CN1987520A - Raman scattering laser radar system for meterological and atmospheric environment observation - Google Patents

Raman scattering laser radar system for meterological and atmospheric environment observation Download PDF

Info

Publication number
CN1987520A
CN1987520A CNA2006101051932A CN200610105193A CN1987520A CN 1987520 A CN1987520 A CN 1987520A CN A2006101051932 A CNA2006101051932 A CN A2006101051932A CN 200610105193 A CN200610105193 A CN 200610105193A CN 1987520 A CN1987520 A CN 1987520A
Authority
CN
China
Prior art keywords
signal
light
pmt
laser radar
raman
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA2006101051932A
Other languages
Chinese (zh)
Other versions
CN100543495C (en
Inventor
华灯鑫
刘君
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian University of Technology
Original Assignee
Xian University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xian University of Technology filed Critical Xian University of Technology
Priority to CNB2006101051932A priority Critical patent/CN100543495C/en
Publication of CN1987520A publication Critical patent/CN1987520A/en
Application granted granted Critical
Publication of CN100543495C publication Critical patent/CN100543495C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Abstract

The laser radar system includes transmission system, receiving system, spectrum and photoelectric detection system, and data process system. After collimation, light sent from the pulse laser is sent to atmosphere vertically. The receiving system of the laser radar receives backscattering light generated after interaction between laser and molecules, particles in atmosphere. The received atmosphere echo signal of the laser radar is sent to spectrum system to carry out spectrum. Detected by the photoelectric detection system the spectrum is sent to the data process system to carry out analysis and process. Based on preloaded program, the invention obtains temperature value of atmosphere, density of vapor, optical character parameters of atmospheric aerosol, and depolarization ratio of backscattering light of not spheroidal particle.

