CN104614348A - Three-dimensional remote sensing detection method for marine water quality - Google Patents
Three-dimensional remote sensing detection method for marine water quality Download PDFInfo
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- CN104614348A CN104614348A CN201510057139.4A CN201510057139A CN104614348A CN 104614348 A CN104614348 A CN 104614348A CN 201510057139 A CN201510057139 A CN 201510057139A CN 104614348 A CN104614348 A CN 104614348A
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Abstract
The invention discloses a three-dimensional remote sensing detection method for marine water quality. The three-dimensional remote sensing detection method comprises the following detection steps: starting a computer, a laser device, a signal acquiring device ICCD and a numerical control rotation shaft, and moving a first guide rail and a second guide rail on a guide rail arm; sequentially increasing the laser collection depth and acquiring strongest simulated brillouin scattering signals in each layer by the computer; gathering the acquired simulated brillouin scattering signals by the computer, and drawing a distribution map of the simulated brillouin scattering signals in a two-dimensional space, thereby calibrating the signal-to-noise ratio of the simulated brillouin scattering signals in different positions; and finally analyzing the signal-to-noise ratio of the simulated brillouin scattering signals in a large-range sea area, thereby implementing three-dimensional remote sensing detection on the marine water quality. By virtue of the three-dimensional remote sensing detection method for marine water quality, the long-distance marine water quality is evaluated in advance when the remote sensing detection is carried out on the marine water quality, and then the detailed sampling analysis is carried out in the water area which exceeds the predetermined value.
Description
Technical field
The present invention relates to a kind of marine optics Detection Techniques, particularly ocean water quality 3 D Remote Sensing detection method.
Background technology
To the monitoring of ocean water quality, the general seawater of sampling method to a certain specified sea areas that use samples, and then carries out assay by laboratory.No matter be adopt loaded down with trivial details chemical analysis, or spectrographic method is faster analyzed in employing, all can not accomplish the Real-Time Monitoring to ocean water quality.
Chinese patent (publication number: CN 201589748 U) proposes a kind of water quality detector for seawater, be provided with supporting seat, in supporting seat, rotating disk is installed, in rotating disk, engaging has right avertence light microscopic, and supporting seat side is provided with the left avertence light microscopic parallel with right avertence light microscopic, is connected with spring between the holder of left avertence light microscopic and supporting seat prop up, on the left of left avertence light microscopic, illuminating lamp is installed, be provided with light sensor on the right side of right avertence light microscopic, the output terminal of photoelectric commutator is connected with loudspeaker, and power supply is that illuminating lamp and photoelectric commutator are powered.Analysis speed is fast, equipment needed thereby cost is low.But the sampling that this pick-up unit is still confined to ocean water quality detects, and can not realize the monitoring on a large scale of ocean water quality.
Chinese patent (publication number: CN 101587115 B) proposes a kind of abnormal water quality detecting device, abnormal water quality detecting device possesses water temperature adjusting gear, it detects the presence or absence of its water quality exception under the state that detected water is remained the temperature range preset, this water temperature adjusting gear controls as the temperature adjustment water close to the temperature of described temperature range to surrounding's supply of the incoming line of detected water, utilize the heat transfer by described incoming line, make the temperature of detected water close to the temperature of described temperature adjustment water.Consequently, due to the generation of the bubble measured in groove can be prevented, and the temperature of detected water is remained specialized range, therefore can prevent the false alarm of " water quality is abnormal " caused by bubble or low temperature etc.But this device can not be applicable to the remote sensing monitoring of ocean water quality equally.
Summary of the invention
The object of this invention is to provide a kind of ocean water quality 3 D Remote Sensing probe method, it can be assessed in advance to remote ocean water body quality, then carries out detailed sample analysis to the waters exceeding predetermined value, to realize the Real-Time Monitoring to ocean water quality.
