CN107272023A - A kind of device of the non-homogeneous horizontal air Aerosol Extinction in measurement sea level - Google Patents
A kind of device of the non-homogeneous horizontal air Aerosol Extinction in measurement sea level Download PDFInfo
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- CN107272023A CN107272023A CN201710447950.2A CN201710447950A CN107272023A CN 107272023 A CN107272023 A CN 107272023A CN 201710447950 A CN201710447950 A CN 201710447950A CN 107272023 A CN107272023 A CN 107272023A
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- G—PHYSICS
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- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
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Abstract
The invention discloses a kind of device of the non-homogeneous horizontal air Aerosol Extinction in measurement sea level, wherein, laser is divided into the first light beam and the second light beam by spectroscope, first light beam is used to be emitted directly toward in the horizontal air of extinction coefficient profile to be measured, the reflection of second light beam is injected in photodiode is converted into electric signal from optical signal, after transmit to Pico digital oscilloscopes, catadioptric astronomical telescope collects the back scattered echo-signal of the non-homogeneous horizontal air in sea level, condenser lens focuses on atmospheric backscatter echo-signal on filter plate, gate photomultiplier is used to optical signal segmentation being converted into electric signal, electric signal amplification is exported to Pico digital oscilloscopes, processor is used for data processing, it is additionally operable to send control signal to control the enlargement ratio for gating the enabling time delay of photomultiplier and adjusting controllable amplification module.The device of the present invention can be used for Measuring Oceanic lower atmosphere layer or the extinction coefficient profile for air on seaborne horizontal direction.
Description
Technical field
The invention belongs to atmospheric optics fields of measurement, in particular, one kind is based on improved Mie formulas scattering laser radar
Marine atmosphere aerosol Horizontal extinction coefficient profile measurement apparatus.
Background technology
In recent years, as economic develops rapidly, the destruction of environment is also increasingly severe, and the pollution of especially air is tight
The healthy and daily life of people is had influence on again, therefore, detection study is carried out to air and seems more important.
Well known atmospheric visibility (Visibility) can reflect the transparency of air, be and Atmospheric Survey
One of related physical quantity.Atmospheric visibility is an important meteorological observation key element, and the forecast of visibility value is applied not only to gas
As the synoptic analysis of department, moreover it is possible to be widely used in the communications and transportation such as aviation, navigation, highway, military and environmental monitoring
Deng field.
The essence that measures to atmospheric visibility is the measurement to Aerosol Extinction.Aerosol detection technology mainly can be with
It is divided into two major classes：Passive detection and active probe.Wherein, passive detection is mainly detected with ground too comprising satellite passive remote sensing again
Positive radiometer etc..Active probe is laser radar detection.
Laser radar is used for the characteristics of atmospheric aerosol detection has investigative range wide and high-spatial and temporal resolution, in recent years by
It is widely used in air and environment measuring field.Laser radar can be obtained abundant as a kind of active remote sensing prospecting tools
The related optical characteristics of aerosol, and accurate aerosol optical characteristics information can be provided, laser radar can be with satellite
Or aerial remote sensing detection is combined, the scope of application is relatively broad.
Using laser radar detection Aerosol Extinction Coefficients, typically for vertical air.Obtaining vertical air
After laser radar data the extinction coefficient profile inverting in vertical direction is carried out using Fernald methods.However, on ocean
The detection of horizontal air aerosol optical characteristics is also extremely to be necessary.Because during ship's navigation, ship is obtained in real time
Horizontal air visibility variation around only can be avoided because of the safety problems of navigation of the too low initiation of visibility.It is prior,
In terms of Military Application, there be the Aerosol Extinction distribution in region laser communication realizing efficient naval vessel between acquisition naval vessel
Very important meaning.
However, existing have certain limitation for horizontal air measurement of extinction coefficient technology, its measured value is inaccurate,
There is no the value of practical application.Because in the prior art, laser radar system to be used for the process of horizontal air gasoloid
In, generally first assume that air is uniformly distributed, and then obtains a fixed extinction coefficient value using Slope Method inverting.But,
Among actual conditions, the equally distributed hypothesis of atmospheric level is simultaneously invalid.Especially on ocean, because special weather conditions are led
The aggregation of the condensation vapor on ocean in lower atmosphere layer is caused to produce sea fog.This sea fog thickness generally arrives thousands of rice at hundreds of meters
.Laser radar is usually kilometers to the distance range of aerosol detection, then to there is sea fog in the case of assume big
Gas is uniformly distributed, it is clear that can not obtain accurate Aerosol Extinction value.