Description

Meteorology and atmospheric environment observation Raman scattering laser radar system
Technical field
The invention belongs to meteorological and environmental monitoring technology field, relate to a kind of remote sensing instrument meteorological and environmental monitoring that is used for, be specifically related to a kind of Raman scattering laser radar system meteorological and environmental observation that is used for.
Background technology
In the Study of Atmospheric Environment field, atmospheric temperature, water-vapour density and Atmospheric components etc. are the important parameters that carries out atmospheric research, such as atmospheric temperature, water-vapour density or relative humidity, and the depolarization ratio of atmospheric aerosol extinction coefficient and scattering coefficient, aerosol optical depth and atmospheric visibility, nonspherical particle rear orientation light etc.Existing obtaining in the remote sensing instrument of above-mentioned parameter, the most effectively laser radar has been widely used in research fields such as Laser Atmospheric Transmission, global climate prediction, gasoloid radiation effect and atmospheric environment.
Because the laser radar of observation atmospheric environment uses is Mie scattering signal in the atmosphere echoed signal, and be used for meteorological observation the laser radar utilization be Rayleigh scattering or Raman scattering signal, so common meteorological observation laser radar and atmospheric environment observation laser radar all are to use separately independently system, can not realize that a cover system carries out the observation of meteorologic parameter and atmospheric environment simultaneously.
Summary of the invention
The purpose of this invention is to provide a kind of meteorology and atmospheric environment observation Raman scattering laser radar system, utilize this system can realize meteorologic parameters measurements such as atmospheric temperature, water-vapour density (relative humidity) vertical distribution, and the measurement of the atmospheric environmental parameters such as vertical distribution of the depolarization ratio of atmospheric aerosol extinction coefficient and backscattering coefficient, aerosol optical depth, atmospheric visibility and nonspherical particle rear orientation light, and realized that a cover system carries out the observation of meteorologic parameter and atmospheric environment simultaneously.
The technical solution adopted in the present invention is that meteorological and atmospheric environment observation Raman scattering laser radar system comprises:
An emission coefficient is used for sending pulse laser to atmosphere;
A receiving system is used for receiving the atmosphere echoed signal that produces behind the molecule of above-mentioned laser and atmosphere and the particle interaction, and this echoed signal is sent into
Beam split and photodetector system comprise
Optical splitter is used for the rotary Raman spectral line with this echoed signal, the vibrating Raman spectral line of vapour molecule separate with sun bias light with rice-Rayleigh scattering spectral line and
Photoelectric detector is used for that the various scattered light signals after the above-mentioned separation are become electric signal and receives and send into
A data disposal system, be used to receive above-mentioned electrical signal converted, carry out analyzing and processing, based on the program of finding the solution laser radar equation, try to achieve the depolarization ratio of Temperature numerical, water-vapour density, atmospheric aerosol optical property parameter and the nonspherical particle rear orientation light of atmosphere according to preloaded respectively.
Laser radar system of the present invention has not only been realized meteorologic parameters measurements such as atmospheric temperature, water-vapour density (relative humidity) vertical distribution, and the measurement of the atmospheric environmental parameters such as vertical distribution of the depolarization ratio of atmospheric aerosol extinction coefficient and scattering coefficient, aerosol optical depth, atmospheric visibility and nonspherical particle rear orientation light, and realized that a cover system carries out the function of meteorologic parameter and atmospheric environment observation simultaneously.
Description of drawings
Fig. 1 is a laser radar system structure principle chart of the present invention;
Fig. 2 is the principle of compositionality figure of beam split of the present invention and Photodetection system;
Fig. 3 is two the optical filter centre wavelength being determined in the beam splitting system of the present invention and the curve map of rotational raman spectrum relation;
Fig. 4 is definite synoptic diagram of edge reflections mirror position in the beam splitting system of the present invention;
Fig. 5 is the intensity distribution of atmosphere echoed signal behind optical splitter optical filtering and edge reflections mirror;
Fig. 6 is attainable daytime and the measurement signal to noise ratio (S/N ratio) at night and the height profile figure of thermometric error on the Systems Theory of the present invention.
Among the figure, 1. emission coefficient, 2. receiving system, 3. beam split and photodetector system, 4. beam expander, 5. data handling system, 6.Nd:YAG laser instrument.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
The basis of laser remote sensing is the various physical processes that interact and produced between atom, molecule and the particulate in optical radiation and the atmosphere.In the various scattering mechanisms, Mie scattering (Mie scattering) is that a kind of centre wavelength of scattering spectra is identical with laser wavelength of incidence, the spectrum width of scattering spectra is similar to the elastic scattering of incident laser spectrum width, and it is by particle diameter quite or the scattering that causes greater than the particulate of optical maser wavelength; Rayleigh scattering (Rayleigh scattering) also is that a kind of centre wavelength is identical with laser wavelength of incidence, the elastic scattering that the interdependent atmospheric temperature of spectrum width changes, it is the scattering phenomenon that is caused by little molecule of scatterer particle diameter ratio optical maser wavelength or atom, is mainly used in atmospheric temperature, the isoparametric measurement of atmospheric molecule density; Raman scattering (Raman scattering) can be divided into rotary Raman and vibrating Raman scattering, it is a kind of inelastic scattering that causes by atmospheric molecule or atom, scattering spectra is distributed in the both sides of incident laser spectral line, its scattering cross-section is less a kind of in the various scattering mechanisms, need high efficiency beam split and detection system, but because its special scattering mechanism, be well suited for being used for atmospheric sounding temperature, water-vapour density and Atmospheric components.
Laser radar system of the present invention adopts Raman scattering mechanism exactly, and utilizing atmospheric molecule (mainly is N 2, O 2) pure rotational raman scattering intensity be used to measure the temperature of atmosphere, utilize the Density Distribution of the vibrating Raman scattering strength atmospheric sounding steam of the vapour molecule generation in the atmosphere, simultaneously in conjunction with the rotational raman scattering signal of atmospheric molecule, inverting obtains the distribution that has the relative humidity of vital role in meteorology/climatology research.
