RESEARCH PAPER
Accuracy of marine gravimetric measurements in terms of geodetic coordinates of land reference benchmark
1
Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, Poland
2
Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Poland
3
Faculty of Mechanical and Electrical Engineering, Polish Naval Academy, Poland
4
Faculty of Navigation and Naval Weapons, Polish Naval Academy, Poland
These authors had equal contribution to this work
Submission date: 2024-01-10
Final revision date: 2024-03-16
Acceptance date: 2024-05-12
Online publication date: 2024-05-15
Publication date: 2024-05-15
Corresponding author
Jerzy Pyrchla
Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Gabriela Narutowicza 11/12, 80-233, Gdansk, Poland
Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Gabriela Narutowicza 11/12, 80-233, Gdansk, Poland
HIGHLIGHTS
- Reliable pier binding is critical to the precision of marine gravity campaigns.
- GNSS static measurements are suitable for monitoring absolute gravity network points.
- Regional data about disturbances of gravity is useful for plication in ultra-precise INS.
KEYWORDS
TOPICS
Reliability modelling for maintenance of technical itemsOperation and maintenance processes for technical items
ABSTRACT
The article presents how the values of (3D) coordinates of land reference points affect the results of gravimetric measurements made from the ship in sea areas. These measurements are the basis for 3D maritime inertial navigation, improving ships' operational safety. The campaign verifying the network absolute point coordinates used as a reference point for relative marine gravity measurements was described. The obtained values were compared with catalogue values. In verification of network points 3D position the satellite data Global Satellite Navigation System (GNSS) and ground supporting systems (GBAS) was used. In this example, the height difference of the land reference point was 0.32 m. As a consequence, the offset budget of the marine campaign was affected in the range of up to 0.35 mGal. The influence on gravity free-air anomaly was not constant over the entire area covered by the campaign.
ACKNOWLEDGEMENTS
The measurement campaigns were co-financed under the projects European Union from the European Regional Development Fund under the 2014-2020:
Operational Programme Smart Growth, the project entitled "Development of technology for acquisition and exploration of gravimetric data of foreshore and seashore of Polish maritime areas" was implemented as part of the National Centre for Research and Development competition: 1/4.1.4/2018 "Application projects"
Operational Programme of the Pomeranian Voivodeship, the project entitled "Development of a multimodal platform based on the functioning of electro-optical sensors" was implemented as part of the Pomerania Development Agency competition: RPPM.01.01.01-22-0010/17 "Sub-activity 01.01.01 Expansion through innovation - grant support".
Computations were carried out using the computers of Centre of Informatics Tricity Academic Supercomputer & Network (Grant number PT01010).
The final processed dataset. DOI 10.34808/rswn-ma26
| eISSN: | 2956-3860 |
| ISSN: | 1507-2711 |
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