Accordingly, it would be desirable to existing apparatus or method are improved, it is big so that the non-homogeneous level in sea level can be accurately measured
Gas Aerosol Extinction.
The content of the invention
For the defect and Improvement requirement of prior art, the present invention provides a kind of measurement non-homogeneous horizontal air gas in sea level
The device of colloidal sol extinction coefficient, by ingenious setting optics, is improved to existing device, and device of the invention can use
In Measuring Oceanic lower atmosphere layer or the extinction coefficient profile for air on seaborne horizontal direction.
To achieve the above object, the non-homogeneous horizontal air Aerosol Extinction in sea level is measured the invention provides one kind
Device, it is characterised in that it includes laser, laser power supply, astronomical telescope of turning back, condenser lens, optical filter, gate
Photomultiplier, spectroscope, PIN photodiode, controllable signal amplification module, Pico digital oscilloscopes and processor, wherein,
The laser power supply is electrically connected with laser, for power and be used for laser set setting parameter with
Make laser 1 it is anticipated that launching laser beam,
Spectroscope is provided with laser emitting laser direction, is mutually hung down for the laser of laser emitting is divided into
Straight the first light beam and the second light beam, the sea level that first light beam is used to be emitted directly toward extinction coefficient profile to be measured is non-
In even horizontal air, speculum is provided with the exit direction of second light beam, the speculum is used for the second light beam is anti-
It is incident upon in PIN photodiode, spectroscopical minute surface and laser emitting laser angle at 45 °,
First channel of the PIN photodiode and Pico digital oscilloscopes is electrically connected, the PIN photodiode
Transmitted for will be converted into the optical signal of itself after electric signal to the first channel of Pico digital oscilloscopes,
The catadioptric astronomical telescope is used to collect the back scattered echo-signal of the non-homogeneous horizontal air in sea level,
The condenser lens and filter plate are successively set at the light exit for astronomical telescope of turning back, and the condenser lens is used
Focused in by atmospheric backscatter echo-signal on filter plate, the filter plate is used to filter out veiling glare,
The gate photomultiplier is arranged on filter plate outgoing light direction, and the gate photomultiplier is used for light
Signal subsection is converted into electric signal, the first input of the output end connection controllable signal amplification module of the gate photomultiplier
End, for optical signal is changed into the electric signal transmission obtained to controllable signal amplification module, controllable signal amplification module is used for
The electric signal of acquisition is amplified,
The output end of the controllable signal amplification module connects the second channel of the Pico digital oscilloscopes, for inciting somebody to action
Electric signal transmission after amplification to Pico digital oscilloscopes,
The output end connection processor of the Pico digital oscilloscopes, the Pico digital oscilloscopes are used for the of input
First, second channel signal, which is changed into after digital information, is delivered to processor to carry out follow-up data processing,
The processor output end connects the second input and the gate photoelectricity of controllable signal amplification module simultaneously
The input of multiplier tube, the processor is additionally operable to send control signal to control during the enabling delay for gating photomultiplier
Between, it is additionally operable to adjust the enlargement ratio of controllable amplification module according to the time delay of opening the door of the photomultiplier.
Further, the condenser lens, the optical filter, the gate photomultiplier are connected into whole by connecting cylinder
Body, this is integrally attached at the light exit of the astronomical telescope of turning back,
The condenser lens and the gate photomultiplier are arranged on the two ends of connection cylinder, and the optical filter is arranged on
The middle of the connection cylinder.
Further, the entrance pupil center of the optical axis of laser and catadioptric astronomical telescope in sustained height in same level
On line.
Further, the optical axis of the optical axis of the laser and the catadioptric astronomical telescope has between in the horizontal direction
There is angle.
Further, between the optical axis of the optical axis of the laser and the catadioptric astronomical telescope there is angle to be 0.1
Between the milliradian of milliradian~10.In Practical Project, a movable cushion plate, the backing plate can be increased under astronomical telescope of turning back
The left and right deviation angle for adjusting astronomical telescope of turning back can be moved left and right.
