CN206638826U - A kind of more visual field Airborne Lidar examining systems for the measurement of liquid water cloud - Google Patents
A kind of more visual field Airborne Lidar examining systems for the measurement of liquid water cloud Download PDFInfo
- Publication number
- CN206638826U CN206638826U CN201720348231.0U CN201720348231U CN206638826U CN 206638826 U CN206638826 U CN 206638826U CN 201720348231 U CN201720348231 U CN 201720348231U CN 206638826 U CN206638826 U CN 206638826U
- Authority
- CN
- China
- Prior art keywords
- laser
- photodetector
- cloud
- signal acquisition
- visual field
- 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.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Landscapes
- Optical Radar Systems And Details Thereof (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a kind of more visual field Airborne Lidar examining systems for the measurement of liquid water cloud, including laser radar transmitter module, laser radar receiving module and main control module；Wherein, laser radar transmitter module includes laser, beam expanding lens, polarizer, half-wave plate；Laser radar receiving module includes telescope, convex lens, electronic aperture, polarization beam apparatus, the first to the second photodetector, signal acquisition module；Laser, electronic aperture, signal acquisition module are connected with main control module respectively, and the first photodetector, the second photodetector are connected with signal acquisition module respectively.The laser emission of 532nm wavelength is produced using laser, passes through two optics receiving channels：Parallel detection channels, vertical sounding passage, separately detect parallel, orthogonal polarized light, and Depolarization Ratio is calculated by two detection channels, utilize the slope of Depolarization Ratio and the liquid-water content and Effective radius of polarization saturation computation cloud particle.
Description
Technical field
It the utility model is related to a kind of more visual field Airborne Lidar examining systems for the measurement of liquid water cloud, and in particular to one
More visual field Airborne Lidar examining systems of cloud particle microphysical property, belong to cloud particle detection technology field in kind measurement cloud.
Background technology
The composition and characteristic of cloud particle, it is the important finger for speculating future weather development trend when analyzing weather conditions
Mark, is monitored in real time to cloud particle, is more conducive to analyze the situation of air motion, the result of observation is to short-term weather forecast
There is profound meaning.Research to longer term climatic, cloud have radiation effects, influence the climate change of the whole earth, cloud is to temperature
Influence even to have surmounted three times that carbon dioxide influences temperature.Pattern is studied, the physical property of cloud is also a weight
The research direction wanted, height, cloud amount, the thickness of cloud and the cloud particle sub-feature of cloud, to weather forecast and inspection and weather mould
Establishing for type is of crucial importance.
In the detection of several physical quantitys of cloud, the microphysical property for detecting cloud particle is the task of top priority, in cloud particle
Water particle physical aspect, the content of water, the size of water particle.The phase of cloud reclaimed water is a very important parameter index.Such as
Fruit detects the water content in cloud, it is assumed that the particle diameter distribution of water particle meets a certain particular kind of relationship in cloud, then the particle diameter in cloud
It can be derived between Spectral structure and water content with mathematical formulae, so, it is particularly significant to study water content in cloud.
