Two‐Line Elements Based Thermospheric Mass Density Specification From Parameter Optimization of a Physics‐Based Model
Abstract Accurately estimating the mass density of the thermosphere can assist satellite operators in planning missions and optimizing satellite orbits, reducing the risk of collisions. The newly developed GOFT (Global Observation‐based Forecast for the Thermosphere) model specifies thermospheric ma...
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| Format: | Article |
| Language: | English |
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Wiley
2023-09-01
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| Series: | Space Weather |
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| Online Access: | https://doi.org/10.1029/2023SW003553 |
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| _version_ | 1841536343753097216 |
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| author | Dexin Ren Jiuhou Lei |
| author_facet | Dexin Ren Jiuhou Lei |
| author_sort | Dexin Ren |
| collection | DOAJ |
| description | Abstract Accurately estimating the mass density of the thermosphere can assist satellite operators in planning missions and optimizing satellite orbits, reducing the risk of collisions. The newly developed GOFT (Global Observation‐based Forecast for the Thermosphere) model specifies thermospheric mass density by optimizing uncertainty parameters in a physics‐based model based on model errors. This study extends the model to specify thermospheric mass density based on Two‐Line Elements (TLEs) from numerous space objects. The resulting mass density is validated against accelerometer‐derived mass density from different satellites. The comparison results revealed that assimilating TLEs into the GOFT model significantly improved the accuracy of the thermospheric mass density. In addition, the GOFT model also improved the accuracy of the electron density in the ionosphere, indicating that the assimilation capability of GOFT allows simultaneous specification of coupled ionosphere and thermosphere in future applications. |
| format | Article |
| id | doaj-art-970f4c2aa3994d38aa58b8c7024b3dab |
| institution | Kabale University |
| issn | 1542-7390 |
| language | English |
| publishDate | 2023-09-01 |
| publisher | Wiley |
| record_format | Article |
| series | Space Weather |
| spelling | doaj-art-970f4c2aa3994d38aa58b8c7024b3dab2025-01-14T16:31:22ZengWileySpace Weather1542-73902023-09-01219n/an/a10.1029/2023SW003553Two‐Line Elements Based Thermospheric Mass Density Specification From Parameter Optimization of a Physics‐Based ModelDexin Ren0Jiuhou Lei1Deep Space Exploration Laboratory/School of Earth and Space Sciences University of Science and Technology of China Hefei ChinaDeep Space Exploration Laboratory/School of Earth and Space Sciences University of Science and Technology of China Hefei ChinaAbstract Accurately estimating the mass density of the thermosphere can assist satellite operators in planning missions and optimizing satellite orbits, reducing the risk of collisions. The newly developed GOFT (Global Observation‐based Forecast for the Thermosphere) model specifies thermospheric mass density by optimizing uncertainty parameters in a physics‐based model based on model errors. This study extends the model to specify thermospheric mass density based on Two‐Line Elements (TLEs) from numerous space objects. The resulting mass density is validated against accelerometer‐derived mass density from different satellites. The comparison results revealed that assimilating TLEs into the GOFT model significantly improved the accuracy of the thermospheric mass density. In addition, the GOFT model also improved the accuracy of the electron density in the ionosphere, indicating that the assimilation capability of GOFT allows simultaneous specification of coupled ionosphere and thermosphere in future applications.https://doi.org/10.1029/2023SW003553thermospheredata assimilationtwo‐line elementsphysics‐based model |
| spellingShingle | Dexin Ren Jiuhou Lei Two‐Line Elements Based Thermospheric Mass Density Specification From Parameter Optimization of a Physics‐Based Model Space Weather thermosphere data assimilation two‐line elements physics‐based model |
| title | Two‐Line Elements Based Thermospheric Mass Density Specification From Parameter Optimization of a Physics‐Based Model |
| title_full | Two‐Line Elements Based Thermospheric Mass Density Specification From Parameter Optimization of a Physics‐Based Model |
| title_fullStr | Two‐Line Elements Based Thermospheric Mass Density Specification From Parameter Optimization of a Physics‐Based Model |
| title_full_unstemmed | Two‐Line Elements Based Thermospheric Mass Density Specification From Parameter Optimization of a Physics‐Based Model |
| title_short | Two‐Line Elements Based Thermospheric Mass Density Specification From Parameter Optimization of a Physics‐Based Model |
| title_sort | two line elements based thermospheric mass density specification from parameter optimization of a physics based model |
| topic | thermosphere data assimilation two‐line elements physics‐based model |
| url | https://doi.org/10.1029/2023SW003553 |
| work_keys_str_mv | AT dexinren twolineelementsbasedthermosphericmassdensityspecificationfromparameteroptimizationofaphysicsbasedmodel AT jiuhoulei twolineelementsbasedthermosphericmassdensityspecificationfromparameteroptimizationofaphysicsbasedmodel |