Further, the laser is the pulse laser that launch wavelength is 532nm.
Further, wavelength is 532nm filter plate centered on the filter plate.
Further, it can be used to measure the non-homogeneous horizontal air extinction coefficient in sea level in 0.5km~6km distance ranges
Profile.
Further, the astronomical telescope of turning back is turned back astronomical telescope for Maksutov-Cassegrain's formula.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it is following by that can obtain
Beneficial effect：
By the contemplated above technical scheme of the present invention, compared with prior art, due to amplifying letter using piecewise acquisition
Number metering system, the remote echo-signal signal to noise ratio of raising can be obtained, so as to big suitable for the non-homogeneous level in sea level
The measurement of gas extinction coefficient in the horizontal direction, and measurement range is considerably increased, improve the accuracy of measurement.
Brief description of the drawings
Fig. 1 is that the apparatus structure of the measurement non-homogeneous horizontal air Aerosol Extinction in sea level in the embodiment of the present invention shows
It is intended to；
Fig. 2 is the scatter echo signal after the non-homogeneous horizontal air aerosol segmentation amplification in sea level in the present invention；
Fig. 3 is that measurement device of the embodiment of the present invention obtains specific flow chart of data processing block diagram after data；
Fig. 4 is non-homogeneous horizontal air extinction coefficient profile on the sea level of acquisition of the embodiment of the present invention.
In all of the figs, identical reference is used for representing identical element or structure, wherein：
1- laser 2- laser power supplies
3- turns back astronomical telescope 4- condenser lenses
5- optical filters 6- gates photomultiplier
7- speculum 8-PIN photodiodes
9- controllable signal amplification module 10-Pico digital oscilloscopes
11- processors
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Not constituting conflict each other can just be mutually combined.
The present invention is devised according to the characteristic of ocean lower atmosphere layer aerosol and a set of can realized in the range of 0.5km to 6km
The device of the non-homogeneous horizontal air extinction coefficient profile measurement in sea level.
Fig. 1 is that the apparatus structure of the measurement non-homogeneous horizontal air Aerosol Extinction in sea level in the embodiment of the present invention shows
It is intended to, as seen from the figure, its device mainly included has laser 1, laser power supply 2, astronomical telescope 3 of turning back (to be specifically horse
Ke Sutuofu-Cassegrain's formula is turned back astronomical telescope), condenser lens 4, optical filter 5, gate photomultiplier 6 (band gate work(
Can photomultiplier), spectroscope 7, PIN photodiode 8, controllable signal amplification module 9, Pico digital oscilloscopes 10 and place
Manage device 11.
Wherein, the annexation of all parts and effect are as follows respectively：Laser power supply 2 is electrically connected with laser 1, with
Parameter for setting to be powered and set to laser 1 makes laser 1 it is anticipated that transmitting laser beam.In the outgoing of laser 1
Spectroscope is provided with laser direction, for the laser of the outgoing of laser 1 is divided into orthogonal first light beam and second
Light beam, first light beam is emitted directly toward in the non-homogeneous horizontal air in sea level of extinction coefficient profile to be measured, is scattered,
Scattered light directive is from all directions.It is provided with speculum 7 in the exit direction of second light beam, the speculum 7 is used for the
Two light beams are reflexed in PIN photodiode 8.First channel phase of the PIN photodiode 8 and Pico digital oscilloscopes 10
Electrical connection, into PIN photodiode 8 light be converted into transmitted after electric signal to Pico digital oscilloscopes 10 first letter
Road.Catadioptric astronomical telescope 3 is used to collect the back scattered echo-signal of the non-homogeneous horizontal air in sea level.Condenser lens 4 and filter
Wave plate 5 is successively set at the light exit for astronomical telescope 3 of turning back, and condenser lens 4 is used for atmospheric backscatter echo-signal
Focus on filter plate 5, the filter plate 5 is used to filter out veiling glare.The gate photomultiplier 6 is arranged on filter plate 5 and gone out
Penetrate on light direction, be incident to from the light of filter plate outgoing on the photosurface of gate photomultiplier 6, gate photomultiplier 6 is used
Converting optical signal into electric signal in segmentation, (gate photomultiplier has gate control function.Gate the output end of photomultiplier 6
The first input end of controllable signal amplification module 9 is connected, for optical signal is changed into the electric signal transmission obtained to controllable letter
Number amplification module 9, controllable signal amplification module 9 is used to amplify the electric signal of acquisition, the output end of controllable signal amplification module 9
The second channel of the Pico digital oscilloscopes 10 is connected, for by the electric signal transmission after amplification to Pico digital oscilloscopes
10.The output end connection processor 11 of Pico digital oscilloscopes 10, the Pico digital oscilloscopes 10 are used for the first of input,
Second channel signal changes into digital information and is delivered to processor 11 to carry out follow-up data processing.The output end of processor 11
The second input of controllable signal amplification module 9 and the input of the gate photomultiplier 6, processor 11 are connected simultaneously
The control signal sent controls to gate the enlargement ratio of open the door time delay and the controllable amplification module 9 of photomultiplier 6 respectively.
