There are two big stages to implement in a signal classification process: features extraction and signal classification. The present work shows up the development of an automated classifier based on the use of the Wavelet Transform to extract signal characteristics, and Neural Networks (Feed Forward type) to obtain decision rules. The classifier has been applied to the nuclear fusion environment (TJ-II stellarator), specifically to the Thomson Scattering diagnostic, which is devoted to measure density and temperature radial profiles. The aim of this work is to achieve an automated profile reconstruction from raw data without human intervention. Raw data processing depends on the image pattern obtained in the measurement and, therefore, an image classifier is required. The method reduces the 221.760 original features to only 900, being the success mean rate over 90%. This classifier has been programmed in MATLAB.
|Number of pages||9|
|Journal||Lecture Notes in Computer Science|
|Issue number||PART II|
|State||Published - 2005|
|Event||First International Work-Conference on the Interplay Between Natural and Artificial Computation, IWINAC 2005 - Las Palmas, Canary Islands, Spain|
Duration: 15 Jun 2005 → 18 Jun 2005