Fig. 1 is the embodiment of a kind of laser radar system provided by the invention, and laser radar system is made of emission coefficient 1, receiving system 2, beam split and photodetector system 3 and data handling system 5.Emission coefficient 1 comprises Nd:YAG laser instrument 6 and is used for the beam expander 4 that the paired pulses laser beam expands bundle and collimation.Nd:YAG laser instrument 6 sends the pulse laser beam that wavelength is 355nm, after beam expander 4 expands bundle, and vertical directive atmosphere; The rear orientation light that produces behind molecule in laser and the atmosphere and the particle interaction is received by telescope receiving system 2, optical splitter in optical fiber importing beam split and photodetector system 3, the atmospheric backscatter light beam split that optical splitter receives receiving system 2 becomes the required various light signals of this laser radar, and, send into data handling system 5 again and handle by the photoelectric detector detection; Data handling system 5 comprises high speed high-accuracy data collection card, industrial computer, testing system software and for to obtain data analysis and the calculating that measurement result is carried out, finally tries to achieve the depolarization ratio of Temperature numerical, water-vapour density, atmospheric aerosol optical property parameter and the nonspherical particle rear orientation light of atmosphere.
The used laser instrument of system of the present invention is the Nd:YAG pulsed laser, and has optics and the structure that can export its third-harmonic component (λ 0=355nm) and launch, adopts telescope as receiving system.
In order to make the same laser radar system parameter of can making weather observations, can observe atmospheric environment again, just must effectively separate each scattered signal spectral component in the atmosphere echoed signal, and detect, also to effectively utilize its mutual relationship to carry out analysis and solution.Among the present invention in beam split and the photodetector system 3 effect of optical splitter be exactly with the rotary Raman spectral line in the echoed signal, the vibrating Raman spectral line of vapour molecule separates with sun bias light with rice-Rayleigh scattering spectral line, suppresses the interference of Mie scattering, Rayleigh scattering signal and sun bias light in the humiture detection channels to the full extent.
Fig. 2 is that one of beam split of the present invention and photodetector system formed embodiment.Beam split and photodetector system 3 are made up of optical splitter and photoelectric detector, comprise a high spectral resolution grating Grating, edge reflections mirror Edge_mirror, 5 spike interference filter IF_1, IF_2, IF_3, IF_4, IF_5, spectroscope BS, polarization spectroscope PBS and Photoelectric Detection parts PMT_1, PMT_2, PMT_3, PMT_4, PMT_5 and PMT_6.The rear orientation light of atmosphere is received by telescope, via optical fiber, condenser L_1 shines on the high spectral resolution grating Grating, utilize the grating diffration effect, atmospheric backscatter signal and solar spectrum that radar receives are separated from the space, matched edges catoptron Edge_mirror, the anti-Stokes spectral line of the pure rotational raman spectrum in the atmospheric backscatter spectrum that receives is separated from the space with Mie-Rayleigh scattering spectrum and solar spectrum, allow the Mie-Rayleigh signal see through the edge reflections mirror, and allow the rotary Raman signal by the edge reflections mirror reflection.
The Raman signal of reflection incides on the spike interference filter IF_1 through lens L_3, the signal that sees through spike interference filter IF_1 sees through spike interference filter IF_2 again, and (IF_1 is identical with the centre wavelength of IF_2, be λ 1 (as: λ 1=353.9nm), incident angle is identical, the direction difference), received by photomultiplier PMT_1 after lens L_4 focuses on, this is a passage 1; Signal by spike interference filter IF_1 reflection, directive spike interference filter IF_3, the signal that sees through spike interference filter IF_3 sees through spike interference filter IF_4 again, and (IF_3 is identical with the centre wavelength of IF_4, be λ 2 (as: λ 2=353.1nm), incident angle is identical, the incident direction difference), received by photomultiplier PMT_2 after lens L_5 focuses on, this is a passage 2; In relating to optical filter, having separated centre wavelength is the rotational raman scattering signal of λ 1 and λ 2, simultaneously the noise signal signal is carried out 2 high precision filterings, to satisfy the temperature survey requirement in daytime and high density gasoloid space with the arrowband of these 2 wavelength.The signal of passage 1 and passage 2 is used to measure atmospheric temperature.
The atmosphere echoed signal that receives is after via grating Grating diffraction, also can tell wavelength is the vibrating Raman signal of 407.5nm, after mirror M 1 reflection, directive spike interference filter IF_5 (centre wavelength of IF_5 is 407.5nm), after focusing on, lens L_6 receives by photomultiplier PMT_3, this is a passage 3, is used to measure water vapor.
The Mie-Rayleigh scattered signal that sees through edge reflections mirror Edge_mirror is used to measure the aerosol properties parameter, this part light beam is behind lens L_7 collimation, directive spectroscope BS, the light beam that sees through spectroscope BS is after lens L_8 focuses on, receive by photomultiplier PMT_4, this is a passage 4, is used to measure the aerosol optical characteristics parameter.Be divided into 2 parts by spectroscope BS beam reflected again through polarization spectroscope PBS:, received by photomultiplier PMT_5 after lens L_9 focuses on by the PBS beam reflected, this is a passage 5; The light beam that sees through polarization spectroscope PBS is received by photomultiplier PMT_6 after lens L_10 focuses on, and this is a passage 6.Passage 5 and passage 6 are used to measure the degree of polarization of particulate.
The centre wavelength of spike interference filter IF_1 and IF_2 is identical, the centre wavelength of spike interference filter IF_3 and IF_4 is identical, and two wavelength should be located at the same side of optical maser wavelength simultaneously, its centre wavelength position will be made its corresponding theory according to pure rotational raman scattering spectral function and calculate, the centre wavelength of spike interference filter IF_1 and IF_2 is located at the rotary Raman signal to be varied with temperature rate and is minimum place (λ 1), to vary with temperature rate be maximum (λ 2) and the centre wavelength of spike interference filter IF_3 and IF_4 is located at the rotary Raman signal, and its beam incident angle is between 0~10 degree.
Fig. 3 is two the optical filter centre wavelength being determined in the beam splitting system of the present invention and the curve map of rotational raman spectrum relation.The anti-Stokes of selecting to survey pure rotational raman spectrum props up, according to rotary Raman signal backscattering cross formula, can calculate the N2 molecule as shown in Figure 3 at the variation of drawing scattering cross-section at different wave length place and temperature coefficient, because the lower atmosphere layer temperature range, is got T=200K and T=300K here respectively at 200K-300K and is calculated.As seen from the figure, at 353.9nm spectrum place, Raman signal is with the negative rate of change maximum of temperature, and at 353.1nm spectrum place, Raman signal is maximum with the positive rate of change of temperature.For two Raman signals that guarantee to survey all have certain intensity, selected spike interference filter will guarantee certain bandwidth, thereby the centre wavelength of two interference filters can not be too close, and the central wavelength lambda 1 and the λ 2 that get two spike interference filter IF_1 and IF_2 are respectively 353.9nm and 353.1nm.
Because the low quantum number of the pure rotary Raman spectral line of atmosphere and the intensity of high quantum number spectral line can reduce respectively with the rising of temperature and strengthen, select the Raman signal of above-mentioned 2 centre wavelengths for use, and 2 measuring-signals are carried out difference processing, the temperature survey susceptibility of system become 2 channel temperature susceptibilitys and, thereby improved the whole thermometric sensitivity characteristic of system.