So far, the method for various observation clouds is all used.Satellite remote sensing has the characteristics of its is unique, to complete on satellite orbit
The distribution of ball cloud is observed, in terms of cloud physics feature measurement, it can only go on the whole distinguish water phase be aqueous phase also
It is ice phase, but the water particle in cloud can not be made a distinction from microcosmic, and observation occurs when there is multiple-layer overlapped cloud
The problem of aspect, in observation of low clouds etc., there is also problem.Airborne cloud particle measuring instrument is that currently used people influences day
The instrument of gas, the various parameters of the cloud particle on aircraft flight path can be measured, the particle diameter of cloud particle can be measured
And the water content in cloud, airborne cloud particle detector can be with direct measurement cloud particles, as a result more accurately, but expense is relative
Other observed patterns are higher, and observation frequency is restricted.Common weather radar is due to the limitation of its wavelength, to the Microphysical of cloud
Property detection ability is also limited, and with the development of millimeter-wave technology, millimeter wave becomes the most frequently used means of observation cloud, compared to
Common weather radar, the wavelength of millimetre-wave radar is shorter, can preferably measure the phase of cloud, then passes through scanning device, millimeter
Ripple radar can detect the relevant parameter of the cloud in more than ten kilometers centered on radar, and laser radar more has compared to millimetre-wave radar
Its unique advantage：In terms of spatial resolution, the minimum value of its range resolution ratio is 1.5m, than the spatial discrimination of millimetre-wave radar
Ability is eager to excel；For wavelength, the wavelength of millimetre-wave radar one time is 3mm or 8mm, and for most of clouds, the wavelength is remote
More than the size of cloud particle, therefore its detectivity is somewhat limited certainly, especially to small particles in thin cloud
Detectivity, and the wavelength of laser radar is generally less than 1 micron, it is stronger to the detectivity of various particles in cloud, and can
Monitor the thin cloud of small particles that millimeter wave can not monitor.Technical elements, the cost of millimetre-wave radar and the expense safeguarded compare
Costliness, compared to millimetre-wave radar, every technology of laser radar is ripe, and system is more succinct, the expense of operation maintenance
It is relatively lower, in popularization afterwards advantageously.But traditional laser radar is only capable of measuring the laser under the single angle of visual field
Radar return, according to Mie scattering theories, the laser radar echo of the single angle of visual field can not reflect the yardstick spectrum information of cloud particle,
Therefore, more visual field laser radars have great importance for the Microphysical for studying cloud.
Utility model content
Technical problem to be solved in the utility model is：A kind of more visual field laser thunders for the measurement of liquid water cloud are provided
Up to detection system, using the Multiple Scattering effect of cloud particle, by changing the size of the angle of visual field, the cloud under the different angles of visual field is obtained
The Depolarization Ratio of particle, and then obtain the radius and liquid-water content of cloud particle.
The utility model uses following technical scheme to solve above-mentioned technical problem：
It is a kind of for liquid water cloud measurement more visual field Airborne Lidar examining systems, including laser radar transmitter module, swash
Optical radar receiving module and main control module；Wherein, laser radar transmitter module includes laser, beam expanding lens, polarizer, half-wave
Piece；Laser radar receiving module includes telescope, convex lens, electronic aperture, polarization beam apparatus, the first to the second photodetection
Device, signal acquisition module；The laser, electronic aperture, signal acquisition module are connected with main control module respectively, and the first photoelectricity is visited
Survey device, the second photodetector is connected with signal acquisition module respectively；Laser transmitting laser signal successively through beam expanding lens, partially
Shake after piece, half-wave plate vertically into air, the rear orientation light of cloud particle, rear orientation light warp in telescope vertical reception air
Convex lens become directional light, and directional light enters polarization beam apparatus through electronic aperture, and directional light is divided into level by polarization beam apparatus
Polarised light and orthogonal polarized light, pass to the first photodetector, the second photodetector respectively, and the first photodetector is by level
Polarised light is converted into electric signal and transmitted to signal acquisition module, and orthogonal polarized light is converted into electric signal by the second photodetector
And transmit to signal acquisition module, signal acquisition module gathers two electric signals and transmits the result to main control module respectively.
As a kind of preferred scheme of the present utility model, the laser uses YAG semiconductor lasers.
As a kind of preferred scheme of the present utility model, the telescope uses 200mm Cassegrain telescope, and it is burnt
Away from for 2032mm.
As a kind of preferred scheme of the present utility model, first photodetector, the second photodetector are
The photomultiplier of H10682-110 models.
As a kind of preferred scheme of the present utility model, the signal acquisition module uses the photon counting of P7882 models
Card.
The utility model compared with prior art, has following technique effect using above technical scheme：
1st, the more visual field Airborne Lidar examining systems of the utility model, using the Multiple Scattering effect of cloud particle, using can be with
By the electronic aperture of step-length adjustment aperture size, the angle of visual field for the laser that control laser radar reception system receives, to obtain
Horizontal polarization optical signal and vertical polarization optical signal under different visual fields, so as to be finally inversed by cloud liquid water content and cloud particle half
Footpath.
