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Underwater temperature remote-sensing measurement method and system

A measurement method and technology of measurement system, which are applied in thermometers, heat measurement, measurement devices, etc., can solve the problems of mixed noise of scattered spectrum images and affect the accuracy of remote sensing measurement of water temperature, so as to improve measurement accuracy, ensure measurement stability, The effect of reducing the impact

Active Publication Date: 2018-12-21
EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, provide a method for underwater temperature remote sensing measurement, solve the technical problem of mixed noise in the scattering spectrum image in the prior art, and affect the accuracy of water favorite temperature remote sensing measurement

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Embodiment 1

[0019] like figure 1 As shown, Embodiment 1 of the present invention provides an underwater temperature remote sensing measurement method, comprising the following steps:

[0020] Step S1, obtaining a scattering spectrum of Rayleigh Brillouin scattering in the water area to be measured;

[0021] Step S2, selecting multiple groups of equal-signal-to-noise ratio scattering spectrograms with equal signal-to-noise ratios, and calculating the average Brillouin linewidth and the average Brillouin frequency shift of the multiple groups of said equal-signal-to-noise ratio scattering spectrograms;

[0022] Step S3, using the average value of the Brillouin line width or the average value of the Brillouin frequency shift to perform temperature inversion to obtain the temperature of the water area to be measured.

[0023] The invention greatly reduces the influence of noise signals on the measurement results of underwater temperature remote sensing through the method of averaging the Bri...

Embodiment 2

[0035] like figure 2 As shown, Embodiment 2 of the present invention provides an underwater temperature remote sensing measurement system, comprising a scattering spectrogram acquiring device 1 and a processor 2, and the scattering spectrogram acquiring device 1 is electrically connected to the processor 2;

[0036] The device 1 for obtaining a scattering spectrum diagram is used to obtain a scattering spectrum diagram of Rayleigh-Brillouin scattering in the water area to be measured;

[0037] The processor 2 is configured to select multiple groups of equal-signal-to-noise ratio scattering spectrograms with equal signal-to-noise ratios, and calculate the average Brillouin linewidth and Brillouin frequency shift of the multiple groups of the equal-signal-to-noise ratio scattering spectrograms Average value; use the average value of the Brillouin line width or the average value of the Brillouin frequency shift to perform temperature inversion to obtain the temperature of the wa...

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Abstract

The invention discloses an underwater temperature remote-sensing measurement method. The method comprises the steps that S1, a scattering spectrogram of Rayleigh-Brillouin scattering of a to-be-measured water area is acquired; S2, multiple groups of equal-signal-to-noise-ratio scattering spectrograms with equal signal-to-noise ratios are selected, and a Brillouin line width average value and a Brillouin frequency shift average value of the multiple groups of equal-signal-to-noise-ratio scattering spectrograms are calculated; and S3, the Brillouin line width average value or the Brillouin frequency shift average value is utilized to perform temperature retrieval, and the temperature of the to-be-measured water area is obtained. The underwater temperature remote-sensing measurement method has high precision and high instantaneity.

Description

technical field [0001] The invention relates to the technical field of underwater temperature remote sensing, in particular to an underwater temperature remote sensing measurement method and system. Background technique [0002] Brillouin scattering is the phenomenon of inelastic scattering of light due to density fluctuations in a medium. This medium density fluctuation also causes a change in the frequency of the photon, which is reflected in the frequency spectrum as a frequency shift relative to the incident photon. When a large number of photons of the same frequency are incident on the medium in the same direction, the scattered light will not only have a Brillouin frequency shift, but also have a broadening effect due to the interaction with the atoms or molecules of the medium. Brillouin scattering peaks whose frequencies are shifted, and seawater temperature can be obtained from the Brillouin scattering peaks. [0003] For practical applications, the received scat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/32G01K11/322
CPCG01K11/32G01K11/322
Inventor 梁琨周波许佳琪王元庆
Owner EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH
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