The present invention realizes above-mentioned purpose by the following technical solutions.Seawater quality 3 D Remote Sensing detection method, comprise 3 D Remote Sensing sniffer, described 3 D Remote Sensing sniffer has computing machine, described computing machine is by data line connecting laser respectively, signal picker ICCD, numerical control rotating shaft, first guide rail is connected with the second guide rail, concavees lens are connected with the first guide rail, first convex lens are connected with the second guide rail, concavees lens and the first convex lens coaxial, orbital arm is L-shaped, its one end linking number control rotating shaft, other end armed lever is connected to the first guide rail and the second guide rail, the second catoptron is equipped with in numerical control rotating shaft, second 45 °, catoptron side place is provided with concavees lens, opposite side 45 ° of places are provided with the first catoptron, half-wave plate, polaroid and quarter-wave plate is disposed with between laser instrument to the first catoptron, 45 °, the side place of polaroid is disposed with the second convex lens, slit, the 3rd convex lens, F-P etalon and telephoto lens, and telephoto lens is connected with signal picker ICCD,
Its detection steps is as follows:
1) be arranged on monitoring ship by 3 D Remote Sensing sniffer, start-up simulation machine, laser instrument, signal picker ICCD and numerical control rotating shaft, the first guide rail and the second guide rail move in rail arms;
2) the first guide rail and the second guide rail move in rail arms, drive concavees lens and the first convex lens to move simultaneously, regulate the position of concavees lens and the first convex lens to make laser converge to the shallow water along the coast, the stimulated Brillouin scattering signal that computer acquisition is now the strongest;
3) regulate further the position of concavees lens and the first convex lens, the degree of depth that laser is assembled increases successively, computing machine be captured in respectively at all levels the strongest stimulated Brillouin scattering signal;
4) numerical control rotating shaft rotates counterclockwise, and drives the second catoptron, orbital arm, the first guide rail, the second guide rail, concavees lens and the first convex lens to rotate together;
5) step 2 is repeated) and step 3);
6) numerical control rotating shaft rotates clockwise, and when numerical control rotating shaft rotates, related second catoptron, orbital arm, the first guide rail, the second guide rail, concavees lens and the first convex lens rotate together;
7) step 2 is repeated) and step 3);
8) the stimulated Brillouin scattering signal of collection gathers by computing machine, and draws out the stimulated Brillouin scattering signal distribution plots in two-dimensional space, and then calibrates the stimulated Brillouin scattering signal to noise ratio (S/N ratio) of diverse location;
9) monitoring ship migration in marine site repeats above-mentioned steps 2 simultaneously) to step 8), the analysis of stimulated Brillouin scattering Signal-to-Noise in marine site on a large scale finally can be completed, thus realize the 3 D Remote Sensing detection of ocean water quality.
Further, the strongest described stimulated Brillouin scattering signal makes laser converge to this measurement waters and the stimulated Brillouin scattering signal excited by concavees lens and the first convex lens.
Further, described step 3), its principle is the stimulated Brillouin scattering signal of record bit depth and successively progressively increases investigation depth with this unit depth, draws out the brillouin scattering signal data of different depth.
Further, when analyzing the data of stimulated Brillouin scattering signal, signal to noise ratio (S/N ratio) by analyzing stimulated Brillouin scattering signal detects sea water advanced, its principle be ocean water quality good time the signal to noise ratio (S/N ratio) of stimulated Brillouin scattering signal that produces high, and the signal to noise ratio (S/N ratio) of the stimulated Brillouin scattering signal produced when ocean water quality is poor is low.
The invention has the advantages that, avoid the blindness of tradition sampling and detect the little limitation of waters scope, when carrying out the remote sensing of ocean water quality, can assess in advance remote ocean water body quality, again detailed sample analysis is carried out to the waters exceeding predetermined value, can to the Real-Time Monitoring of ocean water quality.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of 3 D Remote Sensing sniffer in the present invention.
Fig. 2 is the numerical control rotating shaft of the present invention index path that laser beam is assembled when not rotating.
Fig. 3 is the numerical control rotating shaft of the present invention index path that laser beam is assembled when being rotated counterclockwise.
Fig. 4 is the numerical control rotating shaft of the present invention index path that laser beam is assembled when turning clockwise.
