Bibcode
Lagg, A.; Yelles, L.; Hirzberger, J.; Woch, J.; Solanki, S. K.
Bibliographical reference
Proceedings of The Second Solar Orbiter Workshop, by Marsch, E.; Tsinganos, K.; Marsden, R.; Conroy, L. ESA-SP 641. ISBN: 92-9291-205-2. Noordwijk, Netherlands: European Space Agency, 2006, id.69
Advertised on:
10
2006
Citations
0
Refereed citations
0
Description
Spectropolarimetric observations in photospheric lines reveal a wealth
of information on physical parameters of the solar atmosphere like
magnetic field strength and di rection or the line-of sight velocity.
These observations require the measurement of the four Stokes parameters
at a sample of N wavelength positions around the core of the spectral
line, resulting in 4N images for one observation. The Visible light
Imager and Magnetograph (VIM) instrument on board Solar Orbiter is
capable of performing these measurements. However, the data rate
required to transfer all 4N images with the required cadence is well
beyond the telemetry limit. Here we use realistic, three-dimensional MHD
simulations in order to simulate science data provided by VIM which are
then used to test various compression techniques. We conclude that lossy
data compression and instrumental noise have similar effects on the
output data.