2nd, the more visual field Airborne Lidar examining systems of the utility model, remote sensing is carried out to cloud layer characteristic using channel of polarization information
Inverting, system is succinct, and the expense of operation maintenance is relatively low, has good advantage in popularization afterwards.
Brief description of the drawings
Fig. 1 is a kind of overall architecture of more visual field Airborne Lidar examining systems for the measurement of liquid water cloud of the utility model
Figure.
Fig. 2 is the typical legend of linear Depolarization Ratio.
Fig. 3 is to utilize the linear Depolarization Ratio legend of the utility model detection system actual measurement gained.
Fig. 4 is the relation of liquid-water content and linear Depolarization Ratio.
Fig. 5 is the relation of cloud particle effective grain size and linear Depolarization Ratio.
Wherein, 1- lasers, 2- beam expanding lens, 3- polarizers, 4- half-wave plates, the speculums of 5- first, 6- telescopes, 7- second
Speculum, 8- convex lens, the electronic apertures of 9-, 10- polarization beam apparatus, the photodetectors of 11- first, the photodetectors of 12- second,
13- signal acquisition modules.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein
Same or similar label represents same or similar element or the element with same or like function from beginning to end.Lead to below
It is exemplary to cross the embodiment being described with reference to the drawings, and is only used for explaining the utility model, and can not be construed to this practicality
New limitation.
The utility model utilizes the Multiple Scattering effect of cloud, using YAG crystal lasers as laser emitting source, produces
532nm laser emission, set laser work mode and its system initially to set by main control module (being not drawn into figure), utilize
Telescope receives the backscatter signal of cloud, and backscatter signal becomes directional light through lens.Totally 2 detections of optics receiving portion
Passage, one of them is used for detecting parallel polarization signal, and another is used for detecting vertical polarization signal, and two path signal uses light
Sub-count card is counted, and the liquid-water content and efficient radius of cloud particle of water cloud are calculated according to Monte carlo algorithm.
The detection system is made up of laser radar transmitter module, laser radar receiving module and main control module.Wherein, respectively
Individual module includes separate unit, overall to be controlled by main control module, ensures the stability of a system.Wherein, laser emission wavelength
For 532nm.Wherein, laser radar receiving module is using follow-up light paths such as Cassegrain telescope and narrow band pass filters.Wherein,
Data analysis is shown carries out analysis completion by the data analysis system on main control module.
The premise detected using the system is when laser works are in good condition, is imitated using the Multiple Scattering of water cloud
Should, parallel polarized light and orthogonal polarized light are separately detected using narrow band pass filter, is finally inversed by by Monte Carlo principle in water cloud
Liquid-water content and efficient radius of cloud particle.Comprise the concrete steps that：
Opened in initialization such as the working method of main control module setting laser, System production time, system initial value, inverting initial values
Dynamic information.Laser radar transmitter module control YAG crystal lasers produce the laser emission of 532nm wavelength.Using receiving and dispatching different axle
Cassegrain telescope receive echo under the different angles of visual field.Echo-signal becomes directional light by convex lens, is sent to respectively
Two detection channels, one of level detection passage are used to detect parallel polarized light, and another vertical sounding passage is used to visit
Survey orthogonal polarized light.By the echo that two channel receptions arrive by photodetector, electric signal is converted optical signal into.Signal is adopted
Collecting system carries out photon counting using P7882 photon countings card to two passages.Analyzed by main control module, in main control module
The photon signal collected is recorded, and is finally inversed by the effective radius of liquid-water content and cloud particle in water cloud, and is shown.Together
When, initial data and analysis result carry out arrangement preservation by main control module.
As shown in figure 1, more visual field laser of liquid-water content and efficient radius of cloud particle in the utility model detection water cloud
Radar-probing system, the system include：
Laser radar transmitter module：The module produces stable 532nm laser emissions by laser 1, and laser passes through expansion
Its angle of divergence is compressed after beam mirror 2 to 0.2mrad, it is become linearly polarized light by linear polarizer 3, half-wave plate 4 changes laser
Polarization state, be transmitted into through 45 ° of first speculum 5 in air.