Fig. 5 is signal to noise ratio (S/N ratio) and the investigation depth graph of a relation of the stimulated Brillouin scattering signal that on vertical direction, different depth produces.
In figure: 1. computing machine, 2. laser instrument, 3. half-wave plate, 4. polaroid, 5. quarter-wave plate, 6. the first catoptron, 7. the second catoptron, 8. numerical control rotating shaft, 9. rail arms, 10. the first guide rail, 11. second guide rails, 12. first convex lens, 13. concavees lens, 14. second convex lens, 15. slits, 16. the 3rd convex lens, 17.F-P etalon, 18. telephoto lenses, 19. signal picker ICCD.
Embodiment
Now the invention will be further described with reference to the accompanying drawings.See Fig. 1, seawater quality 3 D Remote Sensing detection method, comprise 3 D Remote Sensing sniffer, it is characterized in that, described 3 D Remote Sensing sniffer has computing machine 1, described computing machine 1 is by data line connecting laser 2 respectively, signal picker ICCD19, numerical control rotating shaft 8, first guide rail 10 is connected 11 with the second guide rail, concavees lens 13 are connected with the first guide rail 10, first convex lens 12 are connected with the second guide rail 11, concavees lens 13 and the first convex lens 12 coaxial, orbital arm 9 is L-shaped, its one end linking number control rotating shaft 8, other end armed lever is connected to the first guide rail 10 and the second guide rail 11, the second catoptron 7 is equipped with in numerical control rotating shaft 8, second 45 °, catoptron 7 side place is provided with concavees lens 13, opposite side 45 ° of places are provided with the first catoptron 6, half-wave plate 3, polaroid 4 and quarter-wave plate 5 is disposed with between laser instrument 2 to the first catoptron 6,45 °, the side place of polaroid 4 is disposed with the second convex lens 14, slit 15, the 3rd convex lens 16, F-P etalon 17 and telephoto lens 18, and telephoto lens 18 is connected with signal picker ICCD19,
Its detection steps is as follows:
1) be arranged on monitoring ship by 3 D Remote Sensing sniffer, monitoring ship is docked in a certain marine site, start-up simulation machine 1, laser instrument 2, signal picker ICCD19 and numerical control rotating shaft 8, first guide rail 10 and the second guide rail 11 move in rail arms 9;
2) the first guide rail 10 and the second guide rail 11 move in rail arms 9, drive concavees lens 13 and the first convex lens 12 to move simultaneously, the position of concavees lens 13 and the first convex lens 12 is regulated to make laser vertically inject and converge to the shallow water along the coast, the stimulated Brillouin scattering signal that computer acquisition is now the strongest, this scattered signal is exactly the stimulated Brillouin scattering signal that this waters produces;
3) regulate further the position of concavees lens 13 and the first convex lens 12, the degree of depth that laser is assembled increases successively, computing machine be captured in respectively at all levels the strongest stimulated Brillouin scattering signal;
4) numerical control rotating shaft 8 rotates counterclockwise, and drives the second catoptron 7, orbital arm 9, first guide rail 10, second guide rail 11, concavees lens 13 and the first convex lens 12 to rotate together;
5) step 2 is repeated) and step 3);
6) numerical control rotating shaft 8 rotates clockwise, and when numerical control rotating shaft 8 rotates, related second catoptron 7, orbital arm 9, first guide rail 10, second guide rail 11, concavees lens 13 and the first convex lens 12 rotate together;
7) step 2 is repeated) and step 3);
8) the stimulated Brillouin scattering signal of collection gathers by computing machine, and draws out the stimulated Brillouin scattering signal distribution plots in two-dimensional space, and then calibrates the stimulated Brillouin scattering signal to noise ratio (S/N ratio) of diverse location;
9) monitoring ship migration in marine site repeats above-mentioned steps simultaneously, finally can complete the analysis of stimulated Brillouin scattering Signal-to-Noise in marine site on a large scale, thus realizes the 3 D Remote Sensing detection of ocean water quality.