Fig. 4 is definite synoptic diagram of edge reflections mirror position in the beam splitting system of the present invention, utilize high spectral resolution grating Grating that the atmospheric scattering signal that system receives is carried out beam split, the spectral resolution of grating is 6pm, and the diffraction light focusing length is 300mm, gets 1 order diffraction level time.Calculated by grating equation, wavelength is that the diffraction light of λ 1 and λ 2 and air line distance that wavelength is the diffraction light of λ 0=354.67nm are respectively 0.66mm and 1.37mm behind condenser.As seen, utilize optical grating diffraction, scattered signal and the Mie-Rayleigh scattered signal of Raman wavelength X 1 and λ 2 can be separated with spectrum from the space, and also spectrum of sunlight be separated simultaneously.
Scattered signal spectrum can be reduced to Gauss model, get spot diameter d0=0.30mm earlier, temperature T=300K, behind grating beam splitting, rotational quantum number is respectively 6 and 14 rotation Raman scattered signal intensity and Mie-Rayleigh scattered signal intensity along the distribution of x axle as shown in Figure 4.As seen from Figure 4, the shading position of edge reflections mirror Edge_mirror is located at the 0.43mm place, Mie-Rayleigh scattered signal and most of sun bias light are seen through, and with the Raman scattering signal reflex to narrow band pass filter.
According to spectral position shown in Figure 4, the shading position of edge reflections mirror Edge_mirror is located at the 0.43mm place, the shading position of each scattered signal from the edge reflections mirror begun to carry out integration along the x axle, and getting the raman scattering cross section intensity that J=6 obtains admission passage 1 is 1.199 * 10 -34, getting the raman scattering cross section intensity that J=14 obtains admission passage 2 is 0.62 * 10 -34, the residue Mie scattering cross-sectional strength and the Rayleigh cross-section intensity that enter in each passage are respectively 0.3 * 10 -34With 1.128 * 10 -34Change spot diameter d0=0.25mm, the spectral distribution of Mie-Rayleigh scattered signal also is shown among the figure, and behind the integration, obtaining entering the interior remaining Rayleigh cross-section of each passage intensity is 1.166 * 10 -35, signal intensity has reduced an order of magnitude again.
By above analysis as seen, utilize grating beam splitting, and by the edge reflections mirror, can reach 4 orders of magnitude to the inhibiting rate of Mie-Rayleigh scattered signal, and spectrum of sunlight can be separated and suppress simultaneously.With respect to only using the spike interference filter beam split, what this light-splitting method spectral resolution will be high is many, more benefits filtering Mie-Rayleigh scattered signal and sun bias light, has realized simultaneously the high-level efficiency of Raman signal is obtained.
Scattered signal respectively by spike interference filter IF_1, IF_2 and IF_3, IF_4, makes the Mie-Rayleigh scattered signal be suppressed 3 more than the order of magnitude again behind grating beam splitting and edge reflections mirror again.So far, the whole optical path system reaches 7 more than the order of magnitude to the inhibiting rate of Mie-Rayleigh scattered signal.
Fig. 5 is the intensity distribution of atmosphere echoed signal after optical splitter filters.
The radiant flux density of supposing near the sun bias light the wavelength X by day 0 is 300W/m2/sr/ μ m, according to the systematic parameter of laser radar, can estimate near wavelength X 1 and λ 2 spectrum lines, and the sun bias light intensity that system detects is 3.7 * 10 -11[W].Systematic parameter according to atmosphere Mie scattering signal model and radar, and consider that beam splitting system has the rejection rate of 7 orders of magnitude to the Mie-Rayleigh scattered signal, can calculate each scattered signal of entering radar system and sun background light intensity with surveying height profile by laser radar equation, its result as shown in Figure 5.
As seen from Figure 5, block and the optical filtering of spike interference filter through grating beam splitting, edge reflections mirror, rejection rate to the Mie-Rayleigh scattered signal reaches 7 orders of magnitude, guaranteed the system signal noise ratio that thermometric is required effectively, and the Raman signal of surveying than sun background light intensity, thereby can be realized low latitude atmospheric temperature detecting on daytime below the 2.5km height.
Fig. 6 is attainable daytime and the measurement signal to noise ratio (S/N ratio) at night and the height profile figure of thermometric error on the Systems Theory of the present invention.According to the photon number of residue Mie-Rayleigh flashlight subnumber and sun bias light in Raman scattering flashlight subnumber that receives separately in passage 1 and the passage 2 and the passage, the total signal to noise ratio snr of the system that calculates is shown in Fig. 6.Got Measuring Time 10 minutes,, obtain temperature error and also be shown in Fig. 6 with the change curve of surveying height R, the detecting temperature error in the cards when having provided day and night observation simultaneously in Fig. 6 is with the height change curve.
Data handling system 5 comprises multi-channel synchronous high-speed a/d capture card, industrial computer, and be the listed data inversion method and the corresponding application software thereof of parameters such as vertical distribution of trying to achieve the depolarization ratio of atmospheric temperature, water-vapour density (relative humidity) and atmospheric aerosol extinction coefficient, aerosol optical depth and nonspherical particle rear orientation light.
After the conversion of signals of A/D capture card, send into that computing machine writes down and analyzing and processing by the detected signal of each photomultiplier (PMT_1-PMT_6).For the measuring-signal that is obtained by passage 1 and passage 2, computing machine can be obtained the height profile of atmospheric temperature by separating the rotational raman scattering laser radar equation.For the measuring-signal that is obtained by passage 3, computing machine can be obtained the height profile of water-vapour density by separating vibrating Raman scattering laser radar equation.For the measuring-signal that is obtained by passage 4, computing machine can be obtained optical parametrics such as Aerosol Extinction, backscattering coefficient by separating the Mie scattering laser radar equation.For the measuring-signal that is obtained by passage 5 and passage 6, computing machine can be obtained the depolarization ratio of nonspherical particle rear orientation lights such as cirrus and sand and dust gasoloid by the depolarization laser radar equation.
Specifically comprise:
1. can detect the Raman scattering signal that obtains according to Photoelectric Detection parts PMT_1 and PMT_2, obtain the intensity of surveying two signals obtaining and the strength ratio of two signals by the Raman scattering laser radar equation, sensitivity and system compensation parameter that the coupling system temperature is surveyed are tried to achieve the Temperature numerical of atmosphere.By utilizing the signal to noise ratio (S/N ratio) of the Raman scattering signal that sensitivity that temperature surveys and detection obtain, obtain the temperature detecting error of system then.
2. can detect the water vapor vibrating Raman scattering strength signal that obtains according to Photoelectric Detection parts PMT_3, utilize water vapor Raman lidar equation and rotary Raman laser radar equation, eliminate the influence of atmospheric extinction coefficient, try to achieve water-vapour density through inverting.
3. can detect the rice-Rayleigh scattering signal that obtains according to Photoelectric Detection parts PMT_4, press the Mie scattering laser radar equation, try to achieve the atmospheric aerosol optical property parameter through inverting.
4. detect the parallel and vertical polarization component signal of the scattered signal identical that obtains according to Photoelectric Detection parts PMT_5 and PMT_6, press the polarization laser radar equation, try to achieve the depolarization ratio of nonspherical particle rear orientation light through inverting with the Laser emission frequency.

