NDLI: Momentum Biased Performance of LAPAN-A3 Satellite for Multispectral Pushbroom Imager Operation

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Momentum Biased Performance of LAPAN-A3 Satellite for Multispectral Pushbroom Imager Operation

Content Provider	Scilit
Author	Utama, S. Saifudin, M. A. Mukhayadi, M.
Copyright Year	2018
Description	Journal: Iop Conference Series: Earth and Environmental Science One of LAPAN-A3 satellite's missions is for earth observation using multispectral pushbroom imager. This mission needs a stable and accurate attitude to capture any area of interest. To accomplish the mission LAPAN-A3 satellite use momentum biased attitude control. The satellite use magnetic torquers to control the angular momentum vector and a reaction wheel to spin the satellite to remain nadir pointing. When the satellite spinning there are nutation and precession occurred. This paper observes attitude accuracy and stability due to nutation and precession of the satellite's momentum and the effect to pushbroom imager operation. Nutation observed with 0.28° amplitude and 73 seconds period, and precession observed with 1° amplitude and 92 minutes period. This nutation and precession profile will lead to 2.6° attitude accuracy and maximum movement on ground track 0.055 km/s in along track direction and 0.259 km/s (0.026°/s) in cross track direction. Both of attitude accuracy and movement are outperformed the limitation. However due to satellite movement in orbit there is still blurring effect on the imager.
Related Links	https://iopscience.iop.org/article/10.1088/1755-1315/149/1/012062/pdf http://iopscience.iop.org/article/10.1088/1755-1315/149/1/012062/pdf
ISSN	17551307
e-ISSN	17551315
DOI	10.1088/1755-1315/149/1/012062
Journal	Iop Conference Series: Earth and Environmental Science
Issue Number	1
Volume Number	149
Language	English
Publisher	IOP Publishing
Publisher Date	2018-05-16
Access Restriction	Open
Subject Keyword	Journal: Iop Conference Series: Earth and Environmental Science
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Physics and Astronomy Environmental Science

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