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A new approach for LEO receiver bias estimation and TEC calibration for LEO-GNSS paths

Hoque, Mohammed Mainul und Jakowski, Norbert und Berdermann, Jens (2016) A new approach for LEO receiver bias estimation and TEC calibration for LEO-GNSS paths. International Beacon Satellite Symposium BSS-2016, 2016-06-27 - 2016-07-01, Trieste, Italy.

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Offizielle URL: http://t-ict4d.ictp.it/beacon2016/

Kurzfassung

Many Low Earth Orbiting (LEO) satellites have been/will be launched with Global Navigation Satellite System (GNSS) receivers aboard, especially for precise orbit determination (POD) purpose and occasionally also for radio occultation measurements (e.g., CHAMP/GRACE/COSMIC-1,-2/SAC-C/TerraSAR-X/Metop- A/Jason1, 2 ...). Space based TEC (total electron content) observations, especially ionospheric radio occultation (IRO) observations have shown a great potential in ionospheric data assimilation [3] for better nowcast, forecast, and ionospheric driver estimation because of global coverage and high vertical resolution. Having a large number of POD related slant TEC observations makes the 3-D imaging of ionosphere/plasmasphere attractive [4]. However, big TEC errors will make the data useless. Therefore, it is important to know the quality of TEC data used in data assimilation. One of the main sources of TEC error is the inter-frequency LEO receiver bias (e.g., Differential Code Bias DCB) estimation. We applied a new approach for bias estimation of GPS receivers installed on board the COSMIC satellites and calibration of ionospheric radio occultation measurements, i.e., TEC estimation for LEO-GPS paths. For doing this, we used the daily estimates of differential GPS satellite biases that are publicly available from the CODE (Center for Orbit Determination System). Additionally, high quality CODE post processed vertical TEC maps are used together with a multi-layer mapping function approach [1] to initialize TEC at the highest elevation angle ray-path in the LEO-GPS phase-connected arc. Moreover, an exponential decay of electron density with altitude is used to model the plasmaspheric electron content above the LEO satellite height.

elib-URL des Eintrags:https://elib.dlr.de/104135/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:A new approach for LEO receiver bias estimation and TEC calibration for LEO-GNSS paths
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Hoque, Mohammed MainulMainul.Hoque (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Jakowski, Norbertnorbert.jakowski (at) dlr.dehttps://orcid.org/0000-0003-3174-2624NICHT SPEZIFIZIERT
Berdermann, Jensjens.berdermann (at) dlr.dehttps://orcid.org/0000-0002-3308-4584NICHT SPEZIFIZIERT
Datum:2016
Referierte Publikation:Nein
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:GNSS, Radio occultation, LEO Receiver bias estimation, TEC calibration
Veranstaltungstitel:International Beacon Satellite Symposium BSS-2016
Veranstaltungsort:Trieste, Italy
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:27 Juni 2016
Veranstaltungsende:1 Juli 2016
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Kommunikation und Navigation
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R KN - Kommunikation und Navigation
DLR - Teilgebiet (Projekt, Vorhaben):R - Vorhaben Ionosphäre (alt)
Standort: Neustrelitz
Institute & Einrichtungen:Institut für Kommunikation und Navigation > Navigation
Hinterlegt von: Hoque, Mohammed Mainul
Hinterlegt am:26 Jan 2017 13:41
Letzte Änderung:24 Apr 2024 20:09

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