CN108226900A - A kind of receiving system and ozone sounding laser radar - Google Patents
A kind of receiving system and ozone sounding laser radar Download PDFInfo
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- CN108226900A CN108226900A CN201810094668.5A CN201810094668A CN108226900A CN 108226900 A CN108226900 A CN 108226900A CN 201810094668 A CN201810094668 A CN 201810094668A CN 108226900 A CN108226900 A CN 108226900A
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000012545 processing Methods 0.000 claims abstract description 96
- 238000001069 Raman spectroscopy Methods 0.000 claims abstract description 65
- 239000000835 fiber Substances 0.000 claims abstract description 60
- 230000003287 optical effect Effects 0.000 claims abstract description 41
- 238000006243 chemical reaction Methods 0.000 claims abstract description 30
- 239000013307 optical fiber Substances 0.000 claims abstract description 29
- 230000005693 optoelectronics Effects 0.000 claims abstract description 16
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- 230000005499 meniscus Effects 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 8
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- 238000013461 design Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229920000965 Duroplast Polymers 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
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- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 208000011580 syndromic disease Diseases 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 206010010071 Coma Diseases 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4816—Constructional features, e.g. arrangements of optical elements of receivers alone
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/95—Lidar systems specially adapted for specific applications for meteorological use
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4818—Constructional features, e.g. arrangements of optical elements using optical fibres
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
This application discloses a kind of receiving system and ozone sounding laser radars, the reception of ozone echo-signal that the receiving system receives multiple split telescopes using the realization of combined beam light fibre, and it is handled to realize conversion of the optical signal to electric signal using the ozone echo-signal that subsequent optical path pairing beam optical fiber transmits, without according to the numerous coupling optical path of the quantitative design for combining the monomer telescope in telescope, photodetector and harvester, realize the cost for the receiving light path for reducing combination telescope, improve the integrated level of receiving light path, and reduce the purpose of debugging difficulty.In addition, first signal processing module and second signal processing module of the receiving system are symmetrical arranged about the central axes of the chopper disk, so as to by carrying out individually adjusting to realize the opto-electronic conversion of Rayleigh echo-signal or Raman echo signal to light path where the first signal processing module and second signal processing module.
Description
Technical field
This application involves laser radar system technical field, more specifically to a kind of receiving system and ozone
Detecting laser radar.
Background technology
In recent decades, laser radar is quickly grown in Atmospheric Survey field, particularly in China, the input of research funding
Increase, the development of Atmospheric Survey laser radar springs up like bamboo shoots after a spring rain.2012, National Natural Science Foundation of China subsidized
The great science ＆ research instrument of country develops special " the more passive synthesis detection systems of Atmospheric components master of multiband ", wherein containing more
A laser radar sub-project, such as particulate cloud laser radar, Rayleigh sodium wind-warm syndrome laser radar, ozone sounding laser radar, pollution
Object detecting laser radar, carbon dioxide laser radar etc..Wherein, Rayleigh sodium wind-warm syndrome laser radar and ozone sounding laser radar remove
It needs to carry out other than tropospheric sounding, it is also necessary to carry out the detection of Middle and upper atmosphere, in order to improve this two Airborne Lidars
It surveys height and signal-to-noise ratio, the capture area for improving receiving telescope is very effective means.
But the processing cost of receiving telescope increases with the geometric index that is added to of receiving area, therefore, now usually
By using more small-bore telescopes as combination telescopes, while receive with the backward of beam of laser and atmospheric interaction
Scatter echo signal, to realize the purpose for the receiving area for increasing receiving telescope.
The design of the receipt of subsequent light path for combining telescope there is no experience that can use for reference in the prior art, traditional pair
The mentality of designing of the receipt of subsequent light path of receiving telescope in ozone sounding laser radar system is usually for single wave
Long echo-signal, a piece independent reception optical fiber of mating setting, a set of coupling optical path, a set of photodetector and a set of acquisition dress
It puts.But for there is the ozone sounding laser radar of combination telescope, if set still according to traditional mentality of designing
The receipt of subsequent light path of meter combination telescope, for the echo-signal of single wavelength, it is necessary to which design is single in telescope with combining
The quantity of body telescope identical reception optical fiber, coupling optical path, photodetector and harvester, then for multiple received waves
Long, at least the quantity of coupling optical path, photodetector and harvester will also be multiplied by the quantity of detection wavelength on the basis of the above,
Not only cost is huge, integrated level is low for the receiving light path of combination telescope being so designed that, but also subsequent implementation debugging is also very tired
It is difficult.
