CN104865580B - A kind of spaceborne marine atmosphere parameter Airborne Lidar examining system - Google Patents
A kind of spaceborne marine atmosphere parameter Airborne Lidar examining system Download PDFInfo
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- CN104865580B CN104865580B CN201510259696.4A CN201510259696A CN104865580B CN 104865580 B CN104865580 B CN 104865580B CN 201510259696 A CN201510259696 A CN 201510259696A CN 104865580 B CN104865580 B CN 104865580B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/95—Lidar systems specially adapted for specific applications for meteorological use
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/483—Details of pulse systems
- G01S7/484—Transmitters
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- 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
Abstract
A kind of spaceborne marine atmosphere parameter Airborne Lidar examining system, including tunable laser subsystem, reception optical subsystem, signal processing subsystem, control and data process subsystem；Tunable laser subsystem produces 935nm, 761nm laser and exposes to the air in ocean overhead, receive the optical signal that two kinds of wavelength are isolated during optical subsystem exposes to the backscatter signal produced after air from laser, signal processing subsystem carries out opto-electronic conversion, amplification and analog-to-digital conversion to optical signal, and control calculates the temperature, humidity and density for obtaining marine atmosphere with the data signal that data process subsystem is sent according to signal processing subsystem.The present invention is compared with prior art, atmospheric temperature, humidity, the density parameter distribution in ocean overhead can be detected on a large scale, it is all significant to the science natural laws such as research ocean overhead weather environment, climatic variation, land-sea overhead water vapor transmission, air motion and raising operation on the sea and ocean overhead aircraft flight etc..
Description
Technical field
The present invention relates to marine atmosphere temperature, humidity, density active remote sensing field of detecting, particularly a kind of spaceborne ocean is big
Gas parameter Airborne Lidar examining system.
Background technology
Ocean area takes up an area 71% or so of the ball surface gross area, obtains atmospheric parameter and weather with grasping ocean overhead
Environment is particularly important for the understanding for improving naval air environment and research.The major parameter of naval air environment includes temperature
Degree, humidity, density etc., these parameters are for research ocean overhead weather environment, climatic variation, the empty water vapor transmission in land-sea, greatly
The science natural law such as fate is dynamic, and to improve operation on the sea and ocean overhead aircraft flight etc. all significant.
Conventional Atmospheric Survey remote sensing equipment includes passive remote sensing equipment and ground laser radar, and still, passive remote sensing is set
Standby to carry out round-the-clock daytime measurement, detection accuracy is low, it is impossible to obtain the three-dimensional information of air.And ground laser radar by
The limitation of investigative range, it is impossible to which detected with high accuracy is carried out to the air in the global range comprising ocean overhead.
The content of the invention
Present invention solves the technical problem that being：Overcoming the deficiencies in the prior art, there is provided a kind of detection accuracy height, scope are big
And the spaceborne marine atmosphere parameter Airborne Lidar of atmospheric temperature, humidity, the density parameter distribution in ocean overhead can be detected simultaneously
Examining system.
The present invention technical solution be：A kind of spaceborne marine atmosphere parameter Airborne Lidar examining system, including it is adjustable
Humorous formula laser subsystem, reception optical subsystem, signal processing subsystem, control and data process subsystem, wherein
Control and data process subsystem, including control module and data processing module；Control module send start-up command
To tunable laser subsystem, electric signal multiplication factor, analog-to-digital conversion parameter are delivered into signal processing subsystem；At data
Manage module and receive the data signal that signal processing subsystem is sent, calculated using Difference Absorption algorithm and obtain oxygen in marine atmosphere
With the concentration of steam, and then the temperature, humidity and density of marine atmosphere are obtained according to the equation of gas state；The analog-to-digital conversion ginseng
Number includes analog-to-digital conversion sample rate, analog-to-digital conversion quantization digit；
Tunable laser subsystem, including 935nm generating lasers, 761nm generating lasers；935nm laser is sent out
Emitter, is received after the start-up command that control is sent with control module in data process subsystem, and it is 1.0pm's to produce line width
935nm laser and the air for exposing to ocean overhead；761nm generating lasers, are received in control and data process subsystem
After the start-up command that control module is sent, produce the laser for the 761nm that line width is 1.0pm and expose to the air in ocean overhead；
Receive optical subsystem, including optical telescope, optical filtering beam splitting system；Optical telescope, receives 935nm laser
The backscatter signal produced after the air in ocean overhead is exposed to 761nm laser, and delivers to optical filtering beam splitting system respectively；
Optical filtering beam splitting system, from 935nm laser and 761nm laser expose to the backscatter signal produced after air in isolate
The optical signal of 935nm wavelength and the optical signal of 761nm wavelength, and signal processing subsystem is delivered to respectively；
Signal processing subsystem, electric signal multiplication factor, the analog-to-digital conversion parameter of receive and control module transmission；Receive and filter
The optical signal of 935nm wavelength that beam splitting system is sent obtains correspondence with carrying out opto-electronic conversion respectively after the optical signal of 761nm wavelength
Electric signal after be amplified according to electric signal multiplication factor, then according to analog-to-digital conversion parameter carry out analog-to-digital conversion obtain its point
Not corresponding data signal, control and data process subsystem are delivered to by data signal.
