Remote sensing to ocean by using Brillouin scattering: test of sound speed and submerged object

Dahe Liu; Jianfeng Xu; Huaying Wang; Jing Zhou

doi:10.1117/12.403839

10 October 2000 Remote sensing to ocean by using Brillouin scattering: test of sound speed and submerged object

Dahe Liu, Jianfeng Xu, Huaying Wang, Jing Zhou

Proceedings Volume 4222, Process Control and Inspection for Industry; (2000) https://doi.org/10.1117/12.403839
Event: Optics and Optoelectronic Inspection and Control: Techniques, Applications, and Instruments, 2000, Beijing, China

Abstract

The laboratory experimental test of sound speed for fresh water and typical salt water (salinity Sequals35%) are reported for different water temperatures. Considering that the returned signal contains both Rayleigh and Brillouin peak (which have Gaussian and Lorentzian line shapes respectively), the measured data are fitted by mixed function of Gaussian and Lorentzian. Then, the sound speed is obtained by Brillouin shift that is determined with FSR of the Fabry-Perot. For the testing of submerged object, it has fewer requirements on the accuracy. The experimental results without and with submerged object are given. All results show that Brillouin scattering is a good method for measuring sound speed in water and for testing of submerged object.

Citation Download Citation

Dahe Liu, Jianfeng Xu, Huaying Wang, and Jing Zhou "Remote sensing to ocean by using Brillouin scattering: test of sound speed and submerged object", Proc. SPIE 4222, Process Control and Inspection for Industry, (10 October 2000); https://doi.org/10.1117/12.403839

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