Method and system for real-time calculation of phase shift signal, method and system for plasma diagnosis

Abstract

The invention discloses a method and system for calculating dynamic phase shift signals in real time. The method includes the following steps: respectively segmenting the intermediate frequency signals of the measurement track and the reference track; A / D is converted into a digital signal; the obtained digital signals of the measurement track and reference track in the current period are respectively Fourier transformed into frequency domain signals, and the accurate frequency in the current period is obtained at the same time; according to the accurate frequency in the current period, the current period The frequency domain signals of the reference trace and the measurement trace are conjugated to obtain the phase difference. The invention also discloses a plasma diagnosis method and system. The method and system for real-time calculation of dynamic phase-shift signals of the present invention can realize unattended reliable real-time phase calculation and output, and the method and system for real-time calculation of phase-shift signals and the plasma diagnosis method and system of the above-mentioned system can further reliably realize Unattended real-time electron density and current density measurements.

Description

technical field [0001] The present invention relates to the field of nuclear fusion plasma diagnosis, in particular to a method and system for real-time calculation of the phase shift signal that can be applied to the real-time calculation of the dynamic phase shift of multiple intermediate frequency signals in polarized light measurement technology. The present invention also relates to the application of the above real-time Method and system for calculating phase shift signal Plasma diagnosis method and system. Background technique [0002] In nuclear fusion devices and physics research, plasma electron density and current density are the most basic and critical physical parameters for studying plasma behavior and physics. Relevant international and domestic research institutions are constantly investing manpower and material resources to research and develop more reliable diagnostic techniques and methods that can be processed in real time with high spatiotemporal resolut...

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is that in the prior art, due to the frequency drift of the laser, it is difficult to realize the real-time calculation of the phase difference during the nuclear fusion test, and then provide a real-time calculation dynamic that can be applied when the frequency of the laser drifts. For the method of phase shifting signal, the present invention also provides a system for calculating dynamic phase shifting signal in real time and a plasma diagnosis method and system applying the method and system for calculating phase shifting signal in real time

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