CN107356915A - A kind of scaling method and calibration system of middle infrared differential absorption lidar - Google Patents
A kind of scaling method and calibration system of middle infrared differential absorption lidar Download PDFInfo
- Publication number
- CN107356915A CN107356915A CN201710810558.XA CN201710810558A CN107356915A CN 107356915 A CN107356915 A CN 107356915A CN 201710810558 A CN201710810558 A CN 201710810558A CN 107356915 A CN107356915 A CN 107356915A
- Authority
- CN
- China
- Prior art keywords
- gas
- concentration
- atmosphere pollution
- infrared differential
- measurement
- 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.)
- Pending
Links
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
- G01S7/497—Means for monitoring or calibrating
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of scaling method of middle infrared differential absorption lidar, this method carries out concentration mensuration by infrared differential absorption lidar use simultaneously in and existing atmosphere pollution detection instrument to the standard solid gas of various concentrations, obtains the linearly dependent coefficient between the measurement result of middle infrared differential absorption lidar and atmosphere pollution detection instrument.The present invention is demarcated by existing atmosphere pollution detection instrument centering infrared differential absorption lidar, it is possible to increase the measurement accuracy of middle infrared differential absorption lidar, while higher sensitivity, farther detection range can be obtained.
Description
Technical field
Present invention relates particularly to a kind of demarcation of the middle infrared differential absorption lidar of pollutant measure
Method.
Background technology
Laser radar is a kind of active contemporary optics remote sensing equipment, combines conventional radar technology and Modern Laser skill
Art, it is the product that traditional radio or microwave radar extend to optics frequency range.Laser radar spatial and temporal resolution is high, detection blind area
It is small, conventional detection instrument can be relatively well made up not with dusty gas particulate optical characteristic Characteristics of Vertical Distribution in atmospheric sounding
Foot.These particular advantages of laser radar, make it the effective means of detection study atmosphere pollution.In recent decades, greatly
The research and development of gas pollutant is quickly, it has also become an important branch of environmental monitoring.With Modern Laser radar system and technology
Development, laser radar detection atmosphere pollution technology, atmospheric environment, Atmospheric Chemistry, atmospheric radiation monitoring with analysis and
The fields such as climatic prediction are just playing very important effect.
Normal atmospheric pollutant monitoring mode mainly has electric chemical formula, catalytic combustion type, semiconductor-type and infrared-type, base
Single in the instrument probe gas species of these modes, distance is near, short life.Laser gas monitoring technology is to develop in recent years
Come new gas Detection Techniques, feature be it is non-contact without sampling, high sensitivity, the response time soon, can long-haul telemetry.Mesh
Before, the most frequently used spectral technique has the differential optical absorption spectrum of ultraviolet/visible waveband in domestic and international laser radar system
(DOAS), Fourier trasform spectroscopy (FTIR), the tunable semiconductor laser of DIAL (DIAL), infrared band
Absorption spectrum (TDLAS) etc..Prior art uses ultraviolet, near-infrared fixed wave length laser more, and gas absorption is weaker in this wave band,
Laser limited transmission distance in an atmosphere.Many toxic and harmful gas have strong absworption peak (than visible in middle infrared band
Light and near infrared band absorb high several orders of magnitude), infrared band can obtain higher sensitivity, farther detection in utilization
Distance.
Therefore, on the basis of existing instrument, centering infrared differential absorption lidar is surveyed data accuracy and demarcated
It is most important to follow-up practical application.
The content of the invention
The invention aims to solve defect present in prior art, there is provided a kind of centering infrared differential, which absorbs, to swash
Scaling method of the optical radar to atmosphere pollution measurement data.
In order to achieve the above object, should the invention provides a kind of scaling method of middle infrared differential absorption lidar
Method is by infrared differential absorption lidar use simultaneously in and existing atmosphere pollution detection instrument to various concentrations
Standard solid gas carries out concentration mensuration, obtains the measurement of middle infrared differential absorption lidar and atmosphere pollution detection instrument
As a result the linearly dependent coefficient between.
