CN103472255A - Full-optical-fiber Doppler coherent laser radar wind speed measuring device - Google Patents
Full-optical-fiber Doppler coherent laser radar wind speed measuring device Download PDFInfo
- Publication number
- CN103472255A CN103472255A CN2013104224952A CN201310422495A CN103472255A CN 103472255 A CN103472255 A CN 103472255A CN 2013104224952 A CN2013104224952 A CN 2013104224952A CN 201310422495 A CN201310422495 A CN 201310422495A CN 103472255 A CN103472255 A CN 103472255A
- Authority
- CN
- China
- Prior art keywords
- full
- output terminal
- wind speed
- input end
- optical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 49
- 230000001427 coherent effect Effects 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 230000008878 coupling Effects 0.000 claims description 26
- 238000010168 coupling process Methods 0.000 claims description 26
- 238000005859 coupling reaction Methods 0.000 claims description 26
- 230000007246 mechanism Effects 0.000 claims description 26
- 238000012545 processing Methods 0.000 claims description 18
- 239000000835 fiber Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000001228 spectrum Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000005436 troposphere Substances 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
Images
Abstract
A full-optical-fiber Doppler coherent laser radar wind speed measuring device is composed of a laser device, a circulator, a telescope, a coupler, a balanced detector, an amplifier, a controller, a analog-digital converter, a processor, a scanner, a waveform modulator and a display and storage unit. The full-optical-fiber Doppler coherent laser radar wind speed measuring device can achieve wind speed measurement which is high in high wind speed measuring accuracy and range resolution and meet requirements of wind speed measurement with different detection distances, different range resolutions and different wind speeds.
Description
Technical field
The present invention relates to anemometry laser radar, particularly a kind of full optical fiber Doppler coherent laser windfinding radar device and measuring method thereof.
Background technology
Doppler's coherent wind laser radar has been widely used in the atmospheric wind information measurement abroad, comprise clear-air turbulence, wind shear, airport survey wind, hurricane tracking and the detection of aircraft trace eddy current etc., at home the existing relevant report of vehicle-mounted Doppler's coherent wind laser radar.Adopt the laser radar mode can make up to measuring wind speed the deficiency that microwave radar is surveyed when the fine day, can obtain higher measuring wind speed precision and range resolution simultaneously when measuring.For adapting to measurement requirement complicated and changeable, Doppler's coherent wind laser radar of simultaneous adaptation moving platform becomes the trend of development, for low troposphere measuring wind speed, take 2.0 μ m of eye-safe or 1.5 mu m coherent laser radars as main in band selection; Full optical fiber compact, low-power consumption and the laser windfinding radar device of being convenient to safeguard become the focus of domestic and international research.
Summary of the invention
The problem to be solved in the present invention is to overcome the deficiency of traditional wind measurement method, and a kind of full optical fiber Doppler coherent laser radar wind speed measuring device is provided.This device can be realized the measuring wind speed of high wind speed measuring accuracy and High Range Resolution, can meet the measuring wind speed demand of different detection ranges, different distance resolution and different wind speed.
Full optical fiber Doppler coherent laser radar wind speed measuring device according to claim 1, it is characterized in that described ultimate principle is based on the Doppler measurement technology of laser, launch two bundle laser by laser instrument, light beam, as flashlight, is gone out by telescope and scanner transmitted; Light beam is used for coherent detection as local oscillator light; Receive echoed signal light and local oscillator light carries out coherent detection, obtain echoed signal light and the local oscillator light frequency is poor, this difference on the frequency has comprised Doppler shift information, obtain sight line wind speed corresponding to Doppler shift information after processing by signal, by many group sight line wind speed, calculate again, the dressing plate motion state, can obtain three-dimensional wind profile information simultaneously.
