positioning and navigation on the Earth’s surface and in space require accurate earth orientation parameters (EOP) data and predictions. In the last...

Second Earth Orientation Parameters Prediction Comparison Campaign (2^nd EOP PCC): Overview

Published Online: Jan 05, 2023

Page range: 237 - 253

Received: Jun 14, 2022

Accepted: Nov 17, 2022

DOI: https://doi.org/10.2478/arsa-2022-0021

Keywords
Earth Orientation Parameters, Length-of-Day, UT1-UTC, Universal time, predictions

© 2022 Justyna Śliwińska et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Second Earth Orientation Parameters Prediction Comparison Campaign (2nd EOP PCC): Overview

Published Online: Jan 05, 2023

Page range: 237 - 253

Received: Jun 14, 2022

Accepted: Nov 17, 2022

DOI: https://doi.org/10.2478/arsa-2022-0021

KeywordsEarth Orientation Parameters, Length-of-Day, UT1-UTC, Universal time, predictions

© 2022 Justyna Śliwińska et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Second Earth Orientation Parameters Prediction Comparison Campaign (2^nd EOP PCC): Overview

Keywords
Earth Orientation Parameters, Length-of-Day, UT1-UTC, Universal time, predictions