Further, scaling method is demarcated including absorption cell, is concretely comprised the following steps：
(1) when the standard solid gas of various concentrations is filled with into absorption cell and balloon, and ensureing measurement every time, absorption cell
It is consistent with gas concentration in balloon；
(2) using gas concentration value in atmosphere pollution detection instrument measure balloon, as reference concentration；
(3) infrared differential absorption lidar sends light path and is divided into two-way in, enters the second power by absorption cell all the way
Meter, another way are directly entered the first power meter, are calculated by the first power evaluation and the second power evaluation corresponding in absorption cell
Gas concentration, as measurement concentration；
(4) reference concentration and measurement concentration are fitted, draw linearly dependent coefficient between the two.
Further, above-mentioned scaling method also includes opening demarcation, concretely comprises the following steps：
(1) opening is selected as demarcation place, infrared differential absorption lidar and existing air in placement
Detection of pollutants instrument；
(2) infrared differential absorption lidar in adjusting, makes its horizontal emission laser；Using big under different measuring conditions
Gas detection of pollutants instrument and middle infrared differential absorption lidar carry out the measurement of concetration of standard solid gas simultaneously；Measure bar
Part is：Dusty gas is not discharged, various concentrations standard solid gas is discharged successively by low concentration to high concentration；Various concentrations standard
The off-position of dusty gas is atmosphere pollution detection instrument opening position；Atmosphere pollution is drawn according to measurement result respectively
The measurement concentration profile of detection instrument and middle infrared differential absorption lidar；
(3) measurement of the atmosphere pollution detection instrument and middle infrared differential absorption lidar that are obtained according to step (2)
Concentration profile, draw the linearly dependent coefficient between two measurement results.
Wherein, atmosphere pollution detection instrument uses high sensitivity thermoelectrometry apparatus or portable nitrogen oxides.
Present invention also offers using above-mentioned scaling method calibration system, including middle infrared differential absorption lidar,
Beam splitter, absorption cell, the first power meter, the second power meter, computer, balloon, gas pouch, atmosphere pollution detection instrument；Inflation
When, the outlet side of the gas pouch connects absorption cell and balloon respectively；The middle infrared differential absorption lidar transmitting laser
Two-way is divided into by beam splitter, enters the first power meter after absorption cell all the way, another way is directly entered the second power meter, the
One power meter and the second power meter connect computer respectively；The atmosphere pollution detection instrument is connected with balloon.
Wherein, atmosphere pollution detection instrument uses high sensitivity thermoelectrometry apparatus or portable nitrogen oxides.
High sensitivity thermoelectrometry apparatus Measurement Resolution is 0.01ppm, the degree of accuracy is full scale ± 2%.
Absorption cell is short light path gas absorption cell, and optical path length is 500 millimeters, 157 milliliters of volume, and window diameter 12.7 is in the least
Rice.
The present invention has advantages below compared with prior art：
Demarcated by existing atmosphere pollution detection instrument centering infrared differential absorption lidar, it is possible to increase in
The measurement accuracy of infrared differential absorption lidar, while higher sensitivity, farther detection range can be obtained.
Brief description of the drawings
Fig. 1 is the system structure diagram of absorption cell of the present invention demarcation；
Fig. 2 is the system structure diagram of opening of the present invention demarcation.
In figure, infrared differential absorption lidar in 1-, 2- absorption cells, the power meters of 3- first, the power meters of 4- second, 5- electricity
Brain, 6- atmosphere pollution detection instruments, 6A- high sensitivity thermoelectrometry apparatuses, the portable nitrogen oxides detectors of 6B-, 7- balloons, 8- gas
Body bag, the hard targets of 9-, 10- beam splitters.
Embodiment
The present invention provide one kind can the sensitivity of centering infrared differential absorption lidar systematic survey, accuracy determined
Calibration method, this method are using measurement resolution as the thermoelectrometry apparatus of 0.01ppm, the degree of accuracy for full scale ± 2% and portable nitrogen
The measurement result of oxide detector is as reference, and calibration precision is high, relative error is small.
