DGNSS; Relative navigation; State estimation; Extended Kalman Filter
Abstract :
[en] Relative baseline estimation is an integral part of satellite formation flying missions. GNSS-based relativepositioning has been a dominating technology for formation missions in LEO, where very precise estimatescould be obtained for formations with small inter-satellite distances (1 − 10 km). Larger baselines betweenthe satellites (> 10 km) pose the problem of considerable differences in the ionospheric delays experiencedby the signals received by each receiver. This problem could be mitigated by using precise ionospheric-freecombinations that could only be obtained by dual-frequency receivers, which is not a cost-efficient optionfor modern low-cost miniature missions. In this paper, the problem of relative baseline vector estimation isaddressed for formation missions with large inter-satellite distances equipped with single-frequency receivers.The problem is approached using the space-proven relatively simple Extended Kalman Filter with anadvantageous setting for the observation vector
Research center :
Interdisciplinary Centre for Security, Reliability and Trust (SnT) > ARG - Automation & Robotics
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
MAHFOUZ, Ahmed ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > Automation
Menzio, Davide
Dalla Vedova, Florio
VOOS, Holger ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > Automation
External co-authors :
no
Language :
English
Title :
Relative State Estimation for LEO Formations with Large Inter-satellite Distances Using Single-Frequency GNSS Receivers
Publication date :
June 2022
Event name :
11th International Workshop on Satellite Constellations & Formation Flying
Event organizer :
Polytechnic University of Milan
Event place :
Milan, Italy
Event date :
from 07-07-2022 to 10-07-2022
Audience :
International
Peer reviewed :
Editorial reviewed
FnR Project :
FNR14302465 - Development Tool For Autonomous Constellation And Formation Control Of Microsatellites, 2019 (01/09/2020-31/08/2023) - Holger Voos