CN104568846B - Two-dimensional scan detection method for sea water halocline based on brillouin scattering - Google Patents
Two-dimensional scan detection method for sea water halocline based on brillouin scattering Download PDFInfo
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Abstract
The invention discloses a two-dimensional scan detection method for sea water halocline based on brillouin scattering. The emergent ray of a laser device is coaxial with the axes of a half-wave plate, a polarizing film and a quarter-wave plate and orderly transmits through the half-wave plate, the polarizing film and the quarter-wave plate; a numerical control rotating shaft is mounted on the front end of the quarter-wave plate and a first plane mirror is inlaid in the numerical control rotating shaft; a second plane mirror, a first convex lens, a slit, a second convex lens, an F-P etalon and a camera lens; the camera lens is abutted with the ICCD; a computer is connected with and synchronously controls the laser device, the ICCD and the numerical control rotating shaft. During maritime remote sensing, laser is incident into sea water to generate brillouin scattering signals different in depth immediately, and the effects of quick response and good timeliness are achieved; sea water salinity distribution detection in the depth and breadth of a two-dimensional plane is performed on a deep sea area, and the two-dimensional scan detection of the sea water halocline can be performed on the deep water area to meet the detection requirements on the halocline of a sea area around an underwater submarine.
Description
Technical field
The present invention relates to a kind of photon detection technology, particularly to a kind of two dimension based on Brillouin scattering seawater halocline
Scanning detection method.
Background technology
Detection to Yu Haiyang, for now, mainly has two kinds of detection methods, i.e. acoustic sounding method and optical detection
Method.The relative maturity of acoustic sounding method development simultaneously applies the fields such as target acquisition under water, identification, but for changeable ocean
Environment can not meet people's needs with the complicated relative single acoustic detection of characteristic of ocean.Although existing optical detection methods
Have been presented for the detection of one-dimensional space inland sea salinity water, but the detection of one-dimensional space inland sea salinity water can not meet engineering technology
On needs, especially can not meet and need the demand of real-time detection surrounding space marine site seawater halocline as submarine is this kind of.
In ocean, its density of the seawater of different depth is also not quite similar, due to the skewness of seawater salinity and temperature, sea
The density of water also and differs.Salinity adaptability area is referred to as halocline, and halocline can lead to sound wave to be rolled in transmitting procedure
Situations such as penetrate, reflect, therefore often is used for hiding itself whereabouts by submarine, hides the search of surface ship sonar.But halocline area
The neighbouring density of sea water in domain is simultaneously unstable.Under normal conditions, seawater can uprise with the increase of depth, therefore in temperature and salt
On degree spring layer line of demarcation, it is that lower section density of sea water is larger mostly.In rare cases, temperature and halocline lower part there sea
Water density is less, if submarine is to reduce ship noise to cut out engine and be in suspended state, below its dive to halocline
When it is possible to cause that submarine is rapid to be sunk to causing contingency.Therefore accurately judge that the position of halocline is particularly important.
Content of the invention
It is an object of the invention to provide a kind of detection method, it can do two-dimensional scan and detect and draw and go to sea to seawater salinity
Water halocline, seawater salinity distribution deep-sea marine site done in the depth and range of two dimensional surface detects, and realizes halocline position
Accurate judgement.
The present invention employs the following technical solutions and realizes above-mentioned purpose.Two-dimensional scan based on Brillouin scattering seawater halocline
The axis co-axial of probe method, the emergent ray of laser instrument and half-wave plate, polarizer and quarter-wave plate simultaneously passes through half-wave successively
Piece, polarizer and quarter-wave plate, quarter-wave plate front end studs with the first level crossing equipped with numerical control rotating shaft, numerical control rotating shaft；
The side of polarizer is sequentially arranged with the second level crossing, the first convex lens, slit, the second convex lens, F-P etalon and camera lens, mirror
Head is docked with ICCD, and the first convex lens, slit, the second convex lens, F-P etalon, camera lens and ICCD are in position coaxial；
Computer connects and Synchronization Control laser instrument, ICCD and numerical control rotating shaft；
Its step is as follows：
1) pass through computer starting laser instrument, ICCD and control numerical control rotating shaft, make to be embedded in first above numerical control rotating shaft
Level crossing and laser beam are in 45° angle, and laser beam is vertically injected in seawater；
2) ICCD records the brillouin scattering signal of different depth seawater, and draws out one-dimensional brillouin scattering signal
Data；
3) numerical control rotating shaft makes the first level crossing rotate counterclockwise, and now the direction in laser beam directive seawater is also revolved counterclockwise
Turn；
4) ICCD records the brillouin scattering signal of different depth seawater in each angle, and draws out all angles
On one-dimensional brillouin scattering signal data；
5) numerical control rotating shaft makes the first level crossing reply 45 ° of the initial angle with laser beam；
6) numerical control rotating shaft makes the first level crossing turn clockwise, now the direction also dextrorotation in laser beam directive seawater
Turn；
7) repeat step 4)；
8) by step 2), 4) and 7) the one-dimensional brillouin scattering signal data that obtains is depicted as two-dimentional brillouin scattering signal
Data, and the seawater salinity variation diagram of two dimension is drawn by the frequency shift amount or live width amount calculating brillouin scattering signal.