Technical solution of the present invention is as follows:
A kind of full optical fiber Doppler coherent laser radar wind speed measuring device, comprise full-optical-fiber laser and circulator, the first output terminal at described full-optical-fiber laser is connected with the first port of described circulator, the outbound course of the second port of this circulator is telescope, this telescope is connected with the first input end of scanner, the outbound course of the 3rd port of described circulator is the first input end of coupling mechanism, the second output terminal of described full-optical-fiber laser is connected with the second input end of described coupling mechanism, the first output terminal of this coupling mechanism is connected with the first input end of balance detection device, the second output terminal of this coupling mechanism is connected with the second input end of balance detection device, the output terminal of described balance detection device is connected with the input end of amplifier, the output terminal of this amplifier is connected with the first input end of analog to digital capture card, the output terminal of described analog to digital capture card is connected with the first input end of the data processing unit with processing capability in real time, the real-time demonstration of output termination and storage unit and the storage terminal thereof of data processing unit, the output terminal that the input end of described full-optical-fiber laser is the waveform modulated device, the first output terminal that the input end of described waveform modulated device is controller, the second output terminal of described controller is connected with the second input end of scanner, the 3rd output terminal of controller is connected with the second input end of analog to digital capture card, the 4th output terminal of controller is connected with the second input end of data processing unit.
Described full-optical-fiber laser is that single mode is protected inclined to one side full-optical-fiber laser, and the laser frequency of the first output terminal of this full-optical-fiber laser is f
0+ Δ f is light-pulse generator; The laser frequency of the second output terminal of this full-optical-fiber laser is f
0, be continuous light source.
Described telescope is the telescopic system that transmits and receives common optical axis.
Described scanner is rotary-type wedge deflecting mirror or two mirror scanning mirrors, and the scan position angle is 0 to 360 ° of scope.
The fiber coupler that described coupling mechanism is 2 * 2.
Described amplifier is analogue amplifier.
The embedded field programmable gate array (FPGA) and digital signal processor (DSP) with processing capability in real time of described processor,
Described demonstration and storage unit and storage terminal thereof are based on computer (PC).
Described controller is the instruction control unit based on FPGA.
The flow process of the full optical fiber Doppler of the present invention coherent laser radar wind speed measuring device is as follows:
1. the laser that the first output terminal of laser instrument sends is as flashlight, enter telescope after the second port output by this circulator after this flashlight is entered by the first port of circulator, by launching after scanner deflection, the laser that the second output terminal of laser instrument sends enters the second input end of coupling mechanism as local oscillator light, the crest frequency of this signal is f
0;
2. it is adjustable that the laser that the first output terminal of described laser instrument sends has pulse width according to the output signal of waveform modulated device, pulse shape is adjustable, described laser instrument is that to have a laser pulse repetition frequency adjustable, the full optical fiber compact pulsed laser that laser pulse intermediate frequency Δ f is adjustable;
3. after described scanner receiving target echoed signal light, first input end through scanner oppositely enters telescope, the second port by described circulator enters described circulator and enters the first input end of coupling mechanism through the 3rd port of this circulator again, and this signal frequency is f
0+ Δ f+f
d;
4. the signal of the first output terminal output of described coupling mechanism enters the first input end of balance detection device, the signal of the second output terminal output of this coupling mechanism enters the second input end of balance detection device, two paths of signals light becomes a road electric signal by after the balance detection device, and the crest frequency of this power spectrum signal is Δ f+f
d, Δ f+f
dfor carrying the Doppler frequency numerical value of wind speed information;
5. described amplifier is common single channel electronic simulation amplifier, and enlargement ratio can be regulated;
6. described modulus Data Acquisition Card carries out digital collection to the electric signal of described amplifier output, by described processor, is undertaken obtaining the power spectrum signal after Fourier transform, and the crest frequency of this signal is f=Δ f+f
d, wherein Δ f is the intermediate frequency that laser instrument produces, f
dfor Doppler frequency, Doppler frequency and be parallel on the workbench direction and with respect to the corresponding relation between the sight line wind speed v of workbench be
the output wavelength that λ is laser instrument;
7. described processor calculates final sight line wind speed:
8. described demonstration and storage unit and memory terminal thereof can show three-dimensional wind profile information, corresponding range information and the device state information after the computing of many group sight line wind speed in real time.
