Real-Time Lock-In Amplifier Implementation Using a Kalman Filter for Quasi-Periodic Signal Processing in Fusion Plasma Diagnostics

被引：7

作者：

Coelho, R. ^{[1
]}

Alves, D. ^{[1
]}

机构：

[1] Inst Plasmas & Fusao Nucl, EURATOM Assoc, IST, P-1049001 Lisbon, Portugal

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 2009年 / 37卷 / 01期

关键词：

Diagnostics; estimation; plasma measurements; real-time systems; signal processing; FREQUENCY; IDENTIFICATION; TRACKING; DESIGN;

D O I：

10.1109/TPS.2008.2006976

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The prospects for the real-time amplitude estimation of selected harmonic components of quasi-periodic signals from a motional Stark effect (MSE) tokamak plasma diagnostic is addressed using Kalman filtering techniques. The proposed method is shown to be more competitive than a standard low-pass filter lock-in amplifier scheme. In particular, when block data processing is limited to a small number of samples signal harmonies are narrowly separated in frequency or in the presence of frequency jitter, the superior competencies of the Kalman filtering method are evidenced.

引用

页码：164 / 170

页数：7