Further, during the described ICCD brillouin scattering signal that different depth seawater produces on recording all angles,
The computer controls ICCD record time is adjusted to：
In formula：T light is propagated in a device and is recorded the consumed time；
Η seawater investigation depth；
H signal depth at different levels is poor；
t0Light propagates the time being consumed during h in the seawater；
β first level crossing turns to, by position I, the angle that position II deflects.
It is an advantage of the current invention that when carrying out ocean remote sensing detection, laser is injected in seawater and just can be produced not at once
With the brillouin scattering signal of depth, it is swift in response, ageing strong；Deep-sea marine site can be done in the depth and range of two dimensional surface
Seawater salinity distribution detect, can by deep-sea marine site is done seawater halocline two-dimensional scan detect, meet underwater submarine institute
The detection of place's surrounding sea halocline needs.
Brief description
Fig. 1 be in the present invention schematic device of seawater halocline two-dimensional scan probe method (in figure dotted line represents：Connect number
According to line；Solid line represents：Laser beam；Dotted arrow represents：Incident light propagation direction；Solid arrow represents：Flashlight propagation side
To).
Fig. 2 is the index path of laser on the first level crossing during numerical control rotating shaft rotate counterclockwise in the present invention.
Fig. 3 is the index path of laser on the first level crossing when numerical control rotating shaft turns clockwise in the present invention.
Fig. 4 is the laser Brillouin scattering location drawing that each angle different depth excites in two-dimensional space.
Fig. 5 is two-dimensional space seawater salinity distribution map.
In figure：1. laser instrument, 2. half-wave plate, 3. polarizer, 4. quarter-wave plate, 5. the first level crossing, 6. digital control rotating
Axle, 7. the second level crossing, 8. the first convex lens, 9. slit, 10. the second convex lens, 11.F-P etalon, 12. camera lenses,
13.ICCD, 14. computers.
Specific embodiment
Now the invention will be further described with reference to the accompanying drawings.Referring to Fig. 1, the two dimension based on Brillouin scattering seawater halocline
Scanning probe method, computer 14 connecting laser 1, ICCD 13 and numerical control rotating shaft 6 respectively, camera lens 12 is docked with ICCD 13, swashs
The transmitting terminal of light device 1 is sequentially arranged with half-wave plate 2, the axis of polarizer 3, quarter-wave plate 4 and these three eyeglasses and laser beam
Coaxial, quarter-wave plate 4 other end corresponds to the first level crossing 5, and the first level crossing 5 is embedded in numerical control rotating shaft 6, polarizer 3
Side correspondence equipped with the second level crossing 7, the corresponding side of the second level crossing 7 is arranged in order the first convex lens 8, slit 9, second
Convex lens 10, F-P etalon 11, the axis of camera lens 12, ICCD13 and these devices are coaxial with the optical axis of flashlight.