The invention has the advantages that:
1, adopt the full-optical-fiber laser of eye-safe, ripe optical fibre device, be applicable to static and motion platform, power consumption is little, be easy to connect, maintain easily, install working stability, environmental suitability by force, can resist shock and vibration.
2, adopt the small signal process technology, can be by the multiple pulses technology that add up, in frequency spectrum noise-removed technology extraction power spectrum than random noise amplitude also little signal.The effective breadth of individual pulse signal is greater than 1% noise amplitude and all can be extracted.
3, adopt the heterodyne coherent detection technology, can effectively detect the signal with photon magnitude, make device can be operated in quantum detection limit place, than direct detection, obtain higher signal to noise ratio (S/N ratio).
4, adopt the pure-tone polse Laser output, can realize the high resolving power measurement of detected with high accuracy and the range gate of wind speed.
5, adopted the pulse waveform modulation technique, laser radar emission pulse laser waveform, pulse width and repetition frequency can be regulated in large scope, meet the laser radar measuring wind speed demand of different detection ranges and different distance resolution.
The accompanying drawing explanation
Fig. 1 is the full optical fiber Doppler of the present invention coherent laser radar wind speed measuring device structured flowchart
Embodiment
Below in conjunction with embodiment and accompanying drawing, the invention will be further described, but should not limit the scope of the invention with this.
At first please refer to Fig. 1, Fig. 1 is the full optical fiber Doppler of the present invention coherent laser radar wind speed measuring device one-piece construction block diagram.As seen from Figure 1, the full optical fiber Doppler of the present invention coherent laser radar wind speed measuring device, comprise full-optical-fiber laser 1 and circulator 2, the first output terminal at described full-optical-fiber laser 1 is connected with the first port of described circulator 2, the outbound course of the second port of this circulator is telescope 3, this telescope 3 is connected with the first input end of scanner 13, the outbound course of the 3rd port of described circulator 2 is first input ends of coupling mechanism 4, the second output terminal of described full-optical-fiber laser 1 is connected with the second input end of described coupling mechanism 4, the first output terminal of this coupling mechanism 4 is connected with the first input end of balance detection device 5, the second output terminal of this coupling mechanism 4 is connected with the second input end of balance detection device 5, the output terminal of described balance detection device 5 is connected with the input end of amplifier 6, the output terminal of this amplifier 6 is connected with the first input end of analog to digital capture card 11, the output terminal of described analog to digital capture card 11 is connected with the first input end of the data processing unit 12 with processing capability in real time, the real-time demonstration of output termination of data processing unit 12 and storage unit and storage terminal 15 thereof, the output terminal that the input end of described full-optical-fiber laser 1 is waveform modulated device 14, the first output terminal that the input end of described waveform modulated device 14 is controller 10, the second output terminal of described controller 10 is connected with the second input end of scanner 13, the 3rd output terminal of controller 10 is connected with the second input end of analog to digital capture card 11, the 4th output terminal of controller 10 is connected with the second input end of data processing unit 12.
Described full-optical-fiber laser 1 output two segment beams, most of light is launched after entering successively circulator 2, telescope 3 and scanner 13 as flashlight; Fraction light directly enters coupling mechanism 4 for coherent detection as local oscillator light.Described scanner 13 receives that echoed signal enters telescope 3, enters coupling mechanism 4 by circulator 2 again; Enter after two of described coupling mechanism 4 is restrainted the laser coherence mixing and export, 2 bundle coherent lights enter balance detection device 5; Described balance detection device 5 output one tunnel mixing electric signal, this electric signal becomes digital signal output after amplifier 10 enters analog-digital converter 11, and this digital signal realizes the calculating of sight line wind speed and wind profile by processor 12; Result is showing and storage unit 15 demonstration outputs.Described controller 10 is to have to calculate the central processing unit of controlling function, by instruction control signal generator 14, carries out work and exports respective waveforms; Described controller 10 sends instruction gated sweep device 13 and carries out beam flying; Described controller 10 sends instruction control simulation digital quantizer 11 and processor 12 carries out real time data processing.
