General Relativity Measurements in the Field of Earth with Laser-Ranged Satellites: State of the Art and Perspectives
Recent results of the LARASE research program in terms of model improvements and relativistic measurements are presented. In particular, the results regarding the development of new models for the non-gravitational perturbations that affect the orbit of the LAGEOS and LARES satellites are described...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-06-01
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| Series: | Universe |
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| Online Access: | https://www.mdpi.com/2218-1997/5/6/141 |
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| author | David M. Lucchesi Luciano Anselmo Massimo Bassan Carmelo Magnafico Carmen Pardini Roberto Peron Giuseppe Pucacco Massimo Visco |
| author_facet | David M. Lucchesi Luciano Anselmo Massimo Bassan Carmelo Magnafico Carmen Pardini Roberto Peron Giuseppe Pucacco Massimo Visco |
| author_sort | David M. Lucchesi |
| collection | DOAJ |
| description | Recent results of the LARASE research program in terms of model improvements and relativistic measurements are presented. In particular, the results regarding the development of new models for the non-gravitational perturbations that affect the orbit of the LAGEOS and LARES satellites are described and discussed. These are subtle and complex effects that need a deep knowledge of the structure and the physical characteristics of the satellites in order to be correctly accounted for. In the field of gravitational measurements, we present a new measurement of the relativistic Lense-Thirring precession with a <inline-formula> <math display="inline"> <semantics> <mrow> <mn>0.5</mn> <mo>%</mo> </mrow> </semantics> </math> </inline-formula> precision. In this measurement, together with the relativistic effect we also estimated two even zonal harmonics coefficients. The uncertainties of the even zonal harmonics of the gravitational field of the Earth have been responsible, until now, of the larger systematic uncertainty in the error budget of this kind of measurements. For this reason, the role of the errors related to the model used for the gravitational field of the Earth in these measurements is discussed. In particular, emphasis is given to GRACE temporal models, that strongly help to reduce this kind of systematic errors. |
| first_indexed | 2024-04-11T22:03:53Z |
| format | Article |
| id | doaj.art-2ce5ec8fb8f840c8b2f83ee0e9f8903a |
| institution | Directory Open Access Journal |
| issn | 2218-1997 |
| language | English |
| last_indexed | 2024-04-11T22:03:53Z |
| publishDate | 2019-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Universe |
| spelling | doaj.art-2ce5ec8fb8f840c8b2f83ee0e9f8903a2022-12-22T04:00:47ZengMDPI AGUniverse2218-19972019-06-015614110.3390/universe5060141universe5060141General Relativity Measurements in the Field of Earth with Laser-Ranged Satellites: State of the Art and PerspectivesDavid M. Lucchesi0Luciano Anselmo1Massimo Bassan2Carmelo Magnafico3Carmen Pardini4Roberto Peron5Giuseppe Pucacco6Massimo Visco7Istituto di Astrofisica e Planetologia Spaziali (IAPS)-Istituto Nazionale di Astrofisica (INAF), 00133 Roma, ItalyIstituto di Scienza e Tecnologie dell’Informazione (ISTI)-Consiglio Nazionale delle Ricerche, 56124 Pisa, ItalyIstituto Nazionale di Fisica Nucleare, Sezione di Roma Tor Vergata, 00133 Roma, ItalyIstituto di Astrofisica e Planetologia Spaziali (IAPS)-Istituto Nazionale di Astrofisica (INAF), 00133 Roma, ItalyIstituto di Scienza e Tecnologie dell’Informazione (ISTI)-Consiglio Nazionale delle Ricerche, 56124 Pisa, ItalyIstituto di Astrofisica e Planetologia Spaziali (IAPS)-Istituto Nazionale di Astrofisica (INAF), 00133 Roma, ItalyIstituto Nazionale di Fisica Nucleare, Sezione di Roma Tor Vergata, 00133 Roma, ItalyIstituto di Astrofisica e Planetologia Spaziali (IAPS)-Istituto Nazionale di Astrofisica (INAF), 00133 Roma, ItalyRecent results of the LARASE research program in terms of model improvements and relativistic measurements are presented. In particular, the results regarding the development of new models for the non-gravitational perturbations that affect the orbit of the LAGEOS and LARES satellites are described and discussed. These are subtle and complex effects that need a deep knowledge of the structure and the physical characteristics of the satellites in order to be correctly accounted for. In the field of gravitational measurements, we present a new measurement of the relativistic Lense-Thirring precession with a <inline-formula> <math display="inline"> <semantics> <mrow> <mn>0.5</mn> <mo>%</mo> </mrow> </semantics> </math> </inline-formula> precision. In this measurement, together with the relativistic effect we also estimated two even zonal harmonics coefficients. The uncertainties of the even zonal harmonics of the gravitational field of the Earth have been responsible, until now, of the larger systematic uncertainty in the error budget of this kind of measurements. For this reason, the role of the errors related to the model used for the gravitational field of the Earth in these measurements is discussed. In particular, emphasis is given to GRACE temporal models, that strongly help to reduce this kind of systematic errors.https://www.mdpi.com/2218-1997/5/6/141satellite laser rangingLAGEOS satellitesperturbationsmodelsgeneral relativityLense-Thirring effect |
| spellingShingle | David M. Lucchesi Luciano Anselmo Massimo Bassan Carmelo Magnafico Carmen Pardini Roberto Peron Giuseppe Pucacco Massimo Visco General Relativity Measurements in the Field of Earth with Laser-Ranged Satellites: State of the Art and Perspectives Universe satellite laser ranging LAGEOS satellites perturbations models general relativity Lense-Thirring effect |
| title | General Relativity Measurements in the Field of Earth with Laser-Ranged Satellites: State of the Art and Perspectives |
| title_full | General Relativity Measurements in the Field of Earth with Laser-Ranged Satellites: State of the Art and Perspectives |
| title_fullStr | General Relativity Measurements in the Field of Earth with Laser-Ranged Satellites: State of the Art and Perspectives |
| title_full_unstemmed | General Relativity Measurements in the Field of Earth with Laser-Ranged Satellites: State of the Art and Perspectives |
| title_short | General Relativity Measurements in the Field of Earth with Laser-Ranged Satellites: State of the Art and Perspectives |
| title_sort | general relativity measurements in the field of earth with laser ranged satellites state of the art and perspectives |
| topic | satellite laser ranging LAGEOS satellites perturbations models general relativity Lense-Thirring effect |
| url | https://www.mdpi.com/2218-1997/5/6/141 |
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