Described 935nm generating lasers include the first injection seeded laser diode, the first Nd：YAG pump units,
One Ti：SAPPIRE power oscillators, the first beam splitter prism, water vapor absorption pond；First injection seeded laser diode is being received
After the start-up command that control is sent with control module in data process subsystem, the first Nd is driven：YAG pump units produce laser
Wavelength 935nm, pulsewidth 500ns pulse laser simultaneously delivers to the first Ti：SAPPIRE power oscillators, the first Ti：SAPPIRE work(
Rate oscillator is adjusted after receiving pulse laser, obtains wavelength for 935nm, pulse energy is 100mJ, and pulsewidth is 500ns, arteries and veins
Transmission interval is rushed for 400 μ s, spectrum width is 1pm pulse laser, and is irradiated into water vapor absorption pond by the first beam splitter prism,
Water vapor absorption pond is transmitted after receiving pulse laser, if the pulse laser light intensity transmitance is 70%-90%, first
Ti：SAPPIRE power oscillators will will adjust obtained pulsed laser irradiation to the air in ocean overhead, otherwise regenerate arteries and veins
Impulse light is until the pulse laser passes through the light intensity transmitance in water vapor absorption pond to expose to ocean overhead after 70%-90%
Air.
Described 761nm generating lasers include second seed injection laser diode, the 2nd Nd：YAG pump units,
Two Ti：SAPPIRE power oscillators, the second beam splitter prism shine, oxygen absorption pond；Second seed is injected laser diode and received
After the start-up command that control is sent with control module in data process subsystem, the 2nd Nd is driven：YAG pump units produce laser
Wavelength 761nm, pulsewidth 500ns pulse laser simultaneously delivers to the 2nd Ti：SAPPIRE power oscillators, the 2nd Ti：SAPPIRE work(
Rate oscillator is adjusted after receiving pulse laser, obtains wavelength for 761nm, pulse energy is 100mJ, and pulsewidth is 500ns, arteries and veins
Transmission interval is rushed for 400 μ s, spectrum width is 1pm pulse laser, and is irradiated into oxygen absorption pond, oxygen by the second beam splitter prism
Aspiration receives pond is transmitted after receiving pulse laser, if the pulse laser light intensity transmitance is 70%-90%, the 2nd Ti：
SAPPIRE power oscillators will will adjust obtained pulsed laser irradiation to the air in ocean overhead, otherwise regenerate pulse
Laser is until the pulse laser passes through the light intensity transmitance in oxygen absorption pond to expose to the big of ocean overhead after 70%-90%
Gas.
The common light path Cassegrain antenna structure of coaxial type that described optical telescope bore is 1.5m.
Described optical filtering beam splitting system is by the way of narrow band pass filter is combined with etalon.
The advantage of the present invention compared with prior art is：
(1) present system overcome passive remote sensing equipment can not carry out round-the-clock daytime measurement and detection accuracy it is low,
The deficiency of the three-dimensional information of air can not be obtained, the deficiency that ground laser radar is limited by investigative range can be while big model
The atmospheric temperature in the detection ocean overhead enclosed, humidity, density parameter distribution；
(2) present system compared with prior art, using laser differential absorption techniques to oxygen in marine atmosphere and water
The characteristic gas such as vapour are measured, and then obtain according to the equation of gas state feature of the temperature, humidity and density of marine atmosphere
Gas is measured, and is realized simple and convenient；
(3) present system compared with prior art, can on a large scale the temperature of Measuring Oceanic atmospheric environment, humidity,
The parameters such as density, for science such as research ocean overhead weather environment, climatic variation, the empty water vapor transmission in land-sea, air motions
The natural law and raising operation on the sea and ocean overhead aircraft flight etc. are all significant.