Invention content
In order to solve the above technical problems, this application provides a kind of receiving system and ozone sounding laser radar, with
It realizes the cost for the receiving light path for reducing combination telescope, improve the integrated level of receiving light path, and reduce the mesh of debugging difficulty
's.
To realize the above-mentioned technical purpose, the embodiment of the present application provides following technical solution：
A kind of receiving system, applied to ozone sounding laser radar, the receiving system includes：Combination is looked in the distance
Mirror, combined beam light fibre, colour killing difference module, the first signal processing module, second signal processing module, the first signal conversion module,
Binary signal modular converter and chopper disk；Wherein,
The combination telescope includes multiple split telescopes, is returned for receiving the ozone of the ozone sounding laser radar
Wave signal is simultaneously transmitted to the combined beam light fibre；
The combined beam light fibre includes multifiber, and one end of the every optical fiber is set to split telescope
Focal plane, the combined beam light fibre are used to receive the ozone echo-signal of the combination telescope transmission, and to the achromatism
Module transfer；
The colour killing difference module is used to carry out achromatism, collimation to the ozone echo-signal that the combined beam light fibre transmits and divide
Color processing, to obtain the Rayleigh echo-signal transmitted respectively to the first signal processing module and second signal processing module and Raman
Echo-signal；
First signal processing module and second signal processing module are symmetrical arranged about the central axes of the chopper disk,
First signal processing module for the Rayleigh echo-signal is filtered and convergence processing after, obtain Reyleith scanttering light spot
It is emitted to the chopper disk；
The second signal processing module for the Raman echo signal is filtered and convergence processing after, drawn
Graceful hot spot point is emitted to the chopper disk；
The chopper disk obtains Rayleigh for being carried out after cutting processing to the Reyleith scanttering light spot and Raman light spot respectively
Signal and Raman signal to be converted to be converted；
First signal conversion module is used to receive Rayleigh signal to be converted, and to Rayleigh signal to be converted
After carrying out opto-electronic conversion, Rayleigh electric signal is obtained；
The second signal modular converter is used to receive Raman signal to be converted, and to Raman signal to be converted
After carrying out opto-electronic conversion, Raman electric signal is obtained.
Optionally, the every optical fiber includes：First fibre-optical splice, the second fibre-optical splice and connection first optical fiber connect
The Transmission Fibers of head and the second fibre-optical splice；Wherein,
First fibre-optical splice is set to the focal plane of a split telescope, second fibre-optical splice with
Second fibre-optical splice of other optical fiber of the combined beam light fibre is packaged together, the conjunction beam connector as combined beam light fibre.
Optionally, first fibre-optical splice includes fiber cores and surrounds the first encapsulating structure of the fiber cores；
The beam connector that closes includes multiple second fibre-optical splices and surrounds the second encapsulation of multiple second fibre-optical splices
Structure；
First encapsulating structure is Metal Packaging structure or plastic capsulation structure；
Second encapsulating structure is Metal Packaging structure or plastic capsulation structure.
Optionally, the colour killing difference module includes：Air-gap achromatic lens group, color separation film and the first speculum, wherein,
The air-gap achromatic lens group includes meniscus lens and is set to meniscus lens away from the combined beam light fibre one
The biconvex lens of side, the ozone echo-signal that the air-gap achromatic lens group is used to transmit the combined beam light fibre disappear
Aberration and collimation processing；
The color separation film passes through achromatism and the Raman echo signal in the ozone echo-signal of collimation processing for reflecting,
And the Rayleigh echo-signal in the ozone echo-signal of achromatism and collimation processing is transmitted through, achromatism and collimation will be passed through
The ozone echo-signal of processing is separated into Rayleigh echo-signal and Raman echo signal；
First speculum is used to reflect the Rayleigh echo-signal to first signal processing module.
Optionally, the surface of the meniscus lens and biconvex lens is both provided with ultraviolet light anti-reflection film.