In order to better illustrate the present invention relates to scaling method, divide below two parts combination accompanying drawing to the present invention carry out
Describe in detail.Part I is absorption cell internal standard concentration calibration, and infrared differential is inhaled in being measured under known gas concentration levels
It is related to existing atmosphere pollution detection instrument (thermoelectrometry apparatus, portable nitrogen oxides detector) measurement result to receive laser radar
Coefficient, laid the foundation for the demarcation of follow-up measurement capability；Part II be opening demarcation, be divided into release nitrogen dioxide gas with
Nitrogen dioxide gas is not discharged, infrared differential absorption lidar measurement accuracy and sensitivity in confirmation, centering infrared differential
Absorption lidar measurement accuracy is demarcated.
Introduce specific steps and respective algorithms in two sub-sections below：
(1) absorption cell internal standard concentration calibration：
Step：
(1) intend before testing, carry out preparation before each unit test of instrument in advance according to instrument use demand respectively,
(high sensitivity thermoelectrometry apparatus 6A, portable nitrogen oxides detector 6B and middle infrared differential absorb and swashed each instrument in this calibrating method
Optical radar 1) by placement as shown in Figure 1.Air in absorption cell 2 is emptied using vavuum pump, absorption cell 2 is placed in figure middle position
Put.Each instrument be in can working condition, after system mode is stable, use wavemeter measurement optical maser wavelength, it is ensured that optical maser wavelength is steady
It is fixed；It is two-way that wherein middle infrared differential absorption lidar 1, which launches laser by beam splitter 10, laggard by absorption cell 2 all the way
Enter the first power meter 3, another way is directly entered the second power meter 4, and the first power meter 3 and the second power meter 4 connect computer respectively
5, into data collecting system；
(2) is under balanced air pressure, state of temperature, and instrument show value when survey absorption cell, balloon 7 are not filled with dusty gas is more
Secondary measurement is averaged as the zero point error x in follow-up measurement process01With y01；
(3) be filled with by the gas pouch 8 equipped with nitrogen dioxide gas into absorption cell 2, balloon 7 be filled with respectively it is different dense
The standard solid gas of degree, concentration value change from low to high, are initially filled with concentration value close to calibration instrument high sensitivity thermoelectrometry apparatus
Measurement Resolution value smaller value in 6A, portable nitrogen oxides detector 6B, and be filled with gas concentration and changed directly using dichotomy
Concentration value and high sensitivity thermoelectrometry apparatus 6A, portable nitrogen oxides detector 6B are surveyed to middle infrared differential absorption lidar 1
Close, thus, repeatedly measurement takes minimum value as infrared differential absorption lidar measurement sensitivity S in confirming1；
(4) records mutually descend high sensitivity thermoelectrometry apparatus 6A, portable nitrogen oxides detector 6B concentration values and absorption in the same time
The first power meter 3 and the second power meter 4 are worth before and after pond, and it is dense to calculate the corresponding gas of transmitance mean value calculation in absorption cell 5 minutes
Angle value and optical maser wavelength, whole process will ensure pressure, temperature close to pressure when not being filled with dusty gas in absorption cell, temperature
Degree；
(5) is fitted to measurement concentration and actual concentrations, draws middle infrared differential absorption lidar 1 and height respectively
Sensitivity thermoelectrometry apparatus 6A, portable nitrogen oxides detector 6B linearly dependent coefficient two-by-two, analysis system measurement result accuracy.
Algorithm：
(1) described in steps as measured above, by measuring respective power P 1, P2 of two light paths after the light splitting of radar emission light path,
Calculate transmitance of the standard gas adsorption pond on, off wavelength
Wherein σOn, offFor gas molecules sorb section, NLFor Loschimite constants 2.687 × 1019For in unit volume
Gas molecule Particle density, ε are total gas volume percentage shared by dusty gas, and L is absorption cell optical length.P (R) is environment pressure
By force, T (R) is environment temperature.