The concrete device that the present embodiment adopts is: described full-optical-fiber laser 1 is the single longitudinal mode full-optical-fiber laser; The transmitting-receiving common optical axis telescopic system that described telescope 3 is bore≤500mm; The fiber coupler that coupling mechanism 4 is splitting ratio 50/50 wavelength 1550nm; Described scanner 13 is rotatable circular wedge mirror or two mirror scanners; Described controller 10 is main control board; The real time signal processing circuit board that described processor 12 is embedded FPGA and DSP.
Full optical fiber Doppler coherent laser radar wind speed measuring device idiographic flow of the invention process is:
1. the first output terminal of laser instrument sends laser as flashlight, enter telescope after the second port output by this circulator after this flashlight is entered by the first port of circulator, by launching after scanner deflection, the laser that the second output terminal of laser instrument sends enters the second input end of coupling mechanism as local oscillator light, the frequency of this signal is f
0;
2. it is adjustable that the laser that the first output terminal of described laser instrument sends has pulse width according to waveform modulated device output signal, pulse waveform is adjustable, described laser instrument is that to have a laser pulse repetition frequency adjustable, the full fiber pulse laser that laser pulse intermediate frequency Δ f is adjustable;
3. enter telescope after described scanner receiving target echoed signal light, then the second port by described circulator enters described circulator and enter the first input end of coupling mechanism through the 3rd port of this circulator, the frequency of this signal is f
0+ Δ f+f
d;
4. the signal of the first output terminal output of described coupling mechanism enters the first input end of balance detection device, the signal of the second output terminal output of this coupling mechanism enters the second input end of balance detection device, two paths of signals light becomes a road electric signal by after the balance detection device, and the heterodyne signal frequency is Δ f+f
d, Δ f+f
dfor carrying the Doppler frequency numerical value of wind speed information;
5. described amplifier is common single channel electronics amplifier, and enlargement ratio can be regulated;
6. described analog digital collecting unit AD carries out analog acquisition to the electric signal of described amplifier output, by described processor, is undertaken obtaining the power spectrum signal after Fourier transform, and it is f=Δ f+f that the peak power of this signal is composed corresponding frequency
d, wherein Δ f is the intermediate frequency that laser instrument produces, f
dfor Doppler frequency, Doppler frequency and be parallel on the workbench direction and with respect to the corresponding relation between the sight line wind speed v of workbench be
the output wavelength that λ is laser instrument;
7. described processor can obtain final sight line wind speed:
8. described demonstration and storage unit and storage terminal can show that many group sight line wind speed show in real time, and obtain three-dimensional wind profile information, corresponding range information and device state information etc. after computing.
Claims (9)
1. a full optical fiber Doppler coherent laser radar wind speed measuring device, comprise full-optical-fiber laser (1) and circulator (2), it is characterized in that being connected with the first port of described circulator (2) at the first output terminal of described full-optical-fiber laser (1), the outbound course of the second port of this circulator is telescope (3), this telescope (3) is connected with the first input end of scanner (13), the outbound course of the 3rd port of described circulator (2) is the first input end of coupling mechanism (4), the second output terminal of described full-optical-fiber laser (1) is connected with the second input end of described coupling mechanism (4), first output terminal of this coupling mechanism (4) is connected with the first input end of balance detection device (5), second output terminal of this coupling mechanism (4) is connected with the second input end of balance detection device (5), the output terminal of described balance detection device (5) is connected with the input end of amplifier (6), the output terminal of this amplifier (6) is connected with the first input end of analog to digital capture card (11), the output terminal of described analog to digital capture card (11) is connected with the first input end of the data processing unit with processing capability in real time (12), the real-time demonstration of output termination of data processing unit (12) and storage unit and storage terminal (15) thereof, the output terminal that the input end of described full-optical-fiber laser (1) is waveform modulated device (14), the first output terminal that the input end of described waveform modulated device (14) is controller (10), the second output terminal of described controller (10) is connected with the second input end of scanner (13), the 3rd output terminal of controller (10) is connected with the second input end of analog to digital capture card (11), the 4th output terminal of controller (10) is connected with the second input end of data processing unit (12).