Claims (6)

1. meteorology and atmospheric environment observation Raman scattering laser radar system is characterized in that this system comprises:
An emission coefficient (1) is used for sending pulse laser to atmosphere;
A receiving system (2) is used for receiving the atmosphere echoed signal that produces behind the molecule of above-mentioned laser and atmosphere and the particle interaction, and this echoed signal is sent into
Beam split and photodetector system (3) comprise
Optical splitter is used for the rotary Raman spectral line with this echoed signal, the vibrating Raman spectral line of vapour molecule separate with sun bias light with rice-Rayleigh scattering spectral line and
Photoelectric detector is used for that the various scattered light signals after the above-mentioned separation are become electric signal and receives and send into
A data disposal system (5), be used to receive above-mentioned electrical signal converted, carry out analyzing and processing, based on the program of finding the solution laser radar equation, try to achieve the depolarization ratio of Temperature numerical, water-vapour density, atmospheric aerosol optical property parameter and the nonspherical particle rear orientation light of atmosphere according to preloaded respectively.
2. according to the described laser radar system of claim 1, it is characterized in that described emission coefficient (1) comprises the pulse laser beam that Nd:YAG laser instrument (6) and reception Nd:YAG laser instrument (6) send and expands bundle and the beam expander (4) of collimation.
3. according to the described laser radar system of claim 1, it is characterized in that described receiving system (2) is a telescope.
4. according to the described laser radar system of claim 1, it is characterized in that, described beam split and photodetector system (3) comprise a high spectral resolution grating Grating, edge reflections mirror Edge_mirror, 5 spike interference filter IF_1, IF_2, IF_3, IF_4, IF_5, spectroscope BS, polarization spectroscope PBS and Photoelectric Detection parts PMT_1, PMT_2, PMT_3, PMT_4, PMT_5 and PMT_6
After lens light gathering, the water vapor vibrating Raman scattered light of different wave length, rotational raman scattering light, rice-Rayleigh scattering light and sun bias light spectral signal are ordered space by wavelength and arrange high spectral resolution grating Grating on lens focal plane with the atmospheric backscatter optical diffraction; Described edge reflections mirror Edge_mirror allows rice-Rayleigh scattering light and most of sun bias light pass through, and rotational raman scattering light is reflected, after the rotational raman scattering light part of reflection sees through spike interference filter IF_1 and IF_2, be that the light at center is seen through selectively only, detect by Photoelectric Detection parts PMT_1 with first frequency component λ 1; Another part sees through spike interference filter IF_3 and IF_4 after spike interference filter IF_1 surface reflection, be that the light at center is seen through selectively with second frequency component λ 2 only, is detected by Photoelectric Detection parts PMT_2; See through spike interference filter IF_5 by the isolated water vapor vibrating Raman of grating Grating diffraction scattered signal, detect by Photoelectric Detection parts PMT_3; See through rice-Rayleigh scattering signal of edge reflections mirror EM, BS is divided into two-way by spectroscope: a route Photoelectric Detection parts PMT_4 who sees through detects, a road of reflection is divided into two-way again through polarization spectroscope PBS, one route Photoelectric Detection parts PMT_5 detects, and another route Photoelectric Detection parts PMT_6 detects.
5. according to the described laser radar system of claim 4, it is characterized in that, the centre wavelength of described spike interference filter IF_1 and IF_2 is identical, the centre wavelength of spike interference filter IF_3 and IF_4 is identical, and two wavelength are located at the same side of optical maser wavelength simultaneously, the centre wavelength of spike interference filter IF_1 and IF_2 is located at the minimum place that the rotary Raman signal varies with temperature rate, the centre wavelength of spike interference filter IF_3 and IF_4 is located at the maximum that the rotary Raman signal varies with temperature rate, the centre wavelength of spike interference filter IF_5 is located on the wavelength of water vapor vibrating Raman signal, and its beam incident angle is between 0~10 degree.
6. according to the described laser radar system of claim 1, it is characterized in that, described data handling system (5) comprises multi-channel synchronous high-speed a/d capture card and industrial computer, is pre-loaded into the data analysis of the depolarization ratio of the Temperature numerical, water-vapour density, atmospheric aerosol optical property parameter and the nonspherical particle rear orientation light that carry out atmosphere, the program software of inverting in the described industrial computer.
CNB2006101051932A 2006-12-20 2006-12-20 Meteorology and atmospheric environment observation Raman scattering laser radar system Expired - Fee Related CN100543495C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2006101051932A CN100543495C (en) 2006-12-20 2006-12-20 Meteorology and atmospheric environment observation Raman scattering laser radar system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2006101051932A CN100543495C (en) 2006-12-20 2006-12-20 Meteorology and atmospheric environment observation Raman scattering laser radar system

