High accuracy GNSS-based on-board orbit determination and prediction methods for tracking software in satellite laser communications

Master Thesis (2023)
Author(s)

K. Paliušis (TU Delft - Aerospace Engineering)

Contributor(s)

J. Guo – Mentor (TU Delft - Space Systems Egineering)

R Noomen – Coach (TU Delft - Astrodynamics & Space Missions)

A.A. Verhagen – Coach (TU Delft - Mathematical Geodesy and Positioning)

Bayajid Khan – Mentor (Mynaric)

Faculty
Aerospace Engineering
Copyright
© 2023 Kipras Paliušis
More Info
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Publication Year
2023
Language
English
Copyright
© 2023 Kipras Paliušis
Graduation Date
22-03-2023
Awarding Institution
Delft University of Technology
Programme
['Aerospace Engineering']
Sponsors
None
Faculty
Aerospace Engineering
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Abstract

Laser communication provides numerous benefits over typical Radio Frequency communication, such as lower power, not occupying regulated frequency bands, possibilities for much higher data rates and resistance to jamming. Combined with satellite constellations, Laser Inter-satellite Links (LISL) can enable global connectivity. However, satellites move at fast relative velocities, while optical beam divergence angles are in micro-radian levels. Thus, low-latency and precise position data between linking satellites is crucial. This thesis investigates the LISL conditions in a combined LEO/MEO constellation and the applicability of on-board GNSS-based Orbit Determination (OD) and Orbit Prediction (OP). Novel methods, such as Preprocessing Extended and Single-propagation Unscented Kalman Filters are tested and compared to typical GNSS-OD methods. Analyzing Pointing Uncertainty contributions in various link cases, results indicated that fully-kinematic methods could support LISL for 100-s periods, whereas reduced-dynamic OD-OP methods performed more consistently.

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