Optionally, first signal processing module includes：Second speculum, the first optical filter and the first plus lens；
Second speculum is used to reflect the Rayleigh echo-signal to first optical filter；
First optical filter is used to filter the spurious signal in the Rayleigh echo-signal, and saturating to the described first convergence
Mirror transmits；
First plus lens is for the Rayleigh echo-signal received to be converged, to obtain Reyleith scanttering light spot simultaneously
It is emitted to the chopper disk；
The second signal processing module includes：Third speculum, the second optical filter and the second plus lens；
The third speculum is used to reflect the Raman echo signal to second optical filter；
Second optical filter is used to filter the spurious signal in the Raman echo signal, and saturating to the described second convergence
Mirror transmits；
Second plus lens is for the Raman echo signal received to be converged, to obtain Raman light spot simultaneously
It is emitted to the chopper disk.
Optionally, the third speculum, the second optical filter and the second plus lens are set in the first cylinder；
The color separation film is connect by first cylinder in a manner of cylinder with the second signal processing module；
Second speculum, the first optical filter and the first plus lens are set in the second cylinder；
First speculum is connect by second cylinder in a manner of cylinder with first signal processing module.
Optionally, first signal conversion module includes：First lens group and the first detector；
First lens group is used to converge Rayleigh signal to be converted；
First detector is used to carry out opto-electronic conversion to the Rayleigh signal to be converted after convergence, to obtain Rayleigh telecommunications
Number；
The second signal modular converter includes：Second lens group and the second detector；
Second lens group is used to converge Raman signal to be converted；
Second detector is used to carry out opto-electronic conversion to the Raman signal to be converted after convergence, to obtain Raman telecommunications
Number.
A kind of ozone sounding laser radar, including：Such as receiving system described in any one of the above embodiments.
It can be seen from the above technical proposal that the embodiment of the present application provides a kind of receiving system and ozone sounding swashs
Optical radar, wherein, the receiving system uses the combined beam light fibre for including multifiber to receive in combination telescope multiple points
The ozone echo-signal that body telescope receives, the ozone echo-signal that combined beam light fibre receives shape after the processing of colour killing difference module
Into Rayleigh echo-signal and Raman echo signal respectively by the first signal processing module, second signal processing module, chopper disk,
After the processing of first signal conversion module and second signal modular converter, Rayleigh electric signal and Raman electric signal, realization pair are obtained
Combine the reception and processing for the ozone echo-signal that telescope receives.The receiving system is realized using combined beam light fibre to more
The reception for the ozone echo-signal that a split telescope receives, and believed using the ozone echo of subsequent optical path pairing beam optical fiber transmission
It number is handled to realize conversion of the optical signal to electric signal, the quantity without the monomer telescope in combination telescope is set
Numerous coupling optical paths, photodetector and harvester are counted, the cost for the receiving light path for reducing combination telescope is realized, carries
The integrated level of high receiving light path, and reduce the purpose of debugging difficulty.
In addition, first signal processing module and second signal processing module of the receiving system are about described
The central axes of chopper disk are symmetrical arranged, so as to by light where the first signal processing module and second signal processing module
Road carries out individually adjusting to realize the opto-electronic conversion of Rayleigh echo-signal or Raman echo signal.
Description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or it will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of application, for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the structure diagram of a kind of receiving system that one embodiment of the application provides；
Fig. 2 is the structure diagram of a kind of combined beam light fibre that one embodiment of the application provides；
Fig. 3 is cross-sectional view of first fibre-optical splice along AA ' lines in Fig. 2；
Fig. 4 is that cross-sectional view of the beam connector along BB ' lines is closed in Fig. 2；
Fig. 5 is that a kind of combined beam light fibre that one embodiment of the application provides shows with combining the installation position relationship of telescope
It is intended to；
Fig. 6 is the specific connection diagram of a kind of receiving system that one embodiment of the application provides.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, the technical solution in the embodiment of the present application is carried out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall in the protection scope of this application.