Laser radar receiving module：Using 200mm Cassegrain telescope 6, its focal length f=2032mm, the telescope
For receiving the back scattering energy from cloud and aerosol.Back scattering energy enters convex lens 8 by the second speculum 7,
Rear orientation light is changed into directional light by convex lens 8.The visual field of laser radar is automatically adjusted by the electronic aperture 9 of master control module controls
Angle, and make the change of aperture synchronous with the acquisition system of photon counting card, receive back scattering of the cloud particle under different visual fields
Photon.The signal received is divided into by horizontal channel and vertical channel by polarization beam apparatus 10.Using two photodetections
Device 11,12 is that H10682-110 photomultipliers are handled optical signal, optical signal is changed into electric signal, and signal is sent
To signal acquisition module 13.The signal that signal acquisition module 13 is collected using P7882 photon counting cards, and to collection
Signal is handled.
Main control module：For setting the working method of electronic aperture, including the rotation step pitch of aperture and direction, system work
Before, main control module sends setting command to slave computer；Data analysis is an integration module of main control module, and the module will adopt
The data collected are analyzed in real time, and according to the principle of Multiple Scattering, the liquid-water content of water cloud is calculated and displayed in real time
And efficient radius of cloud particle, main control module also complete the real-time preservation processing to gathered data and analysis result.
A kind of more visual field laser radar detection methods for measuring cloud particle sub-feature, comprise the following steps：
1) utilize laser radar transmitter module, control laser stabilization produces 532nm laser, successively by beam expanding lens,
Polarizer, half-wave plate are transmitted into air.
2) laser radar receiving module is utilized, receives the back scattering energy from cloud and aerosol.
3) angle of visual field of laser radar is automatically adjusted using main control module, cloud particle is received in different visual fields using telescope
Under back scattering photon.
4) light of receiving light path is divided into parallel polarized light and orthogonal polarized light using polarization beam apparatus, passes to two respectively
Photodetector detects.
5) optical signal of reception is changed into electric signal by photomultiplier using photodetector, and is transferred to signal
Acquisition module.
6) electric signal of horizontal channel and vertical channel is carried out photon counting using signal acquisition module, to the letter of collection
Number it is handled as follows：
The 1st, photon counting card working method and data acquisition time are set；
The 2nd, working method, step pitch and the step number of electronic aperture are set；
3rd, control software is set to make rotation and the data collection synchronous of aperture；
4th, the number of photons of two passages is gathered under the different angles of visual field, and calculates Depolarization Ratio；
5th, Microphysical (including liquid-water content and the cloud particle half of cloud are calculated according to Depolarization Ratio and Monte carlo algorithm
Footpath) and recorded.
7) signal of collection is analyzed in real time using main control module, and according to situation about being scattered under different visual fields, it is real
When calculate cloud particle radius and liquid-water content, and data are preserved in real time.
As shown in Figures 2 and 3, the typical legend of respectively linear Depolarization Ratio and the detection system actual measurement of utilization the utility model
The linear Depolarization Ratio legend of gained.The ratio that passage 1, passage 2 export is Depolarization Ratio, and it includes two separate physics ginsengs
Amount：Depolarization Ratio slope and polarization saturation degree (as shown in Figure 2)；By Monte Carlo, the slope of Depolarization Ratio only contains with liquid
Water is unrelated about (as shown in figure 4, upper right corner data represent every cubic metre of liquid-water content), and efficient radius of cloud particle
(as shown in figure 5, upper right corner data represent cloud particle radius), it is hereby achieved that liquid-water content, depolarization saturation degree and liquid
Water content and cloud particle radius are relevant, it is hereby achieved that the size of cloud particle radius.
Above example is only to illustrate technological thought of the present utility model, it is impossible to limits protection model of the present utility model with this
Enclose, it is every according to the utility model proposes technological thought, any change done on the basis of technical scheme, each fall within this reality
Within the scope of novel protected.
