CN111429365A - Amplitude inversion device and method for isolated waves in ocean - Google Patents
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Abstract
The invention relates to the technical field of satellite remote sensing ocean observation, and discloses an amplitude inversion device for isolated waves in ocean. According to the method, the acquisition module is arranged to acquire the internal solitary wave in a specific range, the internal solitary wave signal observation curve is acquired through a satellite or a radar, the accuracy of the internal solitary wave observation curve is greatly improved, the internal solitary wave observation curve is preprocessed, calculated and calibrated, the extraction of special parameters of the internal solitary wave is guaranteed, the internal solitary wave can be inverted through the inversion module, and the verification module and the comparison module are compared with the field actual measurement data, so that the amplitude of the internal solitary wave can be obtained more accurately, and the optimal amplitude of the internal solitary wave is obtained.
Description
Technical Field
The invention relates to the technical field of satellite remote sensing ocean observation, in particular to an amplitude inversion device and method for isolated waves in ocean.
Background
With the development of scientific technology, human beings have increasingly frequent activities in the sea. The existence of internal solitary waves in the ocean, particularly descending internal solitary waves (which occur when the water depth above the density jump layer in the ocean is less than that of the lower layer, for the convenience of description, the internal solitary waves refer to descending internal solitary waves without specific description below) can cause large-amplitude vertical fluctuation in the ocean, so that strong seawater mixing is caused, and the method is an important link for the transmission and balance of substances, momentum and energy in the ocean. Therefore, the observation and research of the solitary wave in the ocean are receiving more attention, and the amplitude of the solitary wave refers to the maximum displacement of the water proton away from the equilibrium position in the propagation process of the solitary wave in the ocean. The space-borne synthetic aperture radar does not depend on solar illumination and weather conditions, and can acquire high-resolution marine observation data all day long and all weather so as to provide fine factor information of the internal solitary wave, so the SAR becomes an important tool for acquiring the information of the internal solitary wave in the ocean. The amplitude of the internal isolated wave cannot be obtained directly through SAR image measurement and calculation, so the amplitude of the internal isolated wave is always a difficult point for inversion, but the accuracy of the amplitude of the internal isolated wave obtained through inversion is low at present.
Disclosure of Invention
The invention aims to provide an amplitude inversion device and method for an ocean internal isolated wave, and the purpose of high accuracy of the amplitude of the internal isolated wave obtained by inversion is achieved.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an isolated wave amplitude inversion unit in ocean, includes central processing unit, the central processing unit output with acquire the input signal connection of module, acquire module output and preprocessing module input signal connection, preprocessing module output and calculation module input signal connection, calculation module output and correction module input signal connection, correction module output and inversion module input signal connection, inversion module output and verification module input signal connection, verification module output and comparison module input signal connection, comparison module output and confirm module input signal connection.
Preferably, the acquisition module is configured to acquire an internal solitary wave within a specific range, and the internal solitary wave signal observation curve is acquired by a satellite or a radar.
Preferably, the inversion module establishes an internal solitary wave amplitude inversion model through a neural network algorithm.
Preferably, the neural network is a multi-layer feedforward network with error back propagation, and mainly consists of an input layer, an output layer and a hidden layer.
Preferably, the correction module performs geometric correction processing on the internal solitary wave image and intercepts a part of single solitary waves for calculation.
An amplitude inversion method of isolated waves in ocean comprises the following steps:
s101, detecting and acquiring solitary waves at a specific position to obtain an image of an internal solitary wave stripe.
And S102, preprocessing the internal solitary wave stripe image.
And S103, calculating the value of the upper water depth.
And S104, performing geometric correction processing on the image of the internal solitary wave stripe.
And S105, intercepting the single solitary wave.
And S106, carrying out inversion of the internal solitary wave parameters by using an N L S inversion model relation established by the SAR image.
And S107, checking the precision of the model, and comparing the amplitude of the internal isolated wave inverted by the model with the field actual measurement data.
And S108, obtaining the amplitude of the inner isolated wave by the minimum deviation of the comparison result.
Preferably, the distance between the brightest point and the darkest point of the internal solitary wave on the remote sensing image can be acquired while the internal solitary wave image is preprocessed in S102.
Preferably, the internal solitary wave appears on the remote sensing image as mainly bright and dark stripes, and the change of the stripes causes the change of gray scale and gradient on the image.
The invention provides an amplitude inversion device and method for isolated waves in ocean. The method has the following beneficial effects:
(1) according to the method, the acquisition module is arranged to acquire the internal solitary wave in a specific range, the internal solitary wave signal observation curve is acquired through a satellite or a radar, the accuracy of the internal solitary wave observation curve is greatly improved, the internal solitary wave observation curve is preprocessed, calculated and calibrated, the extraction of special parameters of the internal solitary wave is guaranteed, the internal solitary wave can be inverted through the inversion module, and the verification module and the comparison module are used for comparing with the field measured data, so that the obtained internal solitary wave amplitude is more accurate, and the optimal internal solitary wave amplitude is obtained.