Brief description of the drawings
Fig. 1 is spaceborne marine atmosphere parameter Airborne Lidar examining system of the invention；
Fig. 2 is present system Nd:YAG pumping ti sapphire laser schematic diagrams；
Fig. 3 is present system 935nm pulse laser output scheme schematic diagrames；
Fig. 4 is present system 761nm pulse laser output scheme schematic diagrames；
Fig. 5 is present system optical spectroscopic reception system schematic diagram.
Embodiment
The present invention proposes a kind of spaceborne marine atmosphere parameter Airborne Lidar examining system, and the laser radar system uses difference
Principle of absorption measures the concentration of atmospheric oxygen and steam, recycles the equation of gas state, the temperature of inverting air, humidity and close
Degree.This laser radar system is made up of four parts, is tunable laser subsystem successively from left to right, is received optics subsystem
System, signal processing subsystem, control and data process subsystem.Tunable laser subsystem goes out under control of the control system
Laser is penetrated, laser interacts with the oxygen and vapour molecule in air, receives the back scattering that optical subsystem receives air
Echo-signal, is operated by amplification, filtering, digitlization of signal processing subsystem etc., is transferred data at control and data
Subsystem is managed, later data processing is carried out, obtains the temperature, humidity and density of marine atmosphere.It is big for spaceborne ocean as shown in Figure 1
Temperature degree, humidity and density detection laser radar system composition figure,
1st, control and data process subsystem
Control and data process subsystem, including control module and data processing module；Data processing module is directly interior
Control and the program in data process subsystem interface are embedded to, oxygen and water in marine atmosphere are calculated using Difference Absorption algorithm
The concentration of vapour, the temperature, humidity and density of marine atmosphere are finally inversed by conjunction with the equation of gas state.Control module includes tunable
Control, photodetector control, the data acquisition module control of formula laser subsystem, control the switching on and shutting down of laser, photoelectricity
The multiplication factor of detector and the sample rate of data collecting card and analog-to-digital conversion quantization digit.
It is by controlling system to realize spaceborne marine atmosphere temperature, humidity, the basic function of density detection laser radar system
2 top layer patterns and 3 subpatterns in system are completed.Wherein, 2 top layer patterns are ready mode (Standby) and work
Operation mode (Operation), three subpatterns include waiting (Wait), tuning (Tune) and data acquisition (Data).Workflow
Cheng Shi：After system power-up, preparation standby mode is entered, in this mode, Optical Maser System, Photodetection system etc. are in temperature
Spend the stabilization sub stage.After laser radar system is connected to operating instruction, operational mode state is contributed to, submodule is at this moment tuned and starts
The scanning tuning work of wanted laser output wavelength, scanning is divided into coarse adjustment and accurate adjustment process, after the completion of the process, is transferred to letter
In number processing subsystem, laser starts to launch laser measurement signal, and synchronous signal processing subsystem is according to preset parameter pair
Laser echo signal is received, amplified, being filtered, analog-to-digital conversion, then data signal is sent into control and data process subsystem,
Control completes laser after the inverting of data, storage with data process subsystem and launches second pulse signal, carries out second and takes turns
Work.
2nd, tunable laser subsystem
Tunable laser is the subsystem being operated under dual wavelength double pulse modes, the wherein a length of 935nm of double wave with
761nm, pulse energy is 100mJ, and pulsewidth is 500ns, and impulse ejection is 1pm at intervals of 400 μ s, spectrum width.The adjustable laser
Device is by frequency multiplication Nd:The system that YAG is constituted as pumping driving source and single mode laser diode as injection seeded.935nm
Generating laser includes the first injection seeded laser diode, the first Nd：YAG pump modules, the first Ti：SAPPIRE power shakes
Swing device, the first beam splitter prism photograph, vapor (H2O) absorption cell, 761nm generating lasers include second seed injection laser two pole
Manage (LD), the 2nd Nd：YAG pump modules, the 2nd Ti：SAPPIRE(Ti:Al2O3) power oscillator, the second beam splitter prism shine, oxygen
Gas (O2) absorption cell, wherein, 935nm generating lasers in the laser radar system course of work, are with 761nm generating lasers
The instruction sent by receiving control and data process subsystem works simultaneously.