Its detection steps is as follows：
1) as shown in figure 1, laser instrument 1, ICCD13 being started by computer 14 and controlling numerical control rotating shaft 6 to make to be embedded in above
The first level crossing 5 be in 45° angle with laser beam, now laser beam is vertically injected in seawater；
2) brillouin scattering signal, computer can all be produced in the waters of different depth when laser is vertically propagated in the seawater
14 pass through to record the brillouin scattering signal in different depth waters, can draw out different depth waters Brillouin on vertical direction
The one-dimensional data of scattered signal；
3) computer 14 controls numerical control rotating shaft 6 so that the first level crossing 5 being embedded in above numerical control rotating shaft 6 is rotated counterclockwise,
As Fig. 2, the first level crossing 5 turns to position II by position I, and the first level crossing 5 rotational angle is β, incident light rotational angle α
(0≤α≤45 °), the brillouin scattering signal of different depth seawater in record α angle, and draw out one-dimensional in α angle
Brillouin scattering signal data；
4) computer 14 controls numerical control rotating shaft 6 so that the first level crossing 5 being embedded in above numerical control rotating shaft 6 is restPosed
And rotate clockwise, such as Fig. 3, the first level crossing 5 turns to position II by position I, and the first level crossing 5 rotational angle is β, enters
Penetrate light rotational angle α (0≤α≤45 °), the brillouin scattering signal of different depth seawater draw out α in record α angle
One-dimensional brillouin scattering signal data in angle；
5) this multigroup one-dimensional brillouin scattering signal data is depicted as two-dimentional brillouin scattering signal data by computer 14
And by calculating the seawater salinity variation diagram being depicted as two dimension.
When described computer 14 controls ICCD13 to record the brillouin scattering signal of different depth seawater in α angle,
The signal that every one stage signal of collection is gathered when being moved with zero-turn is in the waters of same depth.
Fig. 2 is the index path of laser on the first level crossing during numerical control rotating shaft rotate counterclockwise of the present invention.Position during original state
Put I the first level crossing and angle γ=45 ° of incident light 100, incident light 100, after the first level crossing reflection of position I, is penetrated
Enter seawater and become emergent light 101, a1、b1、c1、d1Point is the position of different depth signals collecting and their location interval is 5m；
When first level crossing turns to position II, when initial, emergent light 101 rotation α angle becomes emergent light 102, and dotted line 010 is position II
Locate the normal of the first level crossing, ∠ 1 is the angle of incident light 100 and normal 010, a2、b2、c2、d2Point rotates for the first level crossing
To the position of signals collecting during position II and the depth of signals collecting at different levels is at different levels when not rotating at position I with the first level crossing
The depth of signals collecting is identical.
In order to record the first level crossing rotate counterclockwise after β each depth brillouin scattering signal and from different angle of rotation gained
Brillouin scattering signal compare, by ICCD13 record the time be adjusted to T=t+2 Δ t.
t：Light is propagated in a device and is recorded the consumed time；2Δt：When flashlight comes and goes consumed in the seawater
Between.
Known by Fig. 2：
1=90 ° of β+γ+∠；①
1=90 ° of γ-β+α+∠；②
γ=45 °；③
From above-mentioned three formulas：α=2 β.
In formula：Η：Seawater investigation depth；
h：Signal depth difference 5m at different levels；
t0：Light propagates the time being consumed during 5m in the seawater；
α：Emergent light 102 and the angle of vertical direction；
β：First level crossing turns to, by position I, the angle that position II deflects.
Therefore, after the first level crossing rotates β angle by position I to position II inverse time, the Brillouin of record different depth
During scattered signal, computer 14 is controlled the ICCD13 record time to be adjusted to
The index path of laser on first level crossing when Fig. 3 turns clockwise for numerical control rotating shaft of the present invention.Position during original state
Put I the first level crossing and angle γ=45 ° of incident light 100, incident light 100, after the first level crossing reflection of position I, is penetrated
Enter seawater and become emergent light 201, a1、b1、c1、d1Point is the position of different depth signals collecting and their location interval is 5m；
When first level crossing turns to position II, when initial, emergent light 201 rotation α angle becomes emergent light 202, and dotted line 010 is position II
Locate the normal of the first level crossing, ∠ 1 is the angle of incident light 100 and normal 010, a2、b2、c2、d2Point rotates for the first level crossing
To the position of signals collecting during position II and the depth of signals collecting at different levels is at different levels when not rotating at position I with the first level crossing
The depth of signals collecting is identical.
In order to record the first level crossing rotate counterclockwise after β each depth brillouin scattering signal and from different angle of rotation gained
Brillouin scattering signal compare, by ICCD13 record the time be adjusted to T=t+2 Δ t.
In formula：t：Light is propagated in a device and is recorded the consumed time；
2Δt：Flashlight comes and goes the consumed time in the seawater.