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FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1-2, the present invention provides a technical solution: an amplitude inversion device of ocean isolated waves comprises a central processing unit, wherein the output end of the central processing unit is in signal connection with the input end of an acquisition module, the acquisition module is used for acquiring the internal isolated waves in a specific range, an observation curve of the internal isolated wave signals is acquired through a satellite or a radar, the output end of the acquisition module is in signal connection with the input end of a preprocessing module, the output end of the preprocessing module is in signal connection with the input end of a calculation module, the output end of the calculation module is in signal connection with the input end of a correction module, the correction module performs geometric correction processing on the internal isolated wave images and intercepts part of single isolated waves for calculation, the output end of the correction module is in signal connection with the input end of an inversion module, the inversion module establishes an internal isolated wave amplitude inversion model through a neural network algorithm, and the neural network is a multilayer feedforward, mainly comprises an input layer, an output layer and a hidden layer, wherein the output end of the inversion module is in signal connection with the input end of the verification module, the output end of the verification module is in signal connection with the input end of the comparison module, the output end of the comparison module is in signal connection with the input end of the determination module, the acquisition module is arranged to acquire the internal solitary wave in a specific range, the internal solitary wave signal observation curve is acquired by a satellite or a radar, the accuracy of the internal solitary wave observation curve is greatly improved, the internal solitary wave observation curve is preprocessed, calculated and calibrated to ensure the extraction of special parameters of the internal solitary wave, the internal solitary wave can be inverted by the inversion module, and the comparison module and the verification module are compared with the on-site actual measurement data, therefore, the amplitude of the internal isolated wave can be obtained more accurately, and the optimal amplitude of the internal isolated wave can be obtained.
An amplitude inversion method of isolated waves in ocean comprises the following steps:
s101, detecting and acquiring solitary waves at a specific position to obtain an image of an internal solitary wave stripe.
S102, preprocessing the internal solitary wave stripe image, and acquiring the distance between the brightest point and the darkest point of the internal solitary wave on the remote sensing image while preprocessing the internal solitary wave image, wherein the internal solitary wave is mainly expressed as bright and dark stripes on the remote sensing image, and the change of the stripes can cause the change of the gray level and the gradient on the image.
And S103, calculating the value of the upper water depth.
And S104, performing geometric correction processing on the image of the internal solitary wave stripe.
And S105, intercepting the single solitary wave.
And S106, carrying out inversion of the internal solitary wave parameters by using an N L S inversion model relation established by the SAR image.
And S107, checking the precision of the model, and comparing the amplitude of the internal isolated wave inverted by the model with the field actual measurement data.
And S108, obtaining the amplitude of the inner isolated wave by the minimum deviation of the comparison result.
When the device is used, the internal solitary wave within a specific range is obtained through the obtaining module, the internal solitary wave is preprocessed through the preprocessing module, the internal solitary wave is corrected after being calculated through the calculating module, then the internal solitary wave parameter is inverted through the inverting module, the obtained internal solitary wave parameter is compared with field actual measurement data through the comparing module, the determining module determines that the comparison deviation is small, and the amplitude of the internal solitary wave can be obtained.
In summary, the acquisition module is arranged to acquire the internal solitary wave within a specific range, the internal solitary wave signal observation curve is acquired through a satellite or a radar, the accuracy of the internal solitary wave observation curve is greatly improved, the internal solitary wave observation curve is preprocessed, calculated and calibrated, the extraction of special parameters of the internal solitary wave is guaranteed, the internal solitary wave can be inverted through the inversion module, and the verification module and the comparison module are used for comparing with the field measured data, so that the amplitude of the internal solitary wave can be obtained more accurately, and the optimal amplitude of the internal solitary wave can be obtained.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an isolated wave amplitude inversion device in ocean which includes central processing unit, its characterized in that: the output end of the central processing unit is in signal connection with the input end of the acquisition module, the output end of the acquisition module is in signal connection with the input end of the preprocessing module, the output end of the preprocessing module is in signal connection with the input end of the calculation module, the output end of the calculation module is in signal connection with the input end of the correction module, the output end of the correction module is in signal connection with the input end of the inversion module, the output end of the inversion module is in signal connection with the input end of the verification module, the output end of the verification module is in signal connection with the input end of the comparison module, and.
2. The apparatus of claim 1, wherein: the acquisition module is used for acquiring the internal solitary wave in a specific range, and the internal solitary wave signal observation curve is acquired through a satellite or a radar.