2. full optical fiber Doppler coherent laser radar wind speed measuring device according to claim 1, is characterized in that described full-optical-fiber laser (1) protects inclined to one side full-optical-fiber laser for single mode, and the laser frequency of first output terminal of this full-optical-fiber laser (1) is f
0+ Δ f is light-pulse generator; The laser frequency of second output terminal of this full-optical-fiber laser (1) is f
0, be continuous light source.
3. full optical fiber Doppler coherent laser radar wind speed measuring device according to claim 1, is characterized in that described telescope (3) is for transmitting and receiving the telescopic system of common optical axis.
4. full optical fiber Doppler coherent laser radar wind speed measuring device according to claim 1, is characterized in that described scanner (13) is rotary-type wedge deflecting mirror or two mirror scanning mirrors, and the scan position angle is 0 to 360 ° of scope.
5. full optical fiber Doppler coherent laser radar wind speed measuring device according to claim 1, is characterized in that the fiber coupler that described coupling mechanism (4) is 2 * 2.
6. full optical fiber Doppler coherent laser radar wind speed measuring device according to claim 1, is characterized in that described amplifier (6) is analogue amplifier.
7. full optical fiber Doppler coherent laser radar wind speed measuring device according to claim 1, is characterized in that the embedded field programmable gate array (FPGA) and digital signal processor (DSP) with processing capability in real time of described processor (12).
8. full optical fiber Doppler coherent laser radar wind speed measuring device according to claim 1, is characterized in that described demonstration and storage unit and storage terminal thereof (15) are based on computer (PC).
9. full optical fiber Doppler coherent laser radar wind speed measuring device according to claim 1, is characterized in that described controller (10) is for the instruction control unit based on FPGA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310422495.2A CN103472255B (en) | 2013-09-16 | 2013-09-16 | Full-optical-fiber Doppler coherent laser radar wind speed measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310422495.2A CN103472255B (en) | 2013-09-16 | 2013-09-16 | Full-optical-fiber Doppler coherent laser radar wind speed measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103472255A true CN103472255A (en) | 2013-12-25 |
| CN103472255B CN103472255B (en) | 2017-01-18 |
Family
ID=49797181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310422495.2A Active CN103472255B (en) | 2013-09-16 | 2013-09-16 | Full-optical-fiber Doppler coherent laser radar wind speed measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103472255B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007445A (en) * | 2014-06-09 | 2014-08-27 | 南京中科神光科技有限公司 | All-fiber laser radar aerosol detecting device |
| CN104049105A (en) * | 2014-07-02 | 2014-09-17 | 中冶赛迪工程技术股份有限公司 | Method for measuring indoor natural wind velocity through optical fiber Doppler |
| CN105629258A (en) * | 2016-03-02 | 2016-06-01 | 东华大学 | Speed measurement and distance measurement system and speed measurement and distance measurement method based on pseudo-random code phase modulation and heterodyne detection |
| CN107831492A (en) * | 2017-06-29 | 2018-03-23 | 南京航空航天大学 | A kind of airbome windshear instrument and wind shear detection method |
| CN107884783A (en) * | 2017-12-11 | 2018-04-06 | 北京空间机电研究所 | A kind of fiber optical circulator for all-fiber coherent anemometry laser radar system |
| CN108627812A (en) * | 2018-05-28 | 2018-10-09 | 成都信息工程大学 | A kind of laser radar atmospheric visibility measurement method and device |
| CN110234979A (en) * | 2017-01-24 | 2019-09-13 | 三菱电机株式会社 | Laser radar apparatus |
| CN110832350A (en) * | 2017-06-09 | 2020-02-21 | Hrl实验室有限责任公司 | Continuous wave lidar wind speed sensor for operation on stratospheric vehicles |