Known by Fig. 2：
1=90 ° of β+γ-α+∠；①
1=90 ° of γ-β+∠；②
γ=45 °；③
From above-mentioned three formulas：α=2 β, this is identical with the result of deflection counterclockwise.
In formula：Η：Seawater investigation depth；
h：Signal depth difference 5m at different levels；
t0：Light propagates the time being consumed during 5m in the seawater；
α：Emergent light 102 and the angle of vertical direction；
β：First level crossing turns to, by position I, the angle that position II deflects.
Therefore, after the first level crossing rotates β angle by position I to position II up time, the Brillouin of record different depth
During scattered signal, computer 14 is controlled the ICCD13 record time to be equally adjusted to
Fig. 4 is the laser Brillouin scattering location drawing that each angle different depth excites in two-dimensional space.Incident light 100 warp
Emergent light 101 is become, the solid dot on emergent light 101 is collection Brillouin scattering letter after pip 003 reflection of the first level crossing
Number location point, brillouin scattering signal collection time-controllable beWhen the first level crossing counterclockwise
During 001 rotation, emergent light 101 gradually changes deflection angle α and becomes emergent light 102, emergent light 103, emergent light 104 successively, goes out
Penetrate light 105, emergent light 106, emergent light 107, emergent light 108, emergent light 109, emergent light 110, emergent light 111, emergent light
112nd, emergent light 113, the solid dot in these emergent light light paths is the location point of collection brillouin scattering signal, Brillouin scattering
The time-controllable of signals collecting isWhen 002 rotation in the direction of the clock of the first level crossing, emergent light 201
Gradually change deflection angle α and become emergent light 202, emergent light 203, emergent light 204, emergent light 205, emergent light 206 successively, go out
Penetrate light 207, emergent light 208, emergent light 209, emergent light 210, emergent light 211, emergent light 212, emergent light 213, these outgoing
Solid dot in light light path is the location point of collection brillouin scattering signal, and the time-controllable of brillouin scattering signal collection is
Fig. 5 is two-dimensional space seawater salinity distribution map.Calculated by the brillouin scattering signal of computer 14 analysis collection
Go out corresponding seawater salinity and be marked in two-dimensional space, the solid dot on same dotted line represents in same depth difference angle
Seawater salinity, adjacent dashed interval is 5m, thus draws the seawater salinity distribution map in the depth and range of a two dimensional surface.
The operation principle of the present invention：The laser instrument 1 being controlled by computer 14 projects the vertical polarised light of 532nm by heavy line
Represent light path；Vertically polarised light passes through polarizer 3 with horizontal polarization light transmission and with high transmissivity after half-wave plate 2；Water
Flat polarised light is injected in seawater through quarter-wave plate 4 and after reflecting through the first level crossing 5 with elliptical polarization；Original state
When the first level crossing and incident light angle be in 45 °, laser is vertically injected in seawater；The seawater of different depth all produces Brillouin and dissipates
Penetrate signal, flashlight is pressed original optical path and returned, projected with polarization and vertical polarization when being again passed through quarter-wave plate 4；Vertically polarize
Reflection directive the second level crossing 7 through polarizer 3 for the Brillouin scattering, then by the second level crossing 7 reflection through the first convex lens
The convergence of mirror 8 pass through slit 9, the second lens 10 again flashlight is collimated after by F-P etalon 11 light splitting, flashlight is through camera lens 12
Enter and control the time that ICCD13 gathers brillouin scattering signal to be adjusted in computer 14Computer 14 passes through
The brillouin scattering signal in record different depth waters, can draw out Brillouin scattering letter in different depth waters on vertical direction
Number one-dimensional data；Computer 14 controls numerical control rotating shaft 6, and numerical control rotating shaft rotate counterclockwise is related to inlay superincumbent first plane
Mirror also, after inverse time rotation β angle, records the brillouin scattering signal of different depth, and when computer 14 is controlled ICCD13 record
Between be adjusted toComputer 14 is drawn out the first level crossing 5 and is deflected different depth waters cloth behind β direction counterclockwise
In deep scattered signal one-dimensional data；Computer 14 controls numerical control rotating shaft 6, and numerical control rotating shaft turns clockwise related being embedded in above
The first level crossing after also up time rotates β angle, the brillouin scattering signal of record different depth, and computer 14 is controlled
The ICCD13 record time is adjusted toComputer 14 is drawn out the first level crossing 5 and is deflected clockwise behind β direction not
One-dimensional data with basin's brillouin scattering signal；This multigroup one-dimensional brillouin scattering signal data is drawn by computer 14
Become two-dimentional brillouin scattering signal data and by calculating the seawater salinity variation diagram being depicted as two dimension.