Claims (5)
1. a kind of more visual field Airborne Lidar examining systems for the measurement of liquid water cloud, it is characterised in that sent out including laser radar
Penetrate module, laser radar receiving module and main control module；Wherein, laser radar transmitter module include laser, beam expanding lens, partially
Shake piece, half-wave plate；Laser radar receiving module includes telescope, convex lens, electronic aperture, polarization beam apparatus, the first to the second
Photodetector, signal acquisition module；The laser, electronic aperture, signal acquisition module are connected with main control module respectively, the
One photodetector, the second photodetector are connected with signal acquisition module respectively；The laser signal of laser transmitting passes through successively
Vertically into air after beam expanding lens, polarizer, half-wave plate, the rear orientation light of cloud particle in telescope vertical reception air, after
Become directional light to scattering light planoconvex lens, directional light enters polarization beam apparatus through electronic aperture, and polarization beam apparatus will be parallel
Light is divided into horizontal polarization light and orthogonal polarized light, passes to the first photodetector, the second photodetector respectively, and the first photoelectricity is visited
Survey device horizontal polarization light is converted into electric signal and transmitted to signal acquisition module, the second photodetector turns orthogonal polarized light
Turn to electric signal and transmit to signal acquisition module, signal acquisition module gathers two electric signals and transmits the result to master respectively
Control module.
2. it is used for more visual field Airborne Lidar examining systems of liquid water cloud measurement according to claim 1, it is characterised in that institute
State laser and use YAG semiconductor lasers.
3. it is used for more visual field Airborne Lidar examining systems of liquid water cloud measurement according to claim 1, it is characterised in that institute
The Cassegrain telescope that telescope uses 200mm is stated, its focal length is 2032mm.
4. it is used for more visual field Airborne Lidar examining systems of liquid water cloud measurement according to claim 1, it is characterised in that institute
State the first photodetector, the second photodetector be H10682-110 models photomultiplier.
5. it is used for more visual field Airborne Lidar examining systems of liquid water cloud measurement according to claim 1, it is characterised in that institute
State the photon counting card that signal acquisition module uses P7882 models.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720348231.0U CN206638826U (en) | 2017-04-05 | 2017-04-05 | A kind of more visual field Airborne Lidar examining systems for the measurement of liquid water cloud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720348231.0U CN206638826U (en) | 2017-04-05 | 2017-04-05 | A kind of more visual field Airborne Lidar examining systems for the measurement of liquid water cloud |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206638826U true CN206638826U (en) | 2017-11-14 |
Family
ID=60247354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720348231.0U Expired - Fee Related CN206638826U (en) | 2017-04-05 | 2017-04-05 | A kind of more visual field Airborne Lidar examining systems for the measurement of liquid water cloud |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206638826U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064957A (en) * | 2017-04-05 | 2017-08-18 | 南京信息工程大学 | A kind of many visual field laser radar detection system and methods measured for liquid water cloud |
| CN109061668A (en) * | 2018-06-25 | 2018-12-21 | 南京信息工程大学 | A kind of more visual field polarization lidar detection systems and the method for detecting ice cloud |
| CN112505726A (en) * | 2020-12-07 | 2021-03-16 | 北京遥测技术研究所 | Airborne multi-channel aerosol-cloud particle laser radar system |
| CN113433564A (en) * | 2020-03-06 | 2021-09-24 | 上海禾赛科技有限公司 | Laser radar and method for measuring distance by using laser radar |
| CN114994794A (en) * | 2022-06-24 | 2022-09-02 | 昆明学院 | Cloud particle phase state growth method for cloud cluster non-detection data area |
| CN115684025A (en) * | 2022-09-23 | 2023-02-03 | 长春理工大学 | Cloud state polarization detection device and detection method |
