| Comparison of methods for turbulence Doppler frequency shift calculation in Doppler reflectometer |
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| 作者姓名： | 仲小明 邹晓岚 周楚 刘阿娣 庄革 冯喜 张津 季佳旭 范泓锐 刘深 王士凡 高刘天 史文祥 兰涛 李弘 谢锦林 毛文哲 刘子奚 刘万东 |
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| 作者单位： | 1. School of Nuclear Science and Technology, University of Science and Technology of China;3. Shenzhen University |
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| 基金项目： | National Natural Science Foundation of China (Nos. U1967206, 11975231 and 11922513)； |
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| 摘 要： | The Doppler reflectometer(DR), a powerful diagnostic for the plasma perpendicular velocity(u⊥) and turbulence measurement, has been widely used in various fusion devices. Many efforts have been put into extracting the Doppler shift from the DR signal. There are several commonly used methods for Doppler shift extraction, such as the phase derivative, the center of gravity, and symmetric fitting(SFIT). However, the strong zero-order reflection component around 0 k Hz may interfere with the calcula...
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