The described detection of the method by stimulated Brillouin scattering Signal-to-Noise ocean water quality, its principle: the decay of different quality to light is different, for the seawater quality of standard, the signal to noise ratio (S/N ratio) of stimulated Brillouin scattering signal reduces with the increase of investigation depth, but the signal to noise ratio (S/N ratio) of different quality generation stimulated Brillouin scattering signal has respective characteristic curve with the change of investigation depth, by distinguishing that different characteristic curvees realizes the assessment in advance to remote ocean water body quality, again detailed sample analysis is carried out to the waters exceeding predetermined value, thus avoid blindness and the randomness of tradition sampling.
embodiment:fig. 2 is the numerical control rotating shaft of the present invention index path that laser beam is assembled when not rotating.When numerical control rotating shaft 8 does not rotate, laser beam is vertically injected in seawater, the adjustment of the spacing of the first convex lens 12 that the concavees lens 13 driven by the first guide rail 10 and the second guide rail 11 are driven, the different depth marine site realizing in the vertical direction laser beam is assembled, and measures the stimulated Brillouin scattering signal excited under different depth simultaneously and draws out the curve relation figure of this direction stimulated Brillouin scattering Signal-to-Noise and investigation depth.
Fig. 3 is the numerical control rotating shaft of the present invention index path that laser beam is assembled when being rotated counterclockwise.When numerical control rotating shaft 8 is rotated counterclockwise, laser beam is injected in seawater with different angles, the adjustment of the spacing of the first convex lens 12 that the concavees lens 13 driven by the first guide rail 10 and the second guide rail 11 are driven, the different depth marine site realizing laser beam on different angles direction is assembled, and measures the stimulated Brillouin scattering signal excited under all angles different depths simultaneously and draws out the curve relation figure of this direction stimulated Brillouin scattering Signal-to-Noise and investigation depth.
Fig. 4 is the numerical control rotating shaft of the present invention index path that laser beam is assembled when turning clockwise.When numerical control rotating shaft 8 turns clockwise, laser beam is injected in seawater with different angles, the adjustment of the spacing of the first convex lens 12 that the concavees lens 13 driven by the first guide rail 10 and the second guide rail 11 are driven, the different depth marine site realizing laser beam on different angles direction is assembled, and measures the stimulated Brillouin scattering signal excited under all angles different depths simultaneously and draws out the curve relation figure of this direction stimulated Brillouin scattering Signal-to-Noise and investigation depth.
Fig. 5 is signal to noise ratio (S/N ratio) and the investigation depth graph of a relation of the stimulated Brillouin scattering signal that on vertical direction, different depth produces.Point in figure is the signal to noise ratio (S/N ratio) of the stimulated Brillouin scattering signal gathering corresponding sea water advanced generation, degree of depth vertical direction detecting seawater is identical with incident laser light path in the seawater, and namely Fig. 5 also can be expressed as signal to noise ratio (S/N ratio) and the investigation depth graph of a relation of the stimulated Brillouin scattering signal that incident laser on vertical direction in the seawater different light path produces.When numerical control rotating shaft 8 rotates
during angle, investigation depth and incident laser light path is in the seawater not identical, meets relational expression and is:
(h: investigation depth, L: incident laser light path in the seawater,
: the anglec of rotation).Therefore, rotation is worked as
during angle, Fig. 5 is only just incident laser light path in the seawater and the graph of a relation of stimulated Brillouin scattering Signal-to-Noise, when converting the graph of a relation of investigation depth and stimulated Brillouin scattering signal to noise ratio (S/N ratio) to, curve will to left, and namely the investigation depth of in the vertical direction will be multiplied by the cosine of the anglec of rotation:
.