(2) optical path splitting ratio is calculated
(3) actual measurement air body absorption cell transmitance is calculated
(4) actual measurement charge air conditioning absorption cell transmitance is calculated
(5) actual measurement gas cell concentration x is calculated
According to formula in (1) formula, τ is made0=τ2, calculate Nm, i.e. the Particle density of gas, according to molecular weight and Avobenzene gal moral
The Particle density conversion of gas is unit mg/m by sieve constant3Concentration value x.
(6) linear regression formula is utilized, infrared differential absorption lidar and thermoelectrometry apparatus, portable nitrogen oxides in calculating
Detector measurement concentration linearly dependent coefficient r.
Xi=x-x01Yi=y-y01
Wherein, x, y are that middle infrared differential absorption lidar and thermoelectrometry apparatus (or portable detector) measure nitrogen dioxide
Concentration show value；
xi、yiFor measured value after two instrument background amendments；
x0To be filled with dusty gas concentration in absorption cell；
x01And y01Respectively middle infrared differential absorption lidar and thermoelectrometry apparatus (or portable detector) sample-out count
Value；
N is pendulous frequency.
(2) opening is demarcated：
Step：
(1), selection more opening can be easy to place system, dispose calibration instrument as shown in Figure 2 as calibration place
Device.Distance is 30 meters between setting the hard target 9 of target, such as campus basketball court, and can carry out at night and calibrate, can avoid idler couple
Interference caused by experiment；
(2) in advance disposes middle infrared differential absorption lidar system and measuring instrument according to each instrument requirement
In measuring environment, beaten in middle infrared differential absorption lidar 1 to being equidistantly positioned other two kinds measurements on the hard target direction of target 9
Instrument 6 (high sensitivity thermoelectrometry apparatus or portable nitrogen oxides detector) settlement, three instrument can be just opened after being all connected with properly
Device, and calibration and usage instrument is calibrated respectively, and swashed by infrared differential absorption lidar horizontal emission in the guarantee of hard target 9
Light；
(3) ensures three instruments under measurable state, and hard targets are moved with 30 meters of intervals, in thermoelectrometry apparatus, portable
Detector lay down location discharges nitrogen dioxide gas, and measuring condition is not by discharging dusty gas, gas low concentration to gas high concentration
Discharge successively, and various concentrations gas is discharged behind each hard target shift position, three kinds of instruments measure 10 minutes gas concentrations
Value, to cause the wealthy line Long-term change trend of concentration to tend to measured value, will finally measure average value as measured value；
(4) for after in view of coefficient correlation between zero point error and instrument, being drawn using spot measurement concentration value has distance
The concentration profile of resolution ratio, the result of three kinds of measuring instruments is contrasted, analysis system measurement accuracy, sensitivity and dusty gas exist
The time and space regularity of distribution in air, draw measurement result linearly dependent coefficient between instrument.
Algorithm：
(1) when DIAL is in measuring route concentration, radar equation can be expressed as：
Wherein, PtIt is peak power, c is the light velocity, and τ is laser radar system transmitance, and A looks in the distance mirror area, η reception systems
Efficiency, β (R) atmospheric backscatter coefficient, α (R) atmospheric extinction coefficient, C are under test gas concentration, and L is that gas absorbs light path,
γOn, offFor gas molecules sorb coefficient, R is detection range.Generally regard CL as a variable, turn into concentration light path product, also may be used
C is referred to as gas mean concentration under the light path.
(2) after infrared differential absorption lidar measures on and off pulse accumulation echo-signals among, first to returning
Ripple signal is pre-processed：
1. selection distant location signal (2~3km) is deducted point by point as background signal；
2. denoising smooth is carried out to signal using slipping smoothness, Wavelet Denoising Method scheduling algorithm；
(3) is accumulated to the signal by pretreatment using the mean concentration or concentration light path of ratio method inverting gas, and formula is such as
Under：
Wherein, C represents gas path mean concentration, and CL accumulates for concentration light path, and Δ γ is the Difference Absorption system of gas molecule
Number, PonAnd PoffFor two wavelength echo powers.T items are atmospheric extinction error term.
(4) is using gas path mean concentration C as measurement concentration value x, using linear regression formula, Infrared Difference in calculating
Divide absorption lidar and thermoelectrometry apparatus (portable detector) measurement concentration linearly dependent coefficient r.
