Bibcode
Lagg, A.; Yelles, L.; Hirzberger, J.; Woch, J.; Solanki, S. K.
Referencia bibliográfica
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
Fecha de publicación:
10
2006
Número de citas
0
Número de citas referidas
0
Descripción
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.