| CN111273054A (en) * | 2018-12-05 | 2020-06-12 | 西卡西伯特博士及屈恩有限及两合公司 | Flow measuring method and flow measuring device for optical flow measurement |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4735503A (en) * | 1985-06-05 | 1988-04-05 | Deutsche Forschungs- Und Versuchsanstalt Fur Luft-Und Raumfahrt | Method for determining the direction and speed of wind in the atmosphere |
| CN1150650A (en) * | 1995-10-10 | 1997-05-28 | 杨光学公开有限公司 | Process and arrangement for measurement of physical values of light-scattering moving particles by means of laser doppler anemometer |
| CN102043144A (en) * | 2010-10-22 | 2011-05-04 | 中国科学院上海光学精密机械研究所 | All- optical- fiber coherent Doppler wind lidar signal processing device |
| CN102646920A (en) * | 2012-04-05 | 2012-08-22 | 中国科学院上海光学精密机械研究所 | Intracavity-frequency-doubling 532nm single-longitudinal-mode laser based on seed light injection |
-
2013
- 2013-09-16 CN CN201310422495.2A patent/CN103472255B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4735503A (en) * | 1985-06-05 | 1988-04-05 | Deutsche Forschungs- Und Versuchsanstalt Fur Luft-Und Raumfahrt | Method for determining the direction and speed of wind in the atmosphere |
| CN1150650A (en) * | 1995-10-10 | 1997-05-28 | 杨光学公开有限公司 | Process and arrangement for measurement of physical values of light-scattering moving particles by means of laser doppler anemometer |
| CN102043144A (en) * | 2010-10-22 | 2011-05-04 | 中国科学院上海光学精密机械研究所 | All- optical- fiber coherent Doppler wind lidar signal processing device |
| CN102646920A (en) * | 2012-04-05 | 2012-08-22 | 中国科学院上海光学精密机械研究所 | Intracavity-frequency-doubling 532nm single-longitudinal-mode laser based on seed light injection |
Non-Patent Citations (3)
| Title |
|---|
| XIAOPENG ZHU等: "Development of all-solid coherent Doppler wind lidar", 《CHINESE OPTICS LETTERS》 * |
| 史双瑾等: "多普勒激光雷达在风场测量中的应用", 《中国科技文献》 * |
| 马宗峰等: "基于1.55μm的全光纤测速激光雷达", 《北京航空航天大学学报》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007445A (en) * | 2014-06-09 | 2014-08-27 | 南京中科神光科技有限公司 | All-fiber laser radar aerosol detecting device |
| CN104049105A (en) * | 2014-07-02 | 2014-09-17 | 中冶赛迪工程技术股份有限公司 | Method for measuring indoor natural wind velocity through optical fiber Doppler |
| CN105629258A (en) * | 2016-03-02 | 2016-06-01 | 东华大学 | Speed measurement and distance measurement system and speed measurement and distance measurement method based on pseudo-random code phase modulation and heterodyne detection |
| CN110234979A (en) * | 2017-01-24 | 2019-09-13 | 三菱电机株式会社 | Laser radar apparatus |
| CN110234979B (en) * | 2017-01-24 | 2022-01-11 | 三菱电机株式会社 | Laser radar device |
| CN110832350A (en) * | 2017-06-09 | 2020-02-21 | Hrl实验室有限责任公司 | Continuous wave lidar wind speed sensor for operation on stratospheric vehicles |
| US10928519B2 (en) | 2017-06-09 | 2021-02-23 | Hrl Laboratories, Llc | CW LIDAR wind velocity sensor for operation on a stratospheric vehicle |
| CN107831492A (en) * | 2017-06-29 | 2018-03-23 | 南京航空航天大学 | A kind of airbome windshear instrument and wind shear detection method |
| CN107831492B (en) * | 2017-06-29 | 2021-12-14 | 南京航空航天大学 | Airborne wind shear instrument and wind shear detection method |
| CN107884783A (en) * | 2017-12-11 | 2018-04-06 | 北京空间机电研究所 | A kind of fiber optical circulator for all-fiber coherent anemometry laser radar system |
| CN108627812A (en) * | 2018-05-28 | 2018-10-09 | 成都信息工程大学 | A kind of laser radar atmospheric visibility measurement method and device |
| CN111273054A (en) * | 2018-12-05 | 2020-06-12 | 西卡西伯特博士及屈恩有限及两合公司 | Flow measuring method and flow measuring device for optical flow measurement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103472255B (en) | 2017-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103472255B (en) | Full-optical-fiber Doppler coherent laser radar wind speed measuring device | |
| CN105158770B (en) | A kind of adjustable coherent wind laser radar system of range resolution ratio | |