Xi=x-x01yi=y-y01
Wherein, x, y are that middle infrared differential absorption lidar and thermoelectrometry apparatus (portable detector) measurement nitrogen dioxide are dense
Spend show value；xi、yiFor measured value after two instrument background amendments；
x0To be filled with dusty gas concentration in absorption cell；
x01And y01Respectively middle infrared differential absorption lidar and thermoelectrometry apparatus (portable detector) sample-out count value；
N is pendulous frequency.
Claims (7)
- A kind of 1. scaling method of middle infrared differential absorption lidar, it is characterised in that：This method passes through red use simultaneously in Outer DIAL and existing atmosphere pollution detection instrument carry out concentration to the standard solid gas of various concentrations Measure, obtain the linearly related system between the measurement result of middle infrared differential absorption lidar and atmosphere pollution detection instrument Number.
- 2. scaling method according to claim 1, it is characterised in that：The scaling method is demarcated including absorption cell, specifically Step is：（1）When the standard solid gas of various concentrations is filled with into absorption cell and balloon, and ensureing measurement every time, absorption cell is gentle Gas concentration is consistent in ball；（2）Using gas concentration value in atmosphere pollution detection instrument measure balloon, as reference concentration；（3）Middle infrared differential absorption lidar sends light path and is divided into two-way, enters the second power meter by absorption cell all the way, separately The first power meter is directly entered all the way, is calculated, drawn by bringing the first power evaluation and the second power evaluation into correlation formula Corresponding gas concentration in absorption cell, as measurement concentration；（4）Reference concentration and measurement concentration are fitted, draw linearly dependent coefficient between the two.
- 3. scaling method according to claim 1 or 2, it is characterised in that：The scaling method also includes opening mark It is fixed, concretely comprise the following steps：（1）Opening is selected as demarcation place, infrared differential absorption lidar and existing atmosphere pollution in placement Thing detection instrument；（2）Infrared differential absorption lidar in regulation, make its horizontal emission laser；It is dirty using air under different measuring conditions Dye thing detection instrument and middle infrared differential absorption lidar carry out the measurement of concetration of standard solid gas simultaneously；Measuring condition For：Dusty gas is not discharged, various concentrations standard solid gas is discharged successively by low concentration to high concentration；Various concentrations standard is dirty The off-position for contaminating gas is atmosphere pollution detection instrument opening position；Draw atmosphere pollution physical prospecting respectively according to measurement result Survey the measurement concentration profile of instrument and middle infrared differential absorption lidar；（3）According to step（2）Obtained atmosphere pollution detection instrument and the measurement concentration of middle infrared differential absorption lidar Profile, draw the linearly dependent coefficient between two measurement results.
- 4. scaling method according to claim 3, it is characterised in that：The atmosphere pollution detection instrument is using highly sensitive Spend thermoelectrometry apparatus or portable nitrogen oxides.
- A kind of 5. calibration system using scaling method described in claim 2, it is characterised in that：The calibration system is red in including Outer DIAL, beam splitter, absorption cell, the first power meter, the second power meter, computer, balloon, gas pouch, air Detection of pollutants instrument；During inflation, the outlet side of the gas pouch connects absorption cell and balloon respectively；The middle infrared differential is inhaled Receive laser radar transmitting laser and two-way is divided into by beam splitter, enter the first power meter after absorption cell all the way, another way is straight Tap into and connect computer respectively into the second power meter, the first power meter and the second power meter；The atmosphere pollution detection instrument with Balloon is connected.
- 6. calibration system according to claim 5, it is characterised in that：The atmosphere pollution detection instrument is using highly sensitive Spend thermoelectrometry apparatus or portable nitrogen oxides.