The embodiment of the present application provides a kind of receiving system, as shown in Figure 1, applied to ozone sounding laser radar,
The receiving system includes：Combine telescope 10, combined beam light fibre 80, colour killing difference module 20, the first signal processing module 30,
Second signal processing module 50, the first signal conversion module 40, second signal modular converter 60 and chopper disk 70；Wherein,
The combination telescope 10 includes multiple split telescopes, for receiving the ozone of the ozone sounding laser radar
Echo-signal is simultaneously transmitted to combined beam light fibre 80；
The combined beam light fibre 80 includes multifiber, and one end of the every optical fiber is set to a split telescope
Focal plane, combined beam light fibre 80 is for receiving the ozone echo-signal that the combination telescope 10 transmits, and to described
Colour killing difference module 20 transmits；
The colour killing difference module 20 is used to carry out achromatism, collimation to the ozone echo-signal of 80 transmission of combined beam light fibre
And color separation processing, believed with obtaining the Rayleigh echo transmitted respectively to the first signal processing module 30 and second signal processing module 50
Number and Raman echo signal；
The central axes pair of first signal processing module 30 and second signal processing module 50 about the chopper disk 70
Claim setting, first signal processing module 30 for the Rayleigh echo-signal is filtered and convergence processing after, obtain
Reyleith scanttering light spot is emitted to the chopper disk 70；
The second signal processing module 50 for the Raman echo signal is filtered and convergence processing after, obtain
Raman light spot is emitted to the chopper disk 70；
The chopper disk 70 obtains auspicious for being carried out after cutting processing to the Reyleith scanttering light spot and Raman light spot respectively
Profit signal to be converted and Raman signal to be converted；
First signal conversion module 40 is used to receive Rayleigh signal to be converted, and to Rayleigh letter to be converted
Number carry out opto-electronic conversion after, obtain Rayleigh electric signal；
The second signal modular converter 60 is used to receive Raman signal to be converted, and to Raman letter to be converted
Number carry out opto-electronic conversion after, obtain Raman electric signal.
In actual use, it is smelly when using optical fiber in monomer telescope focal plane reception ozone echo-signal
The field of view of receiver angle of oxygen detecting laser radar is approximately the fiber core diameter d of the light divided by focal length f of monomer telescope, and ozone is visited
The field of view of receiver angle for surveying laser radar is greater than the angle of divergence of transmitting light beam, it is contemplated that the field of view of receiver of ozone sounding laser radar
Angle requires, and determines the fiber core diameter of optical fiber, while the numerical aperture of optical fiber needs to be more than monomer according to the numerical aperture of optical fiber
The principle of the numerical aperture of telescope in itself determines.
In the present embodiment, the receiving system uses the combined beam light fibre 80 for including multifiber to receive combination and looks in the distance
The ozone echo-signal that multiple split telescopes receive in mirror 10, the ozone echo-signal that combined beam light fibre 80 receives pass through achromatism
Rayleigh echo-signal and Raman echo signal is formed after the processing of module 20 respectively by the first signal processing module 30, second to believe
Number processing module 50, chopper disk 70, the first signal conversion module 40 and second signal modular converter 60 processing after, obtain Rayleigh
Electric signal and Raman electric signal realize the reception and processing of ozone echo-signal received to combination telescope 10.The signal
Reception system realizes the reception of ozone echo-signal received to multiple split telescopes using combined beam light fibre 80, and using subsequently
The ozone echo-signal that light path pairing beam optical fiber 80 transmits is handled to realize conversion of the optical signal to electric signal, without basis
The quantitative design of the monomer telescope in telescope 10 numerous coupling optical path, photodetector and harvester are combined, is realized
It reduces the cost of the receiving light path of combination telescope 10, improve the integrated level of receiving light path, and reduce the mesh of debugging difficulty
's.
In addition, the receiving system first signal processing module 30 and second signal processing module 50 about
The central axes of the chopper disk 70 are symmetrical arranged, so as to by handling mould to the first signal processing module 30 and second signal
50 place light path of block carries out individually adjusting to realize the opto-electronic conversion of Rayleigh echo-signal or Raman echo signal.
On the basis of above-described embodiment, in one embodiment of the application, with reference to figure 2, the every optical fiber includes：
The Transmission Fibers of first fibre-optical splice 81, the second fibre-optical splice and connection 81 and second fibre-optical splice of the first fibre-optical splice
82；Wherein,
First fibre-optical splice 81 is set to the focal plane of a split telescope, second fibre-optical splice
It is packaged together with the second fibre-optical splice of other optical fiber of the combined beam light fibre 80, the conjunction beam as the combined beam light fibre 80 connects
First 83.
As shown in figure 3, Fig. 3 is cross-sectional view of first fibre-optical splice 81 along AA ', first fibre-optical splice 81
The first encapsulating structure 812 including fiber cores 811 and the encirclement fiber cores 811；
As shown in figure 4, Fig. 4 is cross-sectional view of the middle conjunction beam connector 83 along BB ', the conjunction beam connector 83 includes more
A second fibre-optical splice 831 and the second encapsulating structure 832 for surrounding multiple second fibre-optical splices 831；
First encapsulating structure 812 is Metal Packaging structure or plastic capsulation structure；
Second encapsulating structure 832 is Metal Packaging structure or plastic capsulation structure.