Publications (2)

Publication Number Publication Date
CN1987520A true CN1987520A (en) 2007-06-27
CN100543495C CN100543495C (en) 2009-09-23

Family

ID=38184392

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2006101051932A Expired - Fee Related CN100543495C (en) 2006-12-20 2006-12-20 Meteorology and atmospheric environment observation Raman scattering laser radar system

Country Status (1)

Country Link
CN (1) CN100543495C (en)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101819275A (en) * 2010-04-20 2010-09-01 中国海洋大学 Doppler laser radar device for measuring multiple meterological parameters
CN101078765B (en) * 2007-07-05 2010-10-13 北京航空航天大学 Laser radar remote sensing polarized imaging system
WO2011066808A1 (en) * 2009-12-04 2011-06-09 中国海洋大学 High-spectrum resolution laser radar device with real-time calibration
CN102096068A (en) * 2010-11-29 2011-06-15 北方民族大学 Photonic crystal-based beam splitting system for rotating Raman temperature measurement laser radar
CN102200581A (en) * 2010-03-25 2011-09-28 澳门科技大学 High-precision moisture Raman system and scaling method using monochromator
CN101477196B (en) * 2009-01-16 2012-06-13 南京信息工程大学 Vibrating Raman lidar scattered light processing system and processing method
CN101923162B (en) * 2009-06-09 2012-08-22 中国科学院安徽光学精密机械研究所 Raman lidar calibration device and calibration method thereof
CN102830107A (en) * 2012-09-04 2012-12-19 南京信息工程大学 Laser radar detection method and system for measuring contents of solid water and liquid water in cloud
CN102937586A (en) * 2012-11-01 2013-02-20 南京信息工程大学 Laser radar based water-in-cloud raman scattering full-spectrum measurement system and method thereof
CN103308926A (en) * 2013-06-18 2013-09-18 浙江大学 Laser radar set with high spectral resolution
CN103698305A (en) * 2013-12-30 2014-04-02 中国科学院遥感与数字地球研究所 Method and system for observing atmospheric transmittance in real time
CN103777207A (en) * 2011-05-10 2014-05-07 中国海洋大学 Three-wavelength real-time calibration laser radar
CN103792544A (en) * 2014-02-17 2014-05-14 北京师范大学 Vibration-rotational Raman-Mie scattering multi-wavelength laser radar system and working method thereof
CN104007445A (en) * 2014-06-09 2014-08-27 南京中科神光科技有限公司 All-fiber laser radar aerosol detecting device
CN104076345A (en) * 2014-07-07 2014-10-01 北京理工大学 Saturation correction method for temperature measurement of pure rotational Raman lidar
CN104422640A (en) * 2013-09-06 2015-03-18 重庆大学 Laser-scattering-based air quality detecting system
CN104819916A (en) * 2015-05-14 2015-08-05 南京信息工程大学 Aerosol depolarization degree measuring method and aerosol depolarization degree measuring device
CN104914448A (en) * 2015-06-16 2015-09-16 中国科学技术大学 Range resolution active atmospheric turbulence laser radar system based on differential image motion method
CN105675576A (en) * 2016-04-13 2016-06-15 武汉大学 Laser radar system for measuring Raman spectra of atmospheric water and fluorescence spectra of aerosols
CN105891064A (en) * 2016-04-05 2016-08-24 山东大学 Non-spherical aerosol particle mixing ratio detecting method and device
CN106054158A (en) * 2016-08-09 2016-10-26 北方民族大学 Detection Raman laser radar light path system
CN106226842A (en) * 2016-07-13 2016-12-14 成都信息工程大学 A kind of city underlying surface aerosol method of testing to thunder and lighting process Influencing Mechanism
CN106483531A (en) * 2016-10-26 2017-03-08 中国科学院武汉物理与数学研究所 Air Raman Rayleigh scattering thermometric laser radar and inversion method
CN106643668A (en) * 2016-12-15 2017-05-10 长春理工大学 Atmosphere laser occultation signal generation and detection equipment
CN106772441A (en) * 2017-01-20 2017-05-31 武汉大学 A kind of ultraviolet pure rotary Raman thermometric laser radar system
CN106814371A (en) * 2017-01-20 2017-06-09 武汉大学 A kind of laser radar system for measuring atmospheric temperature and steam and aerosol
CN107543805A (en) * 2017-05-18 2018-01-05 苏州江南航天机电工业有限公司 The method and system that air microbe is monitored on-line in a kind of regional extent
CN107688187A (en) * 2017-08-16 2018-02-13 南京红露麟激光雷达科技有限公司 Target acquisition laser radar based on space wavelength coding
CN107991282A (en) * 2017-11-30 2018-05-04 青岛大学 A kind of method and system using satellite analysis air Ring effects
CN108614309A (en) * 2018-05-11 2018-10-02 西安理工大学 Cloud liquid water path detection system and method
CN110579812A (en) * 2019-08-30 2019-12-17 长春理工大学 On-board polarization method detection icing early warning system