In the present invention, it is 532nm pulse laser as light source transmitter unit to use launch wavelength, by by refraction-reflection type
The reception optical unit of astronomical telescope, optical filter and condenser lens composition receives atmospheric reflectance echo-signal, and by photoelectricity
Cell processing obtains electric signal, then is handled by data processing unit by electric signal is further, and it is non-that inverting obtains sea level
The extinction coefficient profile of even horizontal air.
In the present invention, the optical axis of the optical axis of laser 1 and catadioptric astronomical telescope 3 is each parallel to the sea level currently located.
There is angle between the optical axis of the optical axis of the laser 1 and the catadioptric astronomical telescope 3.The optical axis of the laser 1 and
It is between the milliradian of 0.1 milliradian~10 to have angle between the optical axis of the catadioptric astronomical telescope 3.Due to laser radar system
The transceiver module of system is not coaxial, and this can produce one and atmospheric backscatter echo-signal detection blind area is not measured, so to set
Meter can change the left and right deviation angle for astronomical telescope of turning back to reduce detection blind area.
The specific work process of apparatus of the present invention is as follows：
First, from laser 1 to the transmitting beam of laser of spacious marine atmosphere level, the pulse energy of the laser beam is
50mJ, wavelength is 532nm, in the most sensitive wavelength period of human eye.
Then, due to being provided with a spectroscope before laser beam, light beam is divided into two beams, a branch of direct incidence by spectroscope
Into the non-homogeneous horizontal air in sea level, another Shu Zezai is incided in PIN photodiode by speculum.
On the one hand, it is trigger signal to incide the light beam in PIN photodiode, and the light beam is turned by PIN photodiode
It is melted into electric signal and inputs into the first channel of Pico digital oscilloscopes.
On the other hand, due to being incident to during the laser beam of the non-homogeneous horizontal air in sea level transmits in an atmosphere
It can be scattered when encountering the particulate matter of atmospheric molecule and suspension in an atmosphere, the light of scattering along spreading out of from all directions, wherein one
Some scattered light is rear orientation light, is then collected rear orientation light by refraction-reflection type astronomical telescope, and catadioptric astronomical telescope is defeated
Optical signals by condenser lens focus to centre wavelength be 532nm filter plate, then by filter plate filter off background stray light with
Reduce the influence even eliminated to flashlight.The emergent light projected from filter plate is collected by gate photomultiplier.
Then, processor sends the enabling time delay of control signal control gate photomultiplier, and piecewise receives light
Signal, gate photomultiplier has been at holding state, when receiving optical signal, gate photomultiplier work, will
Optical signal changes into electric signal and is delivered to controllable signal amplification module.
Followed by the control signal that controllable signal amplification module is sent by processor controls to pass different split times
The electric signal entered does the enhanced processing of different enlargement ratios, by second of the electric signal input value Pico digital oscilloscopes after amplification
Channel.The voltage signal of two channels is changed into digital information by Pico digital oscilloscopes respectively by analog converter, is laid equal stress on
Structure waveform shows the voltage-vs-time relation curve of two passages on a processor.Wherein, the signal of the first channel is remembered for oscillograph
The trigger signal of data is recorded, the signal of second channel is the echo-signal of the non-homogeneous horizontal air back scattering in sea level, and it is
Echo voltage and the relation curve of time.
Finally, by processor stored record voltage-vs-time relation data and Matlab or other mapping softwares pair are passed through
The data inverting that is for further processing obtains Horizontal extinction coefficient profile.