The pattern of first fibre-optical splice, 81 and second fibre-optical splice needs the optical fiber interface according to combination telescope 10
It determines, such as can be common fibre-optical splice SMA or FC, given joint can also be customized according to actual needs.
In ozone sounding laser radar, in order to enable reception optical fiber reduces coma pair as possible close proximity to focus center
The influence of receiving efficiency, we preferably take surrounds the structure of one layer of first encapsulating structure as described first around fiber cores
Fibre-optical splice 81.In use, we set protection light screening material usually around fiber cores, for protecting fiber cores,
Prevent influence of the stray light to laser radar ambient noise simultaneously.
The cross-section structure of beam connector 83 is closed with reference to figure 4, in fig. 4 it is shown that include the combined beam light fibre 80 of four optical fiber, because
This, closes beam connector by 4 the second fibre-optical splices 831 and surrounds 832 structures of the second encapsulating structure of these the second fibre-optical splices 831
Into second encapsulating structure 832 is preferably using the duroplasts and encirclement duroplasts for including these the second fibre-optical splices 831 of encirclement
Metal shell form, for protect optical fiber and installation optical fiber to subsequent optical path in.Of course, second encapsulating structure 832
Can also be that individual Metal Packaging structure or plastic capsulation structure, the application do not limit this, specifically regarding actual conditions
Depending on.
The first fibre-optical splice 81 is shown in Fig. 5 with combining the setting relationship of telescope 10, in Figure 5, the combination is hoped
Remote mirror 10 is made of 4 monomer telescopes 11, and the dotted line of label Light represents the light received by monomer telescope, correspondingly,
4 the first fibre-optical splices 81 are just contained in the combined beam light fibre 80 and 4 the second fibre-optical splices 831, each first optical fiber connect
First 81 are installed on the focal plane of a monomer telescope 11, and the conjunction beam connector 83 of combined beam light fibre 80 is connected to the colour killing differential mode
The input terminal of block 20.
On the basis of above-described embodiment, in another embodiment of the application, referring still to Fig. 1, the achromatism
Module 20 includes：Air-gap achromatic lens group 21,22 and first speculum 23 of color separation film, wherein,
The air-gap achromatic lens group 21 includes meniscus lens and is set to meniscus lens away from combined beam light fibre
The biconvex lens of 80 sides, the air-gap achromatic lens group 21 are used to believe the ozone echo of 80 transmission of combined beam light fibre
Number carry out achromatism and collimation processing；
The color separation film 22 passes through achromatism and the Raman echo letter in the ozone echo-signal of collimation processing for reflecting
Number, and be transmitted through achromatism and collimation processing ozone echo-signal in Rayleigh echo-signal, will pass through achromatism and
The ozone echo-signal of collimation processing is separated into Rayleigh echo-signal and Raman echo signal；
First speculum 23 is used to reflect the Rayleigh echo-signal to first signal processing module 30.
In view of containing Rayleigh signal and Raman signal, two kinds of signals simultaneously in the echo-signal of 802 transmission of combined beam light fibre
Wavelength is different, differs nm more than 20, and when being collimated using one piece of lens, there are apparent aberration, need to take achromatism measure,
And two kinds of signals are all ultraviolet lights, commercially available gluing achromatic lens contributes to visible ray and infrared band, can not meet ultraviolet
Band operation requirement, since glueing material is to the absorption of ultraviolet light, needs the achromatic lens group of design air gap to optical fiber
The echo-signal of outgoing is collimated, and since combined beam light fibre 80 is multimode fibre, and whole core diameter is larger, the light after fiber exit
Pattern is more, it is preferable that the material of the meniscus lens and biconvex lens is different (such as can be calcirm-fluoride material respectively and melt
Quartz material) aberration caused by different wave length refractive index difference is influenced to reduce lens thickness, every lens surface curvature root
It is optimized according to optical fiber core diameter sum number value aperture after closing beam, light beam obtains best collimation after optimization process mainly considers collimation
With minimum wavefront difference, ensure the beam angle after collimation in the receiving angle of optical filter, penetrated with obtaining best optical filter
Rate.
Preferably, the surface of the meniscus lens and biconvex lens is both provided with ultraviolet light anti-reflection film, to increase transmissivity.