1)Nd:YAG pump laser sources
High power semiconductor array laser is used as inner cavity frequency-doubling Nd：The pumping source of YAG laser, its internal structure is as schemed
Shown in 2.Three groups of laser diode bars are symmetrically arranged in Nd:, being capable of equably pumping active medium around YAG rods.Every group is swashed
Optical diode bar is made up of 4 power for 20W laser diode Bar bars, and laser diode is continuously exported, highest pump power
For 240W.Whole component (including laser diode and Nd:YAG rods) provide cooling by the cooling water flowed.
Pass through Nd:YAG laser crystal produces the pulsed light that wavelength is 1064nm.The pulse laser first passes through optically isolated mould
Block, the characteristic of the optically isolated module is only to allow the Laser Transmission in particular propagation direction, it is to avoid after 1064nm pulse lasers
To propagation to Nd:The damage of YAG crystal.Then in turn through amplification module 1, amplification module 2, speculum M1, two times of frequency modules
After CDA, single pulse energy is produced for 1.4J, repetition rate is 5Hz, wavelength is 532nm laser signal.The pulse laser is believed
Number it is used as Ti：SAPPIRE(Ti:Al2O3) the input pump signal of power oscillator will be implanted into power oscillator system.
2)Ti：SAPPIRE(Ti:Al2O3) power oscillator
In Fig. 3 and Fig. 4, Ti：SAPPIRE(Ti:Al2O3) power oscillator is a unstable resonator structure, this is humorous
Shake a length of 1.5m of chamber of chamber.The resonator by step reflect outgoing mirror (GRM), reflectivity for 97% plane mirror (HR),
The element compositions such as four layers of birefringent filter (BRF), holographic corner reflector (HRR), plane mirror (M), beam splitter (BS).It is humorous
The Ti shaken in chamber:Al2O3Crystal bar two ends inclined-plane is Brewster's angle with its crystal Guangzhou with nothing left angular separation, and laser crystal is long
Spend for 18mm.
3) optical maser wavelength tuning control
Ti：SAPPIRE(Ti:Al2O3) fine-tuning for laser crystal output wavelength be by controlling to be used as resonator seed
The output wavelength of the laser diode of injection is realized.Specific method is：Laser diode continuously exports 100mW laser, and
The laser about 1mW in resonator is injected into by high reflection mirror (HR).Injection seeded technology can exist spectral width control
1.0pm, and can be by wavelength stability control in ± 0.25pm or so.
4) spectral purity and pulse are to output control
In Fig. 3 and Fig. 4, the spectral purity of tunable laser subsystem is irradiated to by measuring laser firing pulses
Spread length for 200m vapor container intensity in transmission than realizing.Embodiment is：Pass through photodiode
Transmitted light intensity is detected, the output wavelength of diode is that some for being locked into vapor is fixed on absorption line.Meanwhile, two poles
The temperature of pipe output can reflect the change of optical maser wavelength feature with current signal.When laser radar system works, pass through
Control diode external temperature and current signal, you can realize generation of the pulse to laser signal for being directed to specific wavelength.
First injection seeded laser diode is receiving the start that control is sent with control module in data process subsystem
After instruction, the first Nd is driven：YAG pump units produce optical maser wavelength 935nm, and pulsewidth 500ns pulse laser simultaneously delivers to Ti：
SAPPIRE power oscillators, the first Ti：SAPPIRE power oscillators are adjusted after receiving pulse laser, and obtaining wavelength is
935nm, pulse energy is 100mJ, and pulsewidth is 500ns, and impulse ejection is at intervals of 400 μ s, and spectrum width is 1pm pulse laser, and
It is 90 (transmissions) by splitting ratio:First beam splitter prism of 10 (reflections) is irradiated into H2O absorption cells, H2O absorption cells receive pulse
Transmitted after laser, if the pulse laser light intensity transmitance is 70%-90%, the first Ti：SAPPIRE power oscillators
Obtained pulsed laser irradiation will will be adjusted to the air in ocean overhead, pulse laser is otherwise regenerated until the pulse laser
Pass through H2The light intensity transmitance of O absorption cells is to expose to the air in ocean overhead after 70%-90%.
