Extracting individual contributions from their mixture: a blind source separation approach, with examples from space and laboratory plasmas

Details Extracting individual contributions from their mixture: a blind source separation approach, with examples from space and laboratory plasmas Extracting individual contributions from their mixture: a blind source separation approach, with examples from space and laboratory plasmas

2010-10-16

arxiv.org/abs/1010.3323v1

Physics

Plasma Physics

expanded version of an article to appear in Contributions to Plasma Physics (2010)

Scientific paper

Multipoint or multichannel observations in plasmas can frequently be modelled as an instantaneous mixture of contributions (waves, emissions, ...) of different origins. Recovering the individual sources from their mixture then becomes one of the key objectives. However, unless the underlying mixing processes are well known, these situations lead to heavily underdetermined problems. Blind source separation aims at disentangling such mixtures with the least possible prior information on the sources and their mixing processes. Several powerful approaches have recently been developed, which can often provide new or deeper insight into the underlying physics. This tutorial paper briefly discusses some possible applications of blind source separation to the field of plasma physics, in which this concept is still barely known. Two examples are given. The first one shows how concurrent processes in the dynamical response of the electron temperature in a tokamak can be separated. The second example deals with solar spectral imaging in the Extreme UV and shows how empirical temperature maps can be built.

Affiliated with

Also associated with

No associations

Rating

Extracting individual contributions from their mixture: a blind source separation approach, with examples from space and laboratory plasmas does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Extracting individual contributions from their mixture: a blind source separation approach, with examples from space and laboratory plasmas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extracting individual contributions from their mixture: a blind source separation approach, with examples from space and laboratory plasmas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-181794