Brillouin scattering is one of nonlinear optics important research direction, and its mechanism of production is incident field and medium
Interior elastic sound waves field interactions and produce.The frequency of scattered light is moved with respect to the frequency of incident light, and this
The size planting movement is relevant with the sound wave field characteristic in angle of scattering and scattering medium.By receiving the backscatter signal in deep-sea
To reach the impact eliminating angle of scattering, the effect of slit 9 eliminates Raman scattering signal and the veiling glare of high frequency.
In sum, the two-dimensional scan probe method based on Brillouin scattering seawater halocline for the present invention can do to deep-sea marine site
Seawater salinity distribution in the depth and range of two dimensional surface detects, and therefore can do seawater to deep-sea marine site according to the inventive method
The two-dimensional scan of halocline detects and meets the detection of surrounding sea halocline residing for underwater submarine.
Claims (2)
1. the two-dimensional scan probe method based on Brillouin scattering seawater halocline it is characterised in that the emergent ray of laser instrument with
The axis co-axial of half-wave plate, polarizer and quarter-wave plate simultaneously passes through half-wave plate, polarizer and quarter-wave plate successively, and four
/ mono- wave plate front end studs with the first level crossing equipped with numerical control rotating shaft, numerical control rotating shaft；It is flat that the side of polarizer is sequentially arranged with second
Face mirror, the first convex lens, slit, the second convex lens, F-P etalon and camera lens, camera lens is docked with ICCD, and the first convex lens,
Slit, the second convex lens, F-P etalon, camera lens and ICCD are in position coaxial；Computer connects and Synchronization Control laser
Device, ICCD and numerical control rotating shaft；
Its step is as follows：
1) pass through computer starting laser instrument, ICCD and control numerical control rotating shaft, make to be embedded in the first plane above numerical control rotating shaft
Mirror and laser beam are in 45° angle, and laser beam is vertically injected in seawater；
2) ICCD records the brillouin scattering signal of different depth seawater, and draws out one-dimensional brillouin scattering signal number
According to；
3) numerical control rotating shaft makes the first level crossing rotate counterclockwise, now the direction also rotate counterclockwise in laser beam directive seawater；
4) ICCD records the brillouin scattering signal of different depth seawater in each angle, and draws out in all angles
One-dimensional brillouin scattering signal data；
5) numerical control rotating shaft makes the first level crossing recover 45 ° of the initial angle with laser beam；
6) numerical control rotating shaft makes the first level crossing turn clockwise, and now the direction in laser beam directive seawater also turns clockwise；
7) repeat step 4)；
8) by step 2), 4) and 7) the one-dimensional brillouin scattering signal data that obtains is depicted as two-dimentional brillouin scattering signal number
According to, and the seawater salinity variation diagram of two dimension is drawn by the frequency shift amount or live width amount calculating brillouin scattering signal.
2. the two-dimensional scan probe method based on Brillouin scattering seawater halocline according to claim 1 it is characterised in that
During the described ICCD brillouin scattering signal that different depth seawater produces on recording all angles, computer controls ICCD record
Time is adjusted to：
In formula：T light is propagated in a device and is recorded the consumed time；
Η seawater investigation depth；
H signal depth at different levels is poor；
t0Light propagates the time being consumed during h in the seawater；
β first level crossing turns to, by position I, the angle that position II deflects.
