Tomographic analysis of reflectometry data II: the phase derivative

TL;DR

This paper presents a tomographic method to extract the instantaneous phase derivative from complex signals, demonstrated on simulated and plasma reflectometry data, enhancing signal component analysis.

Contribution

The paper extends previous tomographic techniques to accurately compute the phase derivative of signal components in plasma reflectometry data.

Findings

Effective phase derivative extraction demonstrated on simulated data

Successful application to plasma reflectometry measurements

Improved signal component analysis in complex signals

Abstract

A tomographic technique has been used in the past to decompose complex signals in its components. The technique is based on spectral decomposition and projection on the eigenvectors of a family of unitary operators. Here this technique is also shown to be appropriate to obtain the instantaneous phase derivative of the signal components. The method is illustrated on simulated data and on data obtained from plasma reflectometry experiments in the Tore Supra.