Simultaneous Inversion of Seawater Temperature and Salinity Based on Stimulated Brillouin Scattering

被引：2
|
作者：
Xu Ning [1 ,2 ]
Zhang Bo [1 ,2 ]
Luo Ningning [1 ,2 ]
Xu Jinjun [1 ,2 ]
He Xingdao [1 ,2 ,3 ]
Shi Jiulin [1 ,2 ,3 ]
机构：
[1] Nanchang Hangkong Univ, Jiangxi Prov Key Lab Optoelect Informat Sci & Tec, Nanchang 330063, Jiangxi, Peoples R China
[2] Nanchang Hangkong Univ, Key Lab Nondestruct Testing Minist Educ, Nanchang 330063, Jiangxi, Peoples R China
[3] Nanchang Hangkong Univ, Natl Engn Lab Nondestruct Testing & Optoelect Sen, Nanchang 330063, Jiangxi, Peoples R China
来源：
ACTA OPTICA SINICA | 2022年 / 42卷 / 24期
关键词：
scattering; stimulated Brillouin scattering; frequency shift; line width; temperature; salinity; BULK VISCOSITY; SOUND SPEED; OCEAN; LIDAR; WATER; ATTENUATION; SATELLITE;
D O I：
10.3788/AOS202242.2429001
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
To realize the synchronous measurement of temperature and salinity of seawater, we study a data inversion method by combining frequency shift and line width of stimulated Brillouin scattering (SBS) theoretically and experimentally. Theoretically, the variations of frequency shift and line width of SBS with the changes in temperature and salinity are fitted by empirical formulas. Experimentally, the frequency shift and line width of SBS in seawater with different temperatures and salinity are measured , and then the temperature and salinity of seawater are analyzed by the theoretical inversion model. The results indicate that the simultaneous inversion of seawater temperature and salinity can he realized by the combination of frequency shift and line width of SBS. The minimum and maximum temperature inversion errors are 0.04 degrees C and 0.41 degrees C, respectively, and the minimum and maximum salinity inversion errors are 0.09% and 0. 65%, respectively.
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页数：8
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