Relative to the system of existing measurement atmospheric horizontal visibility, theing improvement is that for the present apparatus is employed with door
The photomultiplier of control function carrys out piecewise acquisition atmospheric backscatter echo-signal as detector, and gate letter is sent by computer
Number control gate photomultiplier opens the door time delay to reach at detector piecewise acquisition different distance scattering heating echo letter
Number purpose.The signal of piecewise acquisition is delivered in controllable amplification module, believed by the control of processor (or computer)
Number control controllable signal amplification module does the enhanced processing of different multiplying to different sections of signal.
Specifically, scatter echo signal enlargement ratio closely is set to smaller value, to prevent out, existing signal saturation is cut
Push up phenomenon；Remote scatter echo signal enlargement ratio is set to higher value, preferably to extract the echo of distant location
Signal, increases the signal to noise ratio of its noise such as with system thermal noise.The signal being segmented after amplification is inputted into Pico digital oscilloscopes again,
Digital information is changed into by oscillograph and display data is stored.
The scatter echo signal obtained after segmentation amplification as shown in Figure 2, is controlled by computer or processor
It is for example six times that photomultiplier, which opens the door and detected, and time delay of opening the door every time is controlled respectively, is segmented record scatter echo signal.With
This simultaneously, computer or processor control amplification module carry out the amplification of different multiplying to six segment signals, that is, see acquisition as attached
Segmentation amplification scatter echo signal graph shown in Fig. 2.
In Practical Project practice, then further inversion procedure is done to the echo-signal, Slope Method is replaced by fernald methods
Extinction coefficient profile in inverting horizontal direction.Fernald methods are to send out laser beam atmospheric molecule and suspended particulate substance
The influence of raw scattering phenomenon is distinguished, and assumes that particulate matter delustring Back-scattering ratio is constant, and Mie scatterings are solved on this basis
Laser radar equation is so as to obtain extinction coefficient.
Fig. 3 is that measurement device of the embodiment of the present invention obtains specific flow chart of data processing block diagram after data, as seen from the figure, first
First, whole piece curve is normalized as parameter for the different enlargement ratio values using for example six segmentations；Then to signal
Carry out noise reduction process to reduce influence of the noise to inversion result, improve to-noise ratio, in Practical Project practice, can for example use
Wavelet Algorithm, according to test of many times, chooses ' db4 ' as the wavelet basis of wavelet transformation and carries out soft-threshold processing；Take again most
Several kilometers of data, Aerosol Extinction boundary value is accurately estimated by bi-component fitting process afterwards；Using the extinction coefficient as
The initial data of fernald algorithms asks for corresponding extinction coefficient at different distance one by one to closely recurrence, and makes distance
It is to obtain the atmospheric extinction coefficient profile in horizontal direction with extinction coefficient relation curve.
Fig. 4 is non-homogeneous horizontal air extinction coefficient profile on the sea level of acquisition of the embodiment of the present invention, and accompanying drawing 4 is this hair
Bright be installed on carries out marine atmosphere extinction coefficient observation experiment on July 15,29 days to 2016 June in 2016 in yellow Bohai Offshore
When the sea level that acquires on non-homogeneous horizontal air extinction coefficient profile.It can be seen that air disappears in the horizontal direction by the figure
Backscatter extinction logarithmic ratio has significant change, and this is consistent with actual conditions.
The present invention device can by gate photomultiplier (piecewise acquisition echo-signal, and to it is different segmentation make not
With multiplying power enhanced processing, so as to measurement long distance from the non-homogeneous horizontal air Aerosol Extinction in sea level.
Present invention seek to address that original scheme medium and long distance backscattering echo Signal-to-Noise is low, measurement of extinction coefficient away from
From it is small the problem of.
Generally speaking, apparatus of the present invention can accurately obtain the distribution situation of extinction coefficient, energy when this is navigated by water for distinguishing
The change of degree of opinion provides the data-guiding for the reference value having very much.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc., it all should include
Within protection scope of the present invention.