And it considers in ozone echo-signal, Raman echo signal nearly three orders of magnitude weaker than Rayleigh echo-signal,
And high reflectance plated film difficulty is smaller during plating dichroic coating, in the present embodiment, the color separation film is designed as reflection by achromatism
Raman echo signal in the ozone echo-signal handled with collimation, and it is transmitted through achromatism and the ozone echo of collimation processing
Rayleigh echo-signal in signal.
On the basis of above-described embodiment, in another embodiment of the application, referring still to Fig. 1, first letter
Number processing module 30 includes：Second speculum 31, the first optical filter 32 and the first plus lens 33；
Second speculum 31 is used to reflect the Rayleigh echo-signal to first optical filter；
First optical filter 32 is used to filter the spurious signal in the Rayleigh echo-signal, and converge to described first
Lens transmission；
First plus lens 33 is for the Rayleigh echo-signal received to be converged, to obtain Reyleith scanttering light spot
And it is emitted to the chopper disk 70；
The second signal processing module 50 includes：Third speculum 51, the second optical filter 52 and the second plus lens 53；
The third speculum 51 is used to reflect the Raman echo signal to second optical filter；
Second optical filter 52 is used to filter the spurious signal in the Raman echo signal, and converge to described second
Lens transmission；
Second plus lens 53 is for the Raman echo signal received to be converged, to obtain Raman light spot
And it is emitted to the chopper disk 70.
With reference to figure 1, in practical applications, the setting of the first speculum 22, the second speculum 31 and third speculum 51
Purpose is to meet light path and the layout requirements of light path,
On the basis of above-described embodiment, in the specific embodiment of the application, as shown in fig. 6, the third is anti-
Mirror 51, the second optical filter 52 and the second plus lens 53 is penetrated to be set in the first cylinder；
The color separation film 22 is connect by first cylinder in a manner of cylinder with the second signal processing module 50；
Second speculum 31, the first optical filter 32 and the first plus lens 33 are set in the second cylinder；
First speculum 23 is connect by second cylinder in a manner of cylinder with first signal processing module
30。
First cylinder and the second cylinder can surround the central axes AW of the colour killing difference module, perpendicular to paper
Plane internal rotation, due to color separation film 22 by first cylinder by justify it is logical in a manner of connect with the second signal processing module 50
It connects, and first speculum 23 is connect by second cylinder in a manner of cylinder with first signal processing module 30,
It can ensure the first cylinder and the second cylinder during rotation, the light path of whole system does not change.First cylinder and
The independent rotation of second cylinder can to transmit the light path of Raman echo signal and transmit the light path convergence of Rayleigh echo-signal
Position to 70 glazing spot of chopper disk is different, so that the time that chopper disk 70 cuts hot spot is different, that is to say, that hot spot
Point is different by the time of notch on chopper disk 70, and when hot spot point determines laser thunder by the notch of chopper disk 70
Up to the opening height of echo-signal.When echo-signal is completely by 70 notch of chopper disk, corresponding echo-signal is opened completely.Cause
This, the independent spinfunction of the first cylinder and the second cylinder can independently adjust the opening height of two-way echo-signal, can obtain
The different opening height of the Raman echo signal of ozone laser radar Rayleigh echo-signal.
On the basis of above-described embodiment, in another embodiment of the application, referring still to Fig. 1, first letter
Number modular converter 40 includes：First lens group 41 and the first detector 42；
First lens group 41 is used to converge Rayleigh signal to be converted；
First detector 42 is used to carry out opto-electronic conversion to the Rayleigh signal to be converted after convergence, to obtain Rayleigh electricity
Signal；
The second signal modular converter 60 includes：Second lens group 61 and the second detector 62；
Second lens group 61 is used to converge Raman signal to be converted；
Second detector 62 is used to carry out opto-electronic conversion to the Raman signal to be converted after convergence, to obtain Raman electricity
Signal.
Correspondingly, the embodiment of the present application additionally provides a kind of ozone sounding laser radar, including such as above-mentioned any embodiment
The receiving system.