- 7. calibration system according to claim 6, it is characterised in that：The absorption cell is short light path gas absorption cell, light Cheng Changdu is 500 millimeters, 157 milliliters of volume, 12.7 millimeters of window diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710810558.XA CN107356915A (en) | 2017-09-11 | 2017-09-11 | A kind of scaling method and calibration system of middle infrared differential absorption lidar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710810558.XA CN107356915A (en) | 2017-09-11 | 2017-09-11 | A kind of scaling method and calibration system of middle infrared differential absorption lidar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107356915A true CN107356915A (en) | 2017-11-17 |
Family
ID=60290874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710810558.XA Pending CN107356915A (en) | 2017-09-11 | 2017-09-11 | A kind of scaling method and calibration system of middle infrared differential absorption lidar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107356915A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490138A (en) * | 2018-05-10 | 2018-09-04 | 天津大学 | Judge the whether super calibration method of Pollution From Ships object according to Laser Radar Observation data |
| CN109655843A (en) * | 2019-01-16 | 2019-04-19 | 武汉大学 | Detect the pulsed infrared Differential Absorption Laser Radar System of gas concentration lwevel profile |
| CN110471046A (en) * | 2019-08-29 | 2019-11-19 | 南京信息工程大学 | A kind of Differential Absorption Laser Radar System constant calibrating method |
| CN110702236A (en) * | 2019-11-08 | 2020-01-17 | 中国计量科学研究院 | High-precision spectrum calibration method for optical fiber wavelength standard device |
| RU216578U1 (en) * | 2022-09-02 | 2023-02-14 | Федеральное государственное бюджетное учреждение науки Институт оптики атмосферы им. В.Е. Зуева Сибирского отделения Российской академии наук | AIRBORNE LIDAR IN THE MIDDLE INFRARED RANGE |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004025324A1 (en) * | 2002-09-10 | 2004-03-25 | Qinetiq Limited | Coherent differential absorption lidar (dial) |
| 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 |
| CN103293117A (en) * | 2013-05-03 | 2013-09-11 | 中国科学院合肥物质科学研究院 | Inversion method of micro-pulse differential absorption lidar water vapor spatial and temporal distribution |
| CN104237898A (en) * | 2014-10-07 | 2014-12-24 | 西南石油大学 | Natural gas leakage telemetering laser radar |
| CN204241344U (en) * | 2014-10-23 | 2015-04-01 | 浙江省环境保护科学设计研究院 | Based on the scenic spot road traffic pollution prior-warning device of remote sensing technology |
| CN106769952A (en) * | 2017-03-02 | 2017-05-31 | 南京红露麟激光雷达科技有限公司 | Gas DIAL based on incoherent light source |
| CN106872402A (en) * | 2017-03-22 | 2017-06-20 | 河北大学 | Gas-detecting device and method based on super continuous spectrums laser |
| CN106970392A (en) * | 2017-05-31 | 2017-07-21 | 南京先进激光技术研究院 | High sensitivity gaseous contamination detecting laser radar system |
-
2017
- 2017-09-11 CN CN201710810558.XA patent/CN107356915A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004025324A1 (en) * | 2002-09-10 | 2004-03-25 | Qinetiq Limited | Coherent differential absorption lidar (dial) |
| 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 |
| CN103293117A (en) * | 2013-05-03 | 2013-09-11 | 中国科学院合肥物质科学研究院 | Inversion method of micro-pulse differential absorption lidar water vapor spatial and temporal distribution |
| CN104237898A (en) * | 2014-10-07 | 2014-12-24 | 西南石油大学 | Natural gas leakage telemetering laser radar |
| CN204241344U (en) * | 2014-10-23 | 2015-04-01 | 浙江省环境保护科学设计研究院 | Based on the scenic spot road traffic pollution prior-warning device of remote sensing technology |
| CN106769952A (en) * | 2017-03-02 | 2017-05-31 | 南京红露麟激光雷达科技有限公司 | Gas DIAL based on incoherent light source |
| CN106872402A (en) * | 2017-03-22 | 2017-06-20 | 河北大学 | Gas-detecting device and method based on super continuous spectrums laser |
| CN106970392A (en) * | 2017-05-31 | 2017-07-21 | 南京先进激光技术研究院 | High sensitivity gaseous contamination detecting laser radar system |
Non-Patent Citations (1)
| Title |
|---|
