Article (Scientific journals)
GNSS-based baseline vector determination for widely separated cooperative satellites using L1-only receivers
MAHFOUZ, Ahmed; MENZIO, Davide; Dalla Vedova, Florio et al.
2023In Advances in Space Research
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Keywords :
DGNSS; Extended Kalman Filter; Relative navigation; Satellite formation; State estimation; Baseline vectors; Global Navigation Satellite Systems; Inter satellite distances; Ionospheric delays; Real-time estimation; Relative positions; Relative velocity; Satellites formation; Aerospace Engineering; Astronomy and Astrophysics; Geophysics; Atmospheric Science; Space and Planetary Science; Earth and Planetary Sciences (all); General Earth and Planetary Sciences
Abstract :
[en] Real time estimation of the relative position and velocity vectors between two satellites in a formation is an integral part of the formation control loop. Relative positioning based on Global Navigation Satellite Systems (GNSS) has been a dominating technology for formation missions in LEO, where extremely precise estimates could be obtained for formations with small inter-satellite distances (1-10 km). Larger baselines between the satellites (>10 km) are more challenging as they pose the problem of huge differences in the ionospheric delays experienced by the signals received by each receiver. This problem could be mitigated by using precise ionospheric-free combinations that could only be obtained by dual-frequency receivers, which is not a cost-efficient option for the modern low-cost miniature missions. In this paper, the problem of GNSS-based relative navigation between two spacecraft with large inter-satellite distance which are equipped with single-frequency receivers is treated through adopting the space-proven Extended Kalman Filter (EKF). Although using an EKF for relative navigation is a common practice, there are many variants of the filter settings, which vary in terms of the state and measurement vectors to be adopted as well as the techniques to be used to handle the ionospheric delay. In this research, optimal settings of the filter are sought for the problem of relative baseline vector estimation between two spacecraft that have large separation and which are equipped with with single-frequency GNSS receivers.
Research center :
Interdisciplinary Centre for Security, Reliability and Trust (SnT) > ARG - Automation & Robotics
ULHPC - University of Luxembourg: High Performance Computing
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
MAHFOUZ, Ahmed  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > Automation
MENZIO, Davide ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust > Automation > Team Holger VOOS
Dalla Vedova, Florio;  LuxSpace, Betzdorf, Luxembourg
VOOS, Holger  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > Automation
External co-authors :
no
Language :
English
Title :
GNSS-based baseline vector determination for widely separated cooperative satellites using L1-only receivers
Publication date :
10 July 2023
Journal title :
Advances in Space Research
ISSN :
0273-1177
eISSN :
1879-1948
Publisher :
Elsevier Ltd
Special issue title :
Recent Advances in Satellite Constellations and Formation Flying
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Computational Sciences
FnR Project :
AuFoSat
Name of the research project :
Autonomous Constellation and Formation Control of Microsatellites
Funders :
Fonds National de la Recherche Luxembourg
Université du Luxembourg
Funding number :
BRIDGES/19/MS/14302465
Funding text :
This work is supported by the Luxembourg National Research Fund (FNR) – AuFoSat project, BRIDGES/19/MS/14302465.
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since 14 November 2023

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