Second seed injects laser diode and is receiving the start that control is sent with control module in data process subsystem
After instruction, the 2nd Nd is driven：YAG pump units produce optical maser wavelength 761nm, and pulsewidth 500ns pulse laser simultaneously delivers to Ti：
SAPPIRE power oscillators, the 2nd Ti：SAPPIRE power oscillators are adjusted after receiving pulse laser, and obtaining wavelength is
761nm, pulse energy is 100mJ, and pulsewidth is 500ns, and impulse ejection is at intervals of 400 μ s, and spectrum width is 1pm pulse laser, and
It is 90 (transmissions) by splitting ratio:Second beam splitter prism of 10 (reflections) is irradiated into oxygen absorption pond, and oxygen absorption pond is received
Transmitted after pulse laser, if the pulse laser light intensity transmitance is 70%-90%, the 2nd Ti：SAPPIRE power shakes
Obtained pulsed laser irradiation will will be adjusted to the air in ocean overhead by swinging device, otherwise regenerate pulse laser until the pulse
Laser passes through the light intensity transmitance in oxygen absorption pond to expose to the air in ocean overhead after 70%-90%.
3rd, optical subsystem is received
Spaceborne marine atmosphere temperature, density and humidity detection DIAL receiving telescope use bore for
The common light path Cassegrain's optical antenna structure of 1.5m coaxial types.Wherein telescopic system is made up of primary mirror and secondary mirror, so big mouth
The difficulty of processing energy relative reduction of footpath parabolic shape primary mirror, its error can carry out a certain degree of mend by the less secondary mirror of bore
Repay, the disc of confusion of telescope focal point is obviously reduced.In addition, this kind design can greatly reduce the volume of telescope, and energy
To receive echo-signal compared with small field of view, this has obvious effect for the suppression of ambient interferences light.
It is real according to the optical spectroscopic path being illustrated in fig. 5 shown below by the laser echo signal of optical antenna receiving telescope
Pre-processed before existing opto-electronic conversion, the reception optics that the program is illustrated is made up of two-way output channel, passes through the APD of different gains
Type Si detectors realize the purpose of Larger Dynamic scope laser echo signal detection.Filter system uses narrow band pass filter and etalon
With reference to mode, to suppress the interference of bias light.
4th, signal processing subsystem
For marine atmosphere temperature, density, humidity DIAL signal processing subsystem, mainly complete back
The opto-electronic conversion of ripple signal, amplification, filtering and analog-to-digital conversion.Wherein, detecting module uses high sensitivity low noise detector；Band
Width matching, high-amplification-factor signal power amplifier；Data acquisition module is using high accuracy, high speed data acquisition system and believes in real time
The components such as number process circuit are designed realization, it is ensured that high sensitivity, high stability and the height of laser radar electronics
Reliability.
The content not being described in detail in description of the invention belongs to the known technology of those skilled in the art.
Claims (5)
1. a kind of spaceborne marine atmosphere parameter Airborne Lidar examining system, it is characterised in that including tunable laser subsystem
System, reception optical subsystem, signal processing subsystem, control and data process subsystem, wherein
Control and data process subsystem, including control module and data processing module；Control module delivers to start-up command can
Tuner-type laser subsystem, signal processing subsystem is delivered to by electric signal multiplication factor, analog-to-digital conversion parameter；Data processing mould
Block receives the data signal that signal processing subsystem is sent, and is calculated using Difference Absorption algorithm and obtains oxygen and water in marine atmosphere
The concentration of vapour, and then obtain according to the equation of gas state temperature, humidity and density of marine atmosphere；The analog-to-digital conversion parameter bag
Include analog-to-digital conversion sample rate, analog-to-digital conversion quantization digit；
Tunable laser subsystem, including 935nm generating lasers, 761nm generating lasers；935nm generating lasers,
Receive after the start-up command that control is sent with control module in data process subsystem, produce line width swashing for 1.0pm 935nm
Light and the air for exposing to ocean overhead；761nm generating lasers, receive control and are sent out with control module in data process subsystem
After the start-up command sent, produce the laser for the 761nm that line width is 1.0pm and expose to the air in ocean overhead；
Receive optical subsystem, including optical telescope, optical filtering beam splitting system；Optical telescope, receive 935nm laser with
761nm laser exposes to the backscatter signal produced after the air in ocean overhead, and delivers to optical filtering beam splitting system respectively；Filter
Light beam splitting system, from 935nm laser and 761nm laser expose to the backscatter signal produced after air in isolate
The optical signal of 935nm wavelength and the optical signal of 761nm wavelength, and signal processing subsystem is delivered to respectively；
Signal processing subsystem, electric signal multiplication factor, the analog-to-digital conversion parameter of receive and