| 刘豪: "大气二氧化碳探测差分吸收激光雷达技术研究", 《中国博士学位论文全文数据库信息科技辑》, pages 85 - 90 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490138A (en) * | 2018-05-10 | 2018-09-04 | 天津大学 | Judge the whether super calibration method of Pollution From Ships object according to Laser Radar Observation data |
| CN108490138B (en) * | 2018-05-10 | 2024-04-09 | 天津大学 | Method for judging whether ship pollutants exceed standard according to laser radar observation data |
| CN109655843A (en) * | 2019-01-16 | 2019-04-19 | 武汉大学 | Detect the pulsed infrared Differential Absorption Laser Radar System of gas concentration lwevel profile |
| CN110471046A (en) * | 2019-08-29 | 2019-11-19 | 南京信息工程大学 | A kind of Differential Absorption Laser Radar System constant calibrating method |
| CN110702236A (en) * | 2019-11-08 | 2020-01-17 | 中国计量科学研究院 | High-precision spectrum calibration method for optical fiber wavelength standard device |
| RU216578U1 (en) * | 2022-09-02 | 2023-02-14 | Федеральное государственное бюджетное учреждение науки Институт оптики атмосферы им. В.Е. Зуева Сибирского отделения Российской академии наук | AIRBORNE LIDAR IN THE MIDDLE INFRARED RANGE |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107356915A (en) | A kind of scaling method and calibration system of middle infrared differential absorption lidar | |
| CN109596594B (en) | Aerosol extinction coefficient inversion method based on Raman-Mi scattering laser radar | |
| Wandinger | Raman lidar | |
| CN201096521Y (en) | Non-contact type plasma temperature and electron density measuring apparatus | |
| WO1993019357A1 (en) | Remote active vapor concentration measurement system | |
| CN109100708A (en) | A kind of dual wavelength surveys steam laser radar caliberating device and scaling method | |
| CN104267019B (en) | A kind of demarcation of LR laser raman gas analyser and the method for detected gas concentration | |
| CN102944503A (en) | PM2.5 mass concentration value automatic inversion algorithm based on sun photometer and lidar | |
| CN106525742A (en) | Gas concentration monitoring method, apparatus and system | |
| CN104280362A (en) | Online high-temperature water vapor laser spectrum detection system | |
| CN103048653B (en) | Micro pulse lidar system constant calibration method | |
| CN110095248A (en) | A kind of non-equilibrium property diagnostic system of high-frequency induction Flow Field in Wind Tunnel and method | |
| CN103698298A (en) | Device for measuring gas concentration based on short cavity enhanced correlation spectroscopy, and method for measuring gas concentration by adopting device | |
| KR101894406B1 (en) | Linear Atmospheric Transmission Model Calculation Method | |
| CN105067563A (en) | Device and method for measuring mean concentration of gas in open space | |
| CN101694265A (en) | Real-time concentration calibration method of leakage detecting laser radar for on-board natural gas pipeline | |
| CN102564591B (en) | Spectrum analyzer and spectrum analyzing method | |
| CN105203526A (en) | Calibration-free remote quantitative laser-induced breakdown spectroscopy analysis method | |
| CN207164242U (en) | A kind of calibration system of middle infrared differential absorption lidar | |
| CN107389604B (en) | A kind of laser, which declines, swings detection method | |
| Bock et al. | Study of external path delay correction techniques for high accuracy height determination with GPS | |
| CN108181261A (en) | Device based on terahertz time-domain spectroscopy detection mixed gas each component content | |
| CN113296122A (en) | Laser radar quality control device | |
| CN110297257A (en) | A kind of method and system based on dopplerbroadening measurement atmospheric temperature | |
| CN111089846A (en) | Pollution source emission flux measurement method for synchronous observation of airborne DOAS and vehicle-mounted DOAS |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 210044 No. 219 Ning six road, Jiangbei new district, Nanjing, Jiangsu Applicant after: Nanjing University of Information Science and Technology Address before: No. 69, Jianye District, Jianye District, Nanjing, Jiangsu Applicant before: Nanjing University of Information Science and Technology |
|
| CB02 | Change of applicant information |