Claims (9)
1. a kind of device of the non-homogeneous horizontal air Aerosol Extinction in measurement sea level, it is characterised in that it includes laser
Device (1), laser power supply (2), astronomical telescope of turning back (3), condenser lens (4), optical filter (5), gate photomultiplier
(6), spectroscope (7), PIN photodiode (8), controllable signal amplification module (9), Pico digital oscilloscopes (10) and processor
(11), wherein,
The laser power supply (2) electrically connects with laser (1), for what is powered and set for setting to laser (1)
Parameter so that laser (1) it is anticipated that transmitting laser beam,
Spectroscope is provided with laser (1) shoot laser direction, for the laser of laser (1) outgoing is divided into mutually
Vertical the first light beam and the second light beam, the sea level that first light beam is used to be emitted directly toward extinction coefficient profile to be measured is non-
In even level's air, speculum (7) is provided with the exit direction of second light beam, the speculum (7) is used for the
Two light beams are reflexed in PIN photodiode (8),
Spectroscopical minute surface and laser emitting laser angle at 45 °,
The PIN photodiode (8) and the first channel of Pico digital oscilloscopes (10) are electrically connected, the PIN photoelectricity two
Pole pipe (8), which is used to be converted into the optical signal of itself, to be transmitted after electric signal to the first letter of Pico digital oscilloscopes (10)
Road,
The catadioptric astronomical telescope (3) is used to collect the back scattered echo-signal of the non-homogeneous horizontal air in sea level,
The condenser lens (4) and filter plate (5) are successively set at the light exit of astronomical telescope of turning back (3), the focusing
Lens (4) are used to atmospheric backscatter echo-signal focusing on filter plate (5), and the filter plate (5) is spuious for filtering out
Light,
The gate photomultiplier (6) is arranged on filter plate (5) outgoing light direction, and the gate photomultiplier (6) is used
In optical signal segmentation is converted into electric signal, the output end of the gate photomultiplier (6) connects controllable signal amplification module
(9) first input end, it is controllable for optical signal is changed into the electric signal transmission obtained to controllable signal amplification module (9)
Signal amplification module (9) is used to amplify the electric signal of acquisition,
The output end of the controllable signal amplification module (9) connects the second channel of the Pico digital oscilloscopes (10), with
Electric signal transmission after by amplification to Pico digital oscilloscopes (10),
The output end connection processor (11) of the Pico digital oscilloscopes (10), the Pico digital oscilloscopes (10) are used for will
First, second channel signal of input, which is changed into after digital information, is delivered to processor (11) to carry out follow-up data processing,
Processor (11) output end connects the second input and the gate light of controllable signal amplification module (9) simultaneously
The input of electric multiplier tube (6), the processor (11) is additionally operable to send control signal to control to gate photomultiplier (6)
Open the door time delay, be additionally operable to adjust putting for controllable amplification module (9) according to the enabling time delay of the photomultiplier (6)
Big multiplying power.
2. measuring the device of the non-homogeneous horizontal air Aerosol Extinction in sea level as claimed in claim 1, its feature exists
In the condenser lens (4), the optical filter (5), the gate photomultiplier (6) connect integral by connecting cylinder, should
At the light exit for being integrally attached to astronomical telescope (3) of turning back,
The condenser lens 4 and the gate photomultiplier (6) are arranged on the two ends of connection cylinder, and the optical filter is arranged on
The middle of the connection cylinder.
3. measuring the device of the non-homogeneous horizontal air Aerosol Extinction in sea level as claimed in claim 1, its feature exists
In the entrance pupil center of the height of laser optical axis and astronomical telescope of turning back is in the same horizontal line.
4. measuring the device of the non-homogeneous horizontal air Aerosol Extinction in sea level as claimed in claim 1, its feature exists
In with angle between the optical axis of the laser (1) and the optical axis of the catadioptric astronomical telescope (3).
5. measuring the device of the non-homogeneous horizontal air Aerosol Extinction in sea level as claimed in claim 4, its feature exists
In, between the optical axis of the laser (1) and the optical axis of the catadioptric astronomical telescope (3) have angle be 0.1 milliradian~
Between 10 milliradians.
6. measuring the device of the non-homogeneous horizontal air Aerosol Extinction in sea level as claimed in claim 1, its feature exists
In the laser is the pulse laser that launch wavelength is 532nm.
7. measuring the device of the non-homogeneous horizontal air Aerosol Extinction in sea level as claimed in claim 1, its feature exists
In wavelength is 532nm filter plate centered on the filter plate.
