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Abstract

The biorthogonal decomposition (also referred to as the singular value decomposition) has recently emerged as a powerful tool for analysing and processing multichannel data. The report shows how this method can be used to enhance the signal-to-noise ratio of such data in a self-consistent way. Three applications to multichannel diagnostics that are routinely used on plasma devices are presented: a soft X-ray camera, an XUV spectrometer and a microwave reflectometer. In each case, a physical interpretation is given. Furthermore, a robust criterion is presented, allowing data to be processed without making restrictive assumptions on their noise properties.

Additional information

Authors: DUDOK DE WIT T, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Report: EUR-CEA-FC-1509 EN (1994) 46 pp.
Availability: Available from CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR)
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