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Precise On-Board Navigation of LEO Satellites with GNSS Broadcast Ephemerides

Hauschild, André and Montenbruck, Oliver (2020) Precise On-Board Navigation of LEO Satellites with GNSS Broadcast Ephemerides. In: Proceedings of the 33rd International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS+ 2020, pp. 3866-3874. ION GNSS+ 2020, 22.-25. Sep. 2020, virtuell. doi: 10.33012/2020.17752. ISBN 978-093640626-8.

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Abstract

The availability of orbit information with high precision and low latency is a key requirement for many Earthobservation missions, predominantly in the field of radio occultation. Traditionally, precise orbit determination solutions of low-Earth orbit (LEO) satellites are done offline on the ground after dwonloading GNSS measurements and required auxiliary data, like satellite attitude, to the processing center. The latency of this processing depends on the frequency of LEO down-link contacts and the latency of the precise GNSS orbit and clock products required for the orbit determination process. These dependencies can be removed by computing the precise orbit determination solution onboard the satellite using GNSS broadcast ephemerides. In this study, both real data and simulated measurements from a representative LEO satellite are processed in a flight-proven Kalman-filter algorithm. The paper studies the use of GPS, Galileo and BeiDou-3 for real-time orbit determination in different combinations with simulated measurements. Results show that the use of dual-frequency Galileo and BeiDou-3 measurements leads to a significant reduction of 3D rms orbit errors compared to GPS-only and achieves a positioning accuracy of about one decimeter.

Item URL in elib:https://elib.dlr.de/138943/
Document Type:Conference or Workshop Item (Speech)
Title:Precise On-Board Navigation of LEO Satellites with GNSS Broadcast Ephemerides
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Hauschild, Andréandre.hauschild (at) dlr.dehttps://orcid.org/0000-0002-0172-3492
Montenbruck, OliverOliver.Montenbruck (at) dlr.dehttps://orcid.org/0000-0003-4783-745X
Date:2020
Journal or Publication Title:Proceedings of the 33rd International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS+ 2020
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI :10.33012/2020.17752
Page Range:pp. 3866-3874
ISBN:978-093640626-8
Status:Published
Keywords:On-Board Navigation, LEO Satellites, GNSS, Broadcast Ephemerides
Event Title:ION GNSS+ 2020
Event Location:virtuell
Event Type:international Conference
Event Dates:22.-25. Sep. 2020
Organizer:Institute of Navigation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space System Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Space System Technology
DLR - Research theme (Project):R - Vorhaben Infrastruktur und Unterstützung für Raumflugbetrieb (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training > Space Flight Technology
Space Operations and Astronaut Training
Deposited By: Hauschild, André
Deposited On:02 Dec 2020 09:36
Last Modified:25 Jan 2021 15:22

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