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| CN104914166B (en) * | 2015-06-03 | 2017-04-05 | 中国科学院声学研究所东海研究站 | The method and apparatus for being detected using passive sonar and recognizing the deep-sea cliff of displacement |
| CN108828553A (en) * | 2018-04-19 | 2018-11-16 | 南昌航空大学 | A kind of system and device of stimulated Brillouin scattering laser radar simulation deep-sea detecting |
| CN109001296A (en) * | 2018-05-18 | 2018-12-14 | 金华逻辑回归信息科技有限公司 | A kind of sea-water salt sonar detection system |
| US11367209B2 (en) * | 2020-10-23 | 2022-06-21 | X Development Llc | Visual detection of haloclines |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4948958A (en) * | 1989-08-01 | 1990-08-14 | Gte Government Systems Corporation | Remote subsurface water temperature measuring apparatus with brillouin scattering |
| US4962319A (en) * | 1989-07-28 | 1990-10-09 | Gte Government Systems Corporation | Remote subsurface water temperature measuring apparatus with Brillouin scattering |
| CN101256242A (en) * | 2008-03-07 | 2008-09-03 | 浙江大学 | Apparatus and method for areflexia object in post-direction stimulated brillouin scattering detecting liquid |
| CN101614820A (en) * | 2009-05-25 | 2009-12-30 | 南昌航空大学 | A kind of signal enhancement laser radar system based on modified F-P etalon |
| CN102243307A (en) * | 2011-04-13 | 2011-11-16 | 南昌航空大学 | Underwater detection automatic scanning system of SBS (Stimulated Brillouin Scattering) laser radar |
| CN102809437A (en) * | 2012-08-31 | 2012-12-05 | 哈尔滨工业大学 | Device for measuring medium brillouin gain linetype and line width and a method for measuring medium brillouin gain linetype and line width based on device |
| CN104063563A (en) * | 2014-07-16 | 2014-09-24 | 国家海洋局第一海洋研究所 | Method for calculating ocean spring layer characteristic values through multi-line-segment least square fitting |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104166130A (en) * | 2014-08-07 | 2014-11-26 | 华中科技大学 | Method for carrying out synchronous inversion to obtain temperature and salinity of sea water according to Brillouin frequency shift and Brillouin line width |
| CN104116130A (en) * | 2014-08-13 | 2014-10-29 | 无锡惠山泵业有限公司 | Tobacco shred drying device used for lab |
-
2015
- 2015-01-15 CN CN201510018713.5A patent/CN104568846B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4962319A (en) * | 1989-07-28 | 1990-10-09 | Gte Government Systems Corporation | Remote subsurface water temperature measuring apparatus with Brillouin scattering |
| US4948958A (en) * | 1989-08-01 | 1990-08-14 | Gte Government Systems Corporation | Remote subsurface water temperature measuring apparatus with brillouin scattering |
| CN101256242A (en) * | 2008-03-07 | 2008-09-03 | 浙江大学 | Apparatus and method for areflexia object in post-direction stimulated brillouin scattering detecting liquid |
| CN101614820A (en) * | 2009-05-25 | 2009-12-30 | 南昌航空大学 | A kind of signal enhancement laser radar system based on modified F-P etalon |
| CN102243307A (en) * | 2011-04-13 | 2011-11-16 | 南昌航空大学 | Underwater detection automatic scanning system of SBS (Stimulated Brillouin Scattering) laser radar |
| CN102809437A (en) * | 2012-08-31 | 2012-12-05 | 哈尔滨工业大学 | Device for measuring medium brillouin gain linetype and line width and a method for measuring medium brillouin gain linetype and line width based on device |
| CN104063563A (en) * | 2014-07-16 | 2014-09-24 | 国家海洋局第一海洋研究所 | Method for calculating ocean spring layer characteristic values through multi-line-segment least square fitting |
Non-Patent Citations (6)
| Title |
|---|
| Experimental analysis on calibration of instrument broadening in a lidar system with Fabry–Perot etalon;Yong Ma et al;《Modern optics》;20140110;第60卷(第21期);全文 * |
| Precise measurement of Brillouin scattering spectrum in the ocean using F–P etalon and ICCD;K.Liang et al;《Applied Physics B》;20110911;第105卷;全文 * |
| 基于受激布里渊散射的水下物体探测;吕月兰;《中国激光》;20060331;第33卷;全文 * |
| 基于布里渊向后散射的海水温度与盐度同步测量研究;马泳等;《光学学报》;20080831;第28卷(第8期);全文 * |
| 基于布里渊散射的海洋温度和盐度的反演;刘杰;《鱼雷技术》;20140831;第22卷(第4期);全文 * |
| 布里渊散射测量盐度及温度不同的海水中的声速;刘大禾等;《中国激光》;20000430;第27卷(第4期);全文 * |
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