Comparison of Three Methods in Extracting Coherent Modes from a Doppler Backscatter System
Comparison of Three Methods in Extracting Coherent Modes from a Doppler Backscatter System
复制标题
从多普勒反向散射系统中提取相干模式的三种方法的比较
DOI:
10.1088/0256-307x/32/12/125201
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发表时间:
2015-12
影响因子:
3.5
通讯作者:
Xie Jin Lin
中科院分区:
文献类型:
--
作者:
Zhang Xiao Hui;Liu A Di;Zhou Chu;Hu Jian Qiang;Wang Ming Yuan;Yu Chang Xuan;Liu Wan Dong;Li Hong;Lan Tao;Xie Jin Lin
We compare three different methods to extract coherent modes from Doppler backscattering (DBS), which are center of gravity (COG) of the complex amplitude spectrum, spectrum of DBS phase derivative (phase derivative method), and phase spectrum, respectively. These three methods are all feasible to extract coherent modes, for example, geodesic acoustic mode oscillation. However, there are still differences between dealing with high frequency modes (several hundred kHz) and low frequency modes (several kHz) hiding in DBS signal. There is a significant amount of power at low frequencies in the phase spectrum, which can be removed by using the phase derivative method and COG. High frequency modes are clearer by using the COG and the phase derivative method than the phase spectrum. The spectrum of DBS amplitude does not show the coherent modes detected by using COG, phase derivative method and phase spectrum. When two Doppler shifted peaks exist, coherent modes and their harmonics appear in the spectrum of DBS amplitude, which are introduced by the DBS phase.
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DOI:
10.1063/1.3205449
发表时间:
2009-08
期刊:
The Review of scientific instruments
影响因子:
--
作者:
J. Hillesheim;W. Peebles;T. Rhodes;L. Schmitz;T. Carter;P. Gourdain;G. Wang
通讯作者:
J. Hillesheim;W. Peebles;T. Rhodes;L. Schmitz;T. Carter;P. Gourdain;G. Wang
影响因子:
2.2
作者:
J. Hillesheim;J. Deboo;W. Peebles;T. Carter;Gang Wang;T. Rhodes;L. Schmitz;G. McKee;Zheng Yan;G. Staebler;K. Burrell;E. Doyle;C. Holland;C. Petty;Sterling P. Smith;A. White;L. Zeng
通讯作者:
J. Hillesheim;J. Deboo;W. Peebles;T. Carter;Gang Wang;T. Rhodes;L. Schmitz;G. McKee;Zheng Yan;G. Staebler;K. Burrell;E. Doyle;C. Holland;C. Petty;Sterling P. Smith;A. White;L. Zeng
影响因子:
3.3
作者:
E. Trier;L. Eriksson;P. Hennequin;C. Fenzi;C. Bourdelle;G. Falchetto;X. Garbet;T. Aniel;F. Clairet;R. Sabot
通讯作者:
E. Trier;L. Eriksson;P. Hennequin;C. Fenzi;C. Bourdelle;G. Falchetto;X. Garbet;T. Aniel;F. Clairet;R. Sabot
DOI:
10.1063/1.3464475
发表时间:
2010-10
期刊:
The Review of scientific instruments
影响因子:
--
作者:
T. Happel;E. Blanco;T. Estrada
通讯作者:
T. Happel;E. Blanco;T. Estrada
影响因子:
4.6
作者:
N. Winsor;John L. Johnson;J. Dawson
通讯作者:
N. Winsor;John L. Johnson;J. Dawson