3. The apparatus of claim 1, wherein: the inversion module establishes an inner isolated wave amplitude inversion model through a neural network algorithm.
4. The apparatus of claim 3, wherein: the neural network is a multilayer feedforward network with error back propagation and mainly comprises an input layer, an output layer and a hidden layer.
5. The apparatus of claim 1, wherein: the correction module performs geometric correction processing on the solitary wave image and intercepts a part of single solitary waves for calculation.
6. An amplitude inversion method of isolated waves in ocean comprises the following steps:
s101, detecting and acquiring solitary waves at a specific position to obtain an image of an internal solitary wave stripe;
s102, preprocessing the internal solitary wave stripe image;
s103, calculating the value of the upper water depth;
s104, performing geometric correction processing on the image of the intra-solitary wave stripe;
s105, intercepting a single solitary wave;
s106, carrying out inversion of the internal solitary wave parameters by using an N L S inversion model relation established by the SAR image;
s107, checking the precision of the model, and comparing the amplitude of the internal isolated wave inverted by the model with the field measured data;
and S108, obtaining the amplitude of the inner isolated wave by the minimum deviation of the comparison result.
7. The method for inverting the amplitude of the solitary wave in the ocean according to claim 1, wherein: and preprocessing the internal solitary wave image in the S102 and simultaneously acquiring the distance between the brightest point and the darkest point of the internal solitary wave on the remote sensing image.
8. The method of claim 7, wherein the method comprises: the internal solitary wave is mainly represented as bright and dark stripes on a remote sensing image, and the change of the stripes can cause the change of gray scale and gradient on the image.
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Cited By (6)
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| CN112113545A (en) * | 2020-09-17 | 2020-12-22 | 中国科学院海洋研究所 | Inner wave amplitude inversion method based on multi-dimensional sea surface information |
| CN112115406A (en) * | 2020-09-28 | 2020-12-22 | 自然资源部第二海洋研究所 | Ocean internal mesoscale vortex inversion method and system based on remote sensing sea surface data |
| CN113406006A (en) * | 2021-06-11 | 2021-09-17 | 中国海洋大学 | Method for detecting amplitude of second-mode convex-type internal isolated wave |
| CN113640800A (en) * | 2021-08-25 | 2021-11-12 | 中国人民解放军海军潜艇学院 | Inversion method for inverting isolated wave data in ocean |
| CN114662300A (en) * | 2022-03-11 | 2022-06-24 | 中国人民解放军32021部队 | Deep sea intensity nonlinear internal wave amplitude inversion method based on satellite remote sensing image |
| CN118114030A (en) * | 2024-04-28 | 2024-05-31 | 中国科学院南海海洋研究所 | Internal solitary wave parameter extraction algorithm based on single-point single-depth current meter data |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112113545A (en) * | 2020-09-17 | 2020-12-22 | 中国科学院海洋研究所 | Inner wave amplitude inversion method based on multi-dimensional sea surface information |
| CN112113545B (en) * | 2020-09-17 | 2021-08-31 | 中国科学院海洋研究所 | Inner wave amplitude inversion method based on multi-dimensional sea surface information |
| CN112115406A (en) * | 2020-09-28 | 2020-12-22 | 自然资源部第二海洋研究所 | Ocean internal mesoscale vortex inversion method and system based on remote sensing sea surface data |
| CN112115406B (en) * | 2020-09-28 | 2024-01-12 | 自然资源部第二海洋研究所 | Ocean internal mesoscale vortex inversion method and system based on remote sensing sea surface data |
| CN113406006A (en) * | 2021-06-11 | 2021-09-17 | 中国海洋大学 | Method for detecting amplitude of second-mode convex-type internal isolated wave |
| CN113406006B (en) * | 2021-06-11 | 2022-07-01 | 中国海洋大学 | Method for detecting amplitude of second-mode convex-type internal isolated wave |
| CN113640800A (en) * | 2021-08-25 | 2021-11-12 | 中国人民解放军海军潜艇学院 | Inversion method for inverting isolated wave data in ocean |
| CN113640800B (en) * | 2021-08-25 | 2023-07-28 | 中国人民解放军海军潜艇学院 | Inversion method for inverting ocean solitary wave data |
| CN114662300A (en) * | 2022-03-11 | 2022-06-24 | 中国人民解放军32021部队 | Deep sea intensity nonlinear internal wave amplitude inversion method based on satellite remote sensing image |
| CN118114030A (en) * | 2024-04-28 | 2024-05-31 | 中国科学院南海海洋研究所 | Internal solitary wave parameter extraction algorithm based on single-point single-depth current meter data |
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