8. measuring the device of the non-homogeneous horizontal air Aerosol Extinction in sea level as claimed in claim 1, its feature exists
In it can be used to measure the non-homogeneous horizontal air extinction coefficient profile in sea level in 0.5km~6km distance ranges.
9. measuring the device of the non-homogeneous horizontal air Aerosol Extinction in sea level as claimed in claim 1, its feature exists
It is that Maksutov-Cassegrain's formula is turned back astronomical telescope in, the astronomical telescope of turning back (3).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110109149A (en) * | 2019-05-08 | 2019-08-09 | 南京信息工程大学 | A kind of laser radar low layer extinction coefficient profile bearing calibration |
| CN111443157A (en) * | 2020-03-16 | 2020-07-24 | 京威汽车设备有限公司 | Heater combustion test system and method |
| CN113640222A (en) * | 2021-07-27 | 2021-11-12 | 南京理工大学 | Handheld laser scattering type aerosol attenuation characteristic measuring instrument with double working modes |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1542461A (en) * | 2003-11-05 | 2004-11-03 | 中国科学院安徽光学精密机械研究所 | Portable meter scattering laser radar concurrently used for day and night and detection method thereof |
| CN1657972A (en) * | 2005-01-20 | 2005-08-24 | 中国科学院安徽光学精密机械研究所 | Detection method and laser radar of Raman-Mie scattering laser atmospheric signal |
| JP2010181205A (en) * | 2009-02-03 | 2010-08-19 | Shimadzu Corp | Spectrofluorophotometer |
| KR20120020015A (en) * | 2010-08-27 | 2012-03-07 | 광주과학기술원 | Time-resolved ultraviolet rays near-field scanning optical microscope and method of measuring using thereof |
| CN106772409A (en) * | 2017-01-12 | 2017-05-31 | 中国人民解放军92232部队 | A kind of combined measuring device |
| 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 |
-
2017
- 2017-06-14 CN CN201710447950.2A patent/CN107272023B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1542461A (en) * | 2003-11-05 | 2004-11-03 | 中国科学院安徽光学精密机械研究所 | Portable meter scattering laser radar concurrently used for day and night and detection method thereof |
| CN1657972A (en) * | 2005-01-20 | 2005-08-24 | 中国科学院安徽光学精密机械研究所 | Detection method and laser radar of Raman-Mie scattering laser atmospheric signal |
| JP2010181205A (en) * | 2009-02-03 | 2010-08-19 | Shimadzu Corp | Spectrofluorophotometer |
| KR20120020015A (en) * | 2010-08-27 | 2012-03-07 | 광주과학기술원 | Time-resolved ultraviolet rays near-field scanning optical microscope and method of measuring using thereof |
| CN106772409A (en) * | 2017-01-12 | 2017-05-31 | 中国人民解放军92232部队 | A kind of combined measuring device |
| 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 |
Non-Patent Citations (2)
| Title |
|---|
| HUFFMAN H D等: ""Comparison of the light absorption coefficient and carbon measures for remote aerosol:An independent analysis of data from the improve network I and II :Author"s reply"", 《ATMOSPHERIC ENVIRONMENT》 * |
| 贺应红: ""Mie散射激光雷达实验系统设计与大气消光系数反演方法研究"", 《中国优秀博硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110109149A (en) * | 2019-05-08 | 2019-08-09 | 南京信息工程大学 | A kind of laser radar low layer extinction coefficient profile bearing calibration |
| CN110109149B (en) * | 2019-05-08 | 2022-11-25 | 南京信息工程大学 | Laser radar low-layer extinction coefficient profile correction method |
| CN111443157A (en) * | 2020-03-16 | 2020-07-24 | 京威汽车设备有限公司 | Heater combustion test system and method |
| CN111443157B (en) * | 2020-03-16 | 2022-10-04 | 京威汽车设备有限公司 | Heater combustion test system and method |
| CN113640222A (en) * | 2021-07-27 | 2021-11-12 | 南京理工大学 | Handheld laser scattering type aerosol attenuation characteristic measuring instrument with double working modes |
| CN113640222B (en) * | 2021-07-27 | 2024-06-07 | 南京理工大学 | Hand-held double-working-mode laser scattering type aerosol attenuation characteristic measuring instrument |
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