In conclusion the embodiment of the present application provides a kind of receiving system and ozone sounding laser radar, wherein, institute
Stating receiving system uses the combined beam light fibre for including multifiber to receive what multiple split telescopes in combination telescope received
Ozone echo-signal, the ozone echo-signal that combined beam light fibre receives form Rayleigh echo-signal after the processing of colour killing difference module
With Raman echo signal respectively by the first signal processing module, second signal processing module, chopper disk, the first signal modulus of conversion
After the processing of block and second signal modular converter, Rayleigh electric signal and Raman electric signal are obtained, realizes and combination telescope is received
Ozone echo-signal reception and processing.The receiving system connects multiple split telescopes using the realization of combined beam light fibre
The reception of the ozone echo-signal of receipts, and handled using the ozone echo-signal that subsequent optical path pairing beam optical fiber transmits with reality
Existing conversion of the optical signal to electric signal, without according to the numerous coupling light of the quantitative design for combining the monomer telescope in telescope
Road, photodetector and harvester realize the cost for the receiving light path for reducing combination telescope, improve the collection of receiving light path
Cheng Du, and reduce the purpose of debugging difficulty.
In addition, first signal processing module and second signal processing module of the receiving system are about described
The central axes of chopper disk are symmetrical arranged, so as to by light where the first signal processing module and second signal processing module
Road carries out individually adjusting to realize the opto-electronic conversion of Rayleigh echo-signal or Raman echo signal.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or using the application.
A variety of modifications of these embodiments will be apparent for those skilled in the art, it is as defined herein
General Principle can in other embodiments be realized in the case where not departing from spirit herein or range.Therefore, the application
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide range caused.
Claims (9)
1. a kind of receiving system, which is characterized in that applied to ozone sounding laser radar, the receiving system packet
It includes：Combine telescope, combined beam light fibre, colour killing difference module, the first signal processing module, second signal processing module, the first signal
Modular converter, second signal modular converter and chopper disk；Wherein,
The combination telescope includes multiple split telescopes, for receiving the ozone echo of ozone sounding laser radar letter
Number and to the combined beam light fibre transmit；
The combined beam light fibre includes multifiber, and the coke that one end of the every optical fiber is set to a split telescope is put down
At face, the combined beam light fibre is used to receive the ozone echo-signal of the combination telescope transmission, and to the colour killing difference module
Transmission；
The colour killing difference module is used to carry out at achromatism, collimation and color separation the ozone echo-signal that the combined beam light fibre transmits
Reason, to obtain the Rayleigh echo-signal transmitted respectively to the first signal processing module and second signal processing module and Raman echo
Signal；
First signal processing module and second signal processing module are symmetrical arranged about the central axes of the chopper disk, described
First signal processing module for the Rayleigh echo-signal is filtered and convergence processing after, obtain Reyleith scanttering light spot to institute
State chopper disk outgoing；
The second signal processing module for the Raman echo signal is filtered and convergence processing after, obtain Raman light
Spot is emitted to the chopper disk；
The chopper disk obtains Rayleigh and waits to turn for being carried out after cutting processing to the Reyleith scanttering light spot and Raman light spot respectively
Change signal and Raman signal to be converted；
First signal conversion module carries out Rayleigh signal to be converted for receiving Rayleigh signal to be converted
After opto-electronic conversion, Rayleigh electric signal is obtained；
The second signal modular converter carries out Raman signal to be converted for receiving Raman signal to be converted
After opto-electronic conversion, Raman electric signal is obtained.
2. receiving system according to claim 1, which is characterized in that the every optical fiber includes：First optical fiber connects
Head, the second fibre-optical splice and the Transmission Fibers of connection first fibre-optical splice and the second fibre-optical splice；Wherein,
First fibre-optical splice is set to the focal plane of a split telescope, second fibre-optical splice with it is described
Second fibre-optical splice of other optical fiber of combined beam light fibre is packaged together, the conjunction beam connector as combined beam light fibre.
3. receiving system according to claim 2, which is characterized in that first fibre-optical splice include fiber cores and
Surround the first encapsulating structure of the fiber cores；
The beam connector that closes includes multiple second fibre-optical splices and surrounds the second encapsulating structure of multiple second fibre-optical splices；
First encapsulating structure is Metal Packaging structure or plastic capsulation structure；
Second encapsulating structure is Metal Packaging structure or plastic capsulation structure.
