GNSS attitude determination with non-synchronized receivers and short baselines onboard a spacecraft
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Author / Producer
Date
2017-10
Publication Type
Journal Article
ETH Bibliography
yes
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Abstract
A new algorithm for global navigation satellite system attitude determination onboard a spacecraft was developed. A distinct feature of the algorithm is the extrapolation of the measurements to a common epoch within a Kalman filter. The necessity for the extrapolation arises from the usage of non-synchronized low-cost receivers. The extrapolation terms typically range from –6 to +6 m for u-blox receivers. Thus, no solution can be obtained without a proper extrapolation. A validation was carried out with synthetic data as well as with signal simulator data. The algorithm delivers an attitude estimation with an accuracy below 1° for three orthogonal baselines of 10 cm length. In conclusion, the algorithm is proven to work, offering a very efficient method of attitude determination onboard a spacecraft.
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Publication status
published
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Editor
Book title
Journal / series
Volume
21 (4)
Pages / Article No.
1605 - 1617
Publisher
Springer
Event
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Attitude determination; Quaternion; Kalman filter; Low earth orbit; Spacecraft; Satellite
Organisational unit
03824 - Rothacher, Markus (emeritus) / Rothacher, Markus (emeritus)
Notes
It was possible to publish this article open access thanks to a Swiss National Licence with the publisher.