| CN106940444B (en) | Coherent Doppler wind-observation laser radar based on microwave differential gain | |
| CN105629258B (en) | Test the speed range-measurement system and method based on pseudo-random code phases modulation and heterodyne detection | |
| CN100478703C (en) | Chaos laser range-measurement method and device based on semiconductor laser | |
| CN103823221A (en) | Pulse laser coherent wind measuring radar | |
| CN103777207B (en) | A kind of three wavelength real-time calibration laser radars | |
| CN105425245A (en) | Long-distance high-repetition-frequency laser three-dimensional scanning device based on coherent detection | |
| CN111650601B (en) | High-resolution 3D imaging method and device for vehicle-mounted coherent laser radar | |
| CN107688187B (en) | Target detection laser radar based on spatial wavelength coding | |
| CN106199559B (en) | A kind of while atmospheric sounding wind speed and depolarization ratio coherent laser radar | |
| CN106226778A (en) | A kind of coherent lidar system of high resolution measurement remote object | |
| CN108802425A (en) | A kind of airborne measuring wind speed laser radar system | |
| CN103116164B (en) | Heterodyne pulse compression type multifunctional laser radar and controlling method thereof | |
| CN103076611B (en) | Method and device for measuring speed and distance by coherent detecting laser | |
| CN1844951A (en) | Apparatus and method for distance measurement using chaos laser of optical fiber laser device | |
| CN204719233U (en) | A kind of target detection unit based on double-frequency laser | |
| CN109541636B (en) | Non-blind area high-distance resolution laser radar wind measurement system and method | |
| CN113391327A (en) | Doppler wind finding radar system and method based on continuous laser | |
| CN110531378B (en) | Continuous wave laser coherent wind-finding radar system of wind turbine generator | |
| CN210155331U (en) | Laser radar | |
| CN102590822A (en) | Chirped modulation mechanism-based laser radar | |
| CN113640832A (en) | Multi-beam coherent detection laser radar | |
| CN210155332U (en) | Distributed laser radar | |
| CN216485509U (en) | Hand-held type anemometry lidar based on single beam detection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150917 Address after: 210038 A seat, Longgang Science Park, Heng Yuan Road, Nanjing economic and Technological Development Zone, Nanjing, Jiangsu Applicant after: NANJING INSTITUTE OF ADVANCED LASER TECHNOLOGY Address before: 201800 Jiading District 800-211 post office box, Shanghai Applicant before: SHANGHAI INSTITUTE OF OPTICS AND FINE MECHANICS CHINESE ACADEMY OF SCIENCES |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160113 Address after: 210038, Longgang economic and Technological Development Zone, Nanjing, Nanjing Heng Road, science and Technology Park, building A Applicant after: NANJING MOVELASER TECHNOLOGY Co.,Ltd. Address before: 210038 A seat, Longgang Science Park, Heng Yuan Road, Nanjing economic and Technological Development Zone, Nanjing, Jiangsu Applicant before: NANJING INSTITUTE OF ADVANCED LASER TECHNOLOGY |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 0601, Building C, Xingzhi Science Park, Xingzhi Road, Nanjing Economic and Technological Development Zone, Jiangsu 210046 Patentee after: Nanjing Mulai Laser Technology Co.,Ltd. Address before: 210038 building a, Longgang science and Technology Park, Hengyuan Road, Nanjing Economic and Technological Development Zone, Nanjing City, Jiangsu Province Patentee before: NANJING MOVELASER TECHNOLOGY Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 210000 Building B2, Hongfeng Science Park, Kechuang Road, Nanjing Economic and Technological Development Zone, Jiangsu Province Patentee after: Nanjing Mulai Laser Technology Co.,Ltd. Address before: Room 0601, Building C, Xingzhi Science Park, Xingzhi Road, Nanjing Economic and Technological Development Zone, Jiangsu 210046 Patentee before: Nanjing Mulai Laser Technology Co.,Ltd. |