Topside Ionospheric Tomography Exclusively Based on LEO POD GPS Carrier Phases: Application to Autonomous LEO DCB Estimation
| Autor: | Manuel Hernández-Pajares, Germán Olivares-Pulido, M. Mainul Hoque, Fabricio S. Prol, Liangliang Yuan, Riccardo Notarpietro, Victoria Graffigna |
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| Přispěvatelé: | Maanmittauslaitos, National Land Survey of Finland, Universitat Politècnica de Catalunya. Departament de Matemàtiques, Universitat Politècnica de Catalunya. IonSAT - Grup de determinació Ionosfèrica i navegació per SAtèl·lit i sistemes Terrestres |
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: |
Programming (Mathematics)
Matemàtiques i estadística::Investigació operativa::Programació matemàtica [Àrees temàtiques de la UPC] ionospheric tomography Matemàtiques i estadística::Matemàtica aplicada a les ciències [Àrees temàtiques de la UPC] 90 Operations research mathematical programming::90C Mathematical programming [Classificació AMS] Low Earth Orbiting satellites Geofísica Global Navigation Satellite Systems Ionospheric tomography Differential code biases Geophysics Programació (Matemàtica) General Earth and Planetary Sciences 86 Geophysics [Classificació AMS] differential code biases |
| Popis: | This paper presents a novel technique to estimate DCBs from GPS transmitters and receivers on-board Low Earth Orbit (LEO) satellites. The technique consists of obtaining the DCBs as residuals from the difference between the ionospheric combination of the code and the associated ionospheric delay. The ionospheric delay is computed with TOMION, a background-model-free ionospheric tomographic technique based on dual-frequency GPS carrier phase data only, and solved with a Kalman filter. Thus, DCBs are also estimated epoch-wise from the LEO Precise Orbit Determination (POD) GPS receiver as a secondary product. The results for GPS satellite DCBs, obtained exclusively from the three MetOp LEO POD GPS receivers over four consecutive weeks, are in full agreement (i.e., at the level of a few tenths of ns) with those reported independently with other techniques from hundreds of ground-based receivers exclusively, by JPL and CODE analysis centers. The work has been performed coinciding with the execution of the PITHIA-NRF H2020 project (H2020-INFRAIA-2018-2020101007599) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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