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101078765B (en) * 2007-07-05 2010-10-13 北京航空航天大学 Laser radar remote sensing polarized imaging system
CN101477196B (en) * 2009-01-16 2012-06-13 南京信息工程大学 Vibrating Raman lidar scattered light processing system and processing method
CN101923162B (en) * 2009-06-09 2012-08-22 中国科学院安徽光学精密机械研究所 Raman lidar calibration device and calibration method thereof
WO2011066808A1 (en) * 2009-12-04 2011-06-09 中国海洋大学 High-spectrum resolution laser radar device with real-time calibration
CN102200581B (en) * 2010-03-25 2013-08-21 澳门科技大学 High-precision moisture Raman system and scaling method using monochromator
CN102200581A (en) * 2010-03-25 2011-09-28 澳门科技大学 High-precision moisture Raman system and scaling method using monochromator
CN101819275A (en) * 2010-04-20 2010-09-01 中国海洋大学 Doppler laser radar device for measuring multiple meterological parameters
CN102096068A (en) * 2010-11-29 2011-06-15 北方民族大学 Photonic crystal-based beam splitting system for rotating Raman temperature measurement laser radar
CN103777207B (en) * 2011-05-10 2015-12-30 中国海洋大学 A kind of three wavelength real-time calibration laser radars
CN103777207A (en) * 2011-05-10 2014-05-07 中国海洋大学 Three-wavelength real-time calibration laser radar
CN102830107A (en) * 2012-09-04 2012-12-19 南京信息工程大学 Laser radar detection method and system for measuring contents of solid water and liquid water in cloud
CN102937586A (en) * 2012-11-01 2013-02-20 南京信息工程大学 Laser radar based water-in-cloud raman scattering full-spectrum measurement system and method thereof
CN103308926A (en) * 2013-06-18 2013-09-18 浙江大学 Laser radar set with high spectral resolution
CN104422640B (en) * 2013-09-06 2017-01-25 重庆大学 Laser-scattering-based air quality detecting system
CN104422640A (en) * 2013-09-06 2015-03-18 重庆大学 Laser-scattering-based air quality detecting system
CN103698305B (en) * 2013-12-30 2016-03-02 中国科学院遥感与数字地球研究所 A kind of method and system of real-time monitored atmospheric transmissivity
CN103698305A (en) * 2013-12-30 2014-04-02 中国科学院遥感与数字地球研究所 Method and system for observing atmospheric transmittance in real time
CN103792544A (en) * 2014-02-17 2014-05-14 北京师范大学 Vibration-rotational Raman-Mie scattering multi-wavelength laser radar system and working method thereof
CN104007445A (en) * 2014-06-09 2014-08-27 南京中科神光科技有限公司 All-fiber laser radar aerosol detecting device
CN104076345A (en) * 2014-07-07 2014-10-01 北京理工大学 Saturation correction method for temperature measurement of pure rotational Raman lidar
CN104819916A (en) * 2015-05-14 2015-08-05 南京信息工程大学 Aerosol depolarization degree measuring method and aerosol depolarization degree measuring device
CN104914448A (en) * 2015-06-16 2015-09-16 中国科学技术大学 Range resolution active atmospheric turbulence laser radar system based on differential image motion method
CN105891064A (en) * 2016-04-05 2016-08-24 山东大学 Non-spherical aerosol particle mixing ratio detecting method and device
WO2017177710A1 (en) * 2016-04-13 2017-10-19 武汉大学 Laser radar system capable of simultaneously measuring raman spectra of water and fluorescence spectra of aerosol in atmosphere
CN105675576A (en) * 2016-04-13 2016-06-15 武汉大学 Laser radar system for measuring Raman spectra of atmospheric water and fluorescence spectra of aerosols
CN106226842A (en) * 2016-07-13 2016-12-14 成都信息工程大学 A kind of city underlying surface aerosol method of testing to thunder and lighting process Influencing Mechanism
CN106226842B (en) * 2016-07-13 2018-11-13 成都信息工程大学 A kind of test method of city underlying surface aerosol to thunder and lighting process Influencing Mechanism
CN106054158A (en) * 2016-08-09 2016-10-26 北方民族大学 Detection Raman laser radar light path system
CN106483531A (en) * 2016-10-26 2017-03-08 中国科学院武汉物理与数学研究所 Air Raman Rayleigh scattering thermometric laser radar and inversion method
CN106483531B (en) * 2016-10-26 2018-11-16 中国科学院武汉物理与数学研究所 Atmosphere Raman-Rayleigh scattering thermometric laser radar and inversion method
CN106643668B (en) * 2016-12-15 2019-12-17 长春理工大学 Atmospheric laser occultation signal generating and detecting equipment
CN106643668A (en) * 2016-12-15 2017-05-10 长春理工大学 Atmosphere laser occultation signal generation and detection equipment
CN106772441A (en) * 2017-01-20 2017-05-31 武汉大学 A kind of ultraviolet pure rotary Raman thermometric laser radar system
CN106772441B (en) * 2017-01-20 2020-08-07 武汉大学 Ultraviolet pure rotation Raman temperature measurement laser radar system
CN106814371B (en) * 2017-01-20 2020-06-09 武汉大学 Laser radar system for measuring atmospheric temperature, water vapor and aerosol
CN106814371A (en) * 2017-01-20 2017-06-09 武汉大学 A kind of laser radar system for measuring atmospheric temperature and steam and aerosol
CN107543805A (en) * 2017-05-18 2018-01-05 苏州江南航天机电工业有限公司 The method and system that air microbe is monitored on-line in a kind of regional extent
CN107688187A (en) * 2017-08-16 2018-02-13 南京红露麟激光雷达科技有限公司 Target acquisition laser radar based on space wavelength coding
CN107688187B (en) * 2017-08-16 2021-01-08 南京红露麟激光雷达科技有限公司 Target detection laser radar based on spatial wavelength coding
CN107991282B (en) * 2017-11-30 2020-05-26 青岛大学 Method and system for analyzing atmospheric Ring effect by using satellite
CN107991282A (en) * 2017-11-30 2018-05-04 青岛大学 A kind of method and system using satellite analysis air Ring effects
WO2019214166A1 (en) * 2018-05-11 2019-11-14 西安理工大学 Cloud water resource detection system and method
CN108614309A (en) * 2018-05-11 2018-10-02 西安理工大学 Cloud liquid water path detection system and method
US10739495B2 (en) 2018-05-11 2020-08-11 Xi'an University Of Technology Cloud water resource detecting system and method
CN108614309B (en) * 2018-05-11 2019-08-02 西安理工大学 Cloud liquid water path detection system and method
CN110579812A (en) * 2019-08-30 2019-12-17 长春理工大学 On-board polarization method detection icing early warning system