4. receiving system according to claim 1, which is characterized in that the colour killing difference module includes：Air-gap disappears
Aberration lens group, color separation film and the first speculum, wherein,
The air-gap achromatic lens group includes meniscus lens and is set to meniscus lens away from the combined beam light fibre side
Biconvex lens, the air-gap achromatic lens group are used to carry out achromatism to the ozone echo-signal that the combined beam light fibre transmits
With collimation processing；
The color separation film passes through achromatism and the Raman echo signal in the ozone echo-signal of collimation processing for reflecting, and thoroughly
It penetrates by the Rayleigh echo-signal in achromatism and the ozone echo-signal of collimation processing, achromatism and collimation processing will be passed through
Ozone echo-signal be separated into Rayleigh echo-signal and Raman echo signal；
First speculum is used to reflect the Rayleigh echo-signal to first signal processing module.
5. receiving system according to claim 4, which is characterized in that the surface of the meniscus lens and biconvex lens
It is both provided with ultraviolet light anti-reflection film.
6. receiving system according to claim 4, which is characterized in that first signal processing module includes：The
Two-mirror, the first optical filter and the first plus lens；
Second speculum is used to reflect the Rayleigh echo-signal to first optical filter；
First optical filter is used to filter the spurious signal in the Rayleigh echo-signal, and pass to first plus lens
It is defeated；
First plus lens is for the Rayleigh echo-signal received to be converged, to obtain Reyleith scanttering light spot and to institute
State chopper disk outgoing；
The second signal processing module includes：Third speculum, the second optical filter and the second plus lens；
The third speculum is used to reflect the Raman echo signal to second optical filter；
Second optical filter is used to filter the spurious signal in the Raman echo signal, and pass to second plus lens
It is defeated；
Second plus lens is for the Raman echo signal received to be converged, to obtain Raman light spot and to institute
State chopper disk outgoing.
7. receiving system according to claim 6, which is characterized in that the third speculum, the second optical filter and
Second plus lens is set in the first cylinder；
The color separation film is connect by first cylinder in a manner of cylinder with the second signal processing module；
Second speculum, the first optical filter and the first plus lens are set in the second cylinder；
First speculum is connect by second cylinder in a manner of cylinder with first signal processing module.
8. receiving system according to claim 1, which is characterized in that first signal conversion module includes：The
One lens group and the first detector；
First lens group is used to converge Rayleigh signal to be converted；
First detector is used to carry out opto-electronic conversion to the Rayleigh signal to be converted after convergence, to obtain Rayleigh electric signal；
The second signal modular converter includes：Second lens group and the second detector；
Second lens group is used to converge Raman signal to be converted；
Second detector is used to carry out opto-electronic conversion to the Raman signal to be converted after convergence, to obtain Raman electric signal.
9. a kind of ozone sounding laser radar, which is characterized in that including：As claim 1-8 any one of them signal receives
System.
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| CN201810094668.5A CN108226900B (en) | 2018-01-31 | 2018-01-31 | Signal receiving system and ozone detection laser radar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112433222A (en) * | 2020-11-24 | 2021-03-02 | 长春理工大学 | Haze-penetrating laser distance measuring system and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050008124A (en) * | 2003-07-14 | 2005-01-21 | 광주과학기술원 | Laser Optical Transmitter, Receiver and LIDAR System for Simultaneously Observation of Atmospheric Ozone and Nonspherical Dust |
| CN101692126A (en) * | 2009-09-30 | 2010-04-07 | 中国科学院安徽光学精密机械研究所 | Method and device for emitting and receiving symmetrically-distributed light beams of laser radar |
| CN207817199U (en) * | 2018-01-31 | 2018-09-04 | 中国科学技术大学 | A kind of receiving system and ozone sounding laser radar |
-
2018
- 2018-01-31 CN CN201810094668.5A patent/CN108226900B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050008124A (en) * | 2003-07-14 | 2005-01-21 | 광주과학기술원 | Laser Optical Transmitter, Receiver and LIDAR System for Simultaneously Observation of Atmospheric Ozone and Nonspherical Dust |
| CN101692126A (en) * | 2009-09-30 | 2010-04-07 | 中国科学院安徽光学精密机械研究所 | Method and device for emitting and receiving symmetrically-distributed light beams of laser radar |
| CN207817199U (en) * | 2018-01-31 | 2018-09-04 | 中国科学技术大学 | A kind of receiving system and ozone sounding laser radar |
Non-Patent Citations (1)
| Title |
|---|
| 曹开法;黄见;胡顺星;: "边界层臭氧差分吸收激光雷达", 红外与激光工程, no. 10 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112433222A (en) * | 2020-11-24 | 2021-03-02 | 长春理工大学 | Haze-penetrating laser distance measuring system and method |
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