Claims (4)
1. seawater quality 3 D Remote Sensing detection method, comprise 3 D Remote Sensing sniffer, it is characterized in that, described 3 D Remote Sensing sniffer has computing machine, described computing machine is by data line connecting laser respectively, signal picker ICCD, numerical control rotating shaft, first guide rail is connected with the second guide rail, concavees lens are connected with the first guide rail, first convex lens are connected with the second guide rail, concavees lens and the first convex lens coaxial, orbital arm is L-shaped, its one end linking number control rotating shaft, other end armed lever is connected to the first guide rail and the second guide rail, the second catoptron is equipped with in numerical control rotating shaft, second 45 °, catoptron side place is provided with concavees lens, opposite side 45 ° of places are provided with the first catoptron, half-wave plate, polaroid and quarter-wave plate is disposed with between laser instrument to the first catoptron, 45 °, the side place of polaroid is disposed with the second convex lens, slit, the 3rd convex lens, F-P etalon and telephoto lens, and telephoto lens is connected with signal picker ICCD,
Its detection steps is as follows:
1) be arranged on monitoring ship by 3 D Remote Sensing sniffer, start-up simulation machine, laser instrument, signal picker ICCD and numerical control rotating shaft, the first guide rail and the second guide rail move in rail arms;
2) the first guide rail and the second guide rail move in rail arms, drive concavees lens and the first convex lens to move simultaneously, regulate the position of concavees lens and the first convex lens to make laser converge to the shallow water along the coast, the stimulated Brillouin scattering signal that computer acquisition is now the strongest;
3) regulate further the position of concavees lens and the first convex lens, the degree of depth that laser is assembled increases successively, computing machine be captured in respectively at all levels the strongest stimulated Brillouin scattering signal;
4) numerical control rotating shaft rotates counterclockwise, and drives the second catoptron, orbital arm, the first guide rail, the second guide rail, concavees lens and the first convex lens to rotate together;
5) step 2 is repeated) and step 3);
6) numerical control rotating shaft rotates clockwise, and when numerical control rotating shaft rotates, related second catoptron, orbital arm, the first guide rail, the second guide rail, concavees lens and the first convex lens rotate together;
7) step 2 is repeated) and step 3);
8) the stimulated Brillouin scattering signal of collection gathers by computing machine, and draws out the stimulated Brillouin scattering signal distribution plots in two-dimensional space, and then calibrates the stimulated Brillouin scattering signal to noise ratio (S/N ratio) of diverse location;
9) monitoring ship migration in marine site repeats above-mentioned steps 2 simultaneously) to step 8), the analysis of stimulated Brillouin scattering Signal-to-Noise in marine site on a large scale finally can be completed, thus realize the 3 D Remote Sensing detection of ocean water quality.
2. seawater quality 3 D Remote Sensing detection method according to claim 1, it is characterized in that, the strongest described stimulated Brillouin scattering signal makes laser converge to this measurement waters and the stimulated Brillouin scattering signal excited by concavees lens and the first convex lens.
3. seawater quality 3 D Remote Sensing detection method according to claim 1, it is characterized in that, described step 3), its principle is the stimulated Brillouin scattering signal of record bit depth and successively progressively increases investigation depth with this unit depth, draws out the brillouin scattering signal data of different depth.
4. seawater quality 3 D Remote Sensing detection method according to claim 1, it is characterized in that, when analyzing the data of stimulated Brillouin scattering signal, signal to noise ratio (S/N ratio) by analyzing stimulated Brillouin scattering signal detects sea water advanced, its principle be ocean water quality good time the signal to noise ratio (S/N ratio) of stimulated Brillouin scattering signal that produces high, and the signal to noise ratio (S/N ratio) of the stimulated Brillouin scattering signal produced when ocean water quality is poor is low.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108051108A (en) * | 2017-11-30 | 2018-05-18 | 华中科技大学鄂州工业技术研究院 | A kind of seawater temp measuring system and method based on low pulse energy Gao Zhongying laser |
| CN109884030A (en) * | 2019-03-12 | 2019-06-14 | 牛建国 | A kind of food/pharmaceutical safety distinguishing apparatus using laser |
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| CN109884030A (en) * | 2019-03-12 | 2019-06-14 | 牛建国 | A kind of food/pharmaceutical safety distinguishing apparatus using laser |
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