-
2017
- 2017-04-05 CN CN201720348231.0U patent/CN206638826U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064957A (en) * | 2017-04-05 | 2017-08-18 | 南京信息工程大学 | A kind of many visual field laser radar detection system and methods measured for liquid water cloud |
| CN107064957B (en) * | 2017-04-05 | 2023-08-15 | 南京信息工程大学 | Multi-view-field laser radar detection system and method for liquid water cloud measurement |
| CN109061668A (en) * | 2018-06-25 | 2018-12-21 | 南京信息工程大学 | A kind of more visual field polarization lidar detection systems and the method for detecting ice cloud |
| CN109061668B (en) * | 2018-06-25 | 2023-02-10 | 南京信息工程大学 | Multi-field-of-view polarized laser radar detection system and method for detecting ice cloud |
| CN113433564A (en) * | 2020-03-06 | 2021-09-24 | 上海禾赛科技有限公司 | Laser radar and method for measuring distance by using laser radar |
| CN113433564B (en) * | 2020-03-06 | 2023-05-23 | 上海禾赛科技有限公司 | Laser radar and method for ranging using laser radar |
| CN112505726A (en) * | 2020-12-07 | 2021-03-16 | 北京遥测技术研究所 | Airborne multi-channel aerosol-cloud particle laser radar system |
| CN114994794A (en) * | 2022-06-24 | 2022-09-02 | 昆明学院 | Cloud particle phase state growth method for cloud cluster non-detection data area |
| CN114994794B (en) * | 2022-06-24 | 2023-05-09 | 昆明学院 | Cloud particle phase growth method for cloud cluster non-detection data area |
| CN115684025A (en) * | 2022-09-23 | 2023-02-03 | 长春理工大学 | Cloud state polarization detection device and detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206638826U (en) | A kind of more visual field Airborne Lidar examining systems for the measurement of liquid water cloud | |
| CN107064957A (en) | A kind of many visual field laser radar detection system and methods measured for liquid water cloud | |
| CN101004453B (en) | Method for mensurating parameter of weather and atmospheric environment | |
| Fuertes et al. | 3D turbulence measurements using three synchronous wind lidars: Validation against sonic anemometry | |
| Kotthaus et al. | Atmospheric boundary layer height from ground-based remote sensing: a review of capabilities and limitations | |
| Baumgardner et al. | The Cloud Particle Spectrometer with Polarization Detection (CPSPD): A next generation open-path cloud probe for distinguishing liquid cloud droplets from ice crystals | |
| CN109061668A (en) | A kind of more visual field polarization lidar detection systems and the method for detecting ice cloud | |
| CN102879835B (en) | A kind of measuring method of laser precipitation weather phenomenon and laser precipitation weather phenomenon instrument | |
| Froidevaux et al. | A Raman lidar to measure water vapor in the atmospheric boundary layer | |
| Steinvall et al. | Experimental evaluation of an airborne depth-sounding lidar | |
| Yueh et al. | QuikSCAT geophysical model function for tropical cyclones and application to Hurricane Floyd | |
| Testik et al. | High-speed optical disdrometer for rainfall microphysical observations | |
| CN110058210A (en) | A kind of multi-wavelength laser radar based on wavelength-division multiplex | |
| CN103115872B (en) | Method for obtaining multi-wavelength atmospheric extinction coefficient altitude distribution data through retrieval | |
| CN110161280A (en) | Mixing detection Doppler lidar wind velocity measurement system and its measurement method | |
| Yang et al. | Liquid–ice mass partition in tropical maritime convective clouds | |
| Linné et al. | Water vapour flux profiles in the convective boundary layer | |
| Hsu et al. | A study on factors affecting airborne LiDAR penetration | |
| Li et al. | Achieve accurate recognition of 3D point cloud images by studying the scattering characteristics of typical targets | |
| CN112859102A (en) | Photon radar and method for full-airspace real-time detection | |
| Wang et al. | Detecting sand-dust storms using a wind-profiling radar | |
| CN214585992U (en) | Photon radar for full-airspace real-time detection | |
| Asano et al. | Analysis of tropical cyclones using microwave satellite imagery | |
| Sun et al. | Ultraviolet Rayleigh lidar for wind and temperature measurements | |
| Sheridan | Review of literature on remote sensing technologies and applications for volume/profile measurement of wind and turbulence |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171114 Termination date: 20190405 |