Also Published As

Publication number Publication date
CN100543495C (en) 2009-09-23

Similar Documents

Publication Publication Date Title
CN100543495C (en) Meteorology and atmospheric environment observation Raman scattering laser radar system
CN101004453B (en) Method for mensurating parameter of weather and atmospheric environment
CN103868831B (en) Cloud particle Spectral structure measuring method and measuring system
CN100495069C (en) Mie scattering polarization micro-pulse laser radar control method and device
CN101833089B (en) Doppler anemometry laser radar sensitivity calibrating system and method
US20120182541A1 (en) Apparatus and methods for obtaining multi-dimensional spatial and spectral data with lidar detection
Wang et al. 1.5 μm polarization coherent lidar incorporating time-division multiplexing
Comerón et al. Current research in lidar technology used for the remote sensing of atmospheric aerosols
CN102879359A (en) Atmospheric visibility measuring system
Niu et al. Design of a new multispectral waveform LiDAR instrument to monitor vegetation
CN106814371A (en) A kind of laser radar system for measuring atmospheric temperature and steam and aerosol
CN102879835A (en) Method for measuring laser rainfall weather phenomenon and laser rainfall weather phenomenon instrument
Wu et al. Mobile multi-wavelength polarization Raman lidar for water vapor, cloud and aerosol measurement
CN102323596A (en) Rotary Raman laser radar system based on the grating technology beam-splitting structure
CN106772438A (en) A kind of round-the-clock accurately measures the laser radar system of atmospheric temperature and aerosol parameters
CN105334519A (en) Laser radar system for simultaneously detecting multiple atmospheric parameters at high precision on the basis of three-channel F-P etalon
CN106772441A (en) A kind of ultraviolet pure rotary Raman thermometric laser radar system
CN106569227B (en) Atmospheric aerosol particulate matter detecting laser radar and inversion method
CN102096068A (en) Photonic crystal-based beam splitting system for rotating Raman temperature measurement laser radar
Mitchell et al. Ranging through shallow semitransparent media with polarization lidar
Wu et al. Fraunhofer lidar prototype in the green spectral region for atmospheric boundary layer observations
CN105738916B (en) EO-1 hyperion polarizes Atmospheric Survey laser radar system and control method
CN106093915B (en) A kind of beam splitting system of novel Raman thermometric laser radar
Nicolae et al. Laser remote sensing of tropospheric aerosol
CN107144856B (en) A kind of rotational Raman lidar system of high-acruracy survey 0-35km atmospheric temperature

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090923

Termination date: 20111220

C17 Cessation of patent right