聚变等离子体微波反射成像系统数据处理算法研究
发布时间：2018-07-13 10:39
【摘要】：微波反射成像诊断主要是在微波反射诊断和准光学成像理论基础之上发展起来的,主要用于测量等离子体一维、二维或三维磁流体不稳定性以及电子密度扰动。此技术的基本原理是通过探测在等离子体中与电子密度密切相关的截止层来获得电子密度在截止层面上的空间分布信息。密度扰动的数据可以由从虚拟截止层反射回的反射波的相位扰动来得到。微波反射成像技术是诊断聚变等离子体的密度扰动的一项新的技术。但是,在微波反射成像信号处理方面尚未提出明确信号反演方法。本文针对微波反射成像数据处理方面做深入而系统的研究。本文首先简单地介绍了微波反射成像系统的发展历程和现状,然后阐述了微波反射成像系统的基本原理。介绍了微波反射成像诊断等离子体密度扰动的基本理论和多普勒效应基本原理,结合两者理论,推导出微波反射成像信号反演的算法,同时也推导出微波反射成像实验数据分析的算法。基于微波反射成像信号反演的算法和微波反射成像实验数据分析的算法,利用QT技术设计并开发出微波反射成像数据处理软件。此软件设计主要包括UI界面设计、数据采集、数据计算、数据显示、数据分析五大模块。最后,利用聚变等离子体微波反射成像系统的实验平台对微波反射成像数据处理软件进行测试,并对实验结果进行分析,验证了微波反射成像信号反演算法的正确性。
[Abstract]:Microwave reflection imaging diagnosis is mainly based on microwave reflection diagnosis and quasi-optical imaging theory. It is mainly used to measure one-dimensional, two-dimensional or three-dimensional magnetic fluid instability and electron density disturbance. The basic principle of this technique is to obtain the spatial distribution information of electron density at the cutoff level by detecting the cutoff layer closely related to electron density in plasma. The data of density perturbations can be obtained from phase perturbations of reflected waves reflected from virtual cutoff layers. Microwave reflection imaging is a new technique to diagnose density disturbance of fusion plasma. However, there is no clear signal inversion method in microwave reflection imaging signal processing. In this paper, the data processing of microwave reflection imaging is studied deeply and systematically. In this paper, the development history and present situation of microwave reflection imaging system are introduced briefly, and then the basic principle of microwave reflection imaging system is expounded. In this paper, the basic theory of microwave reflection imaging for diagnosing plasma density disturbance and the basic principle of Doppler effect are introduced. Combined with the two theories, the inversion algorithm of microwave reflection imaging signal is deduced. At the same time, an algorithm for analyzing the experimental data of microwave reflection imaging is derived. Based on the algorithm of microwave reflection imaging signal inversion and the analysis algorithm of microwave reflection imaging experimental data, the data processing software of microwave reflection imaging is designed and developed by using QT technology. The software design includes five modules: UI interface design, data acquisition, data calculation, data display and data analysis. Finally, the data processing software of microwave reflection imaging is tested on the experimental platform of fusion plasma microwave reflection imaging system, and the experimental results are analyzed to verify the correctness of the inversion algorithm of microwave reflection imaging signal.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TP274;TN015
本文编号：2119075
[Abstract]:Microwave reflection imaging diagnosis is mainly based on microwave reflection diagnosis and quasi-optical imaging theory. It is mainly used to measure one-dimensional, two-dimensional or three-dimensional magnetic fluid instability and electron density disturbance. The basic principle of this technique is to obtain the spatial distribution information of electron density at the cutoff level by detecting the cutoff layer closely related to electron density in plasma. The data of density perturbations can be obtained from phase perturbations of reflected waves reflected from virtual cutoff layers. Microwave reflection imaging is a new technique to diagnose density disturbance of fusion plasma. However, there is no clear signal inversion method in microwave reflection imaging signal processing. In this paper, the data processing of microwave reflection imaging is studied deeply and systematically. In this paper, the development history and present situation of microwave reflection imaging system are introduced briefly, and then the basic principle of microwave reflection imaging system is expounded. In this paper, the basic theory of microwave reflection imaging for diagnosing plasma density disturbance and the basic principle of Doppler effect are introduced. Combined with the two theories, the inversion algorithm of microwave reflection imaging signal is deduced. At the same time, an algorithm for analyzing the experimental data of microwave reflection imaging is derived. Based on the algorithm of microwave reflection imaging signal inversion and the analysis algorithm of microwave reflection imaging experimental data, the data processing software of microwave reflection imaging is designed and developed by using QT technology. The software design includes five modules: UI interface design, data acquisition, data calculation, data display and data analysis. Finally, the data processing software of microwave reflection imaging is tested on the experimental platform of fusion plasma microwave reflection imaging system, and the experimental results are analyzed to verify the correctness of the inversion algorithm of microwave reflection imaging signal.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TP274;TN015
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相关硕士学位论文 前1条
1 聂涛;聚变等离子体微波反射成像系统数据处理算法研究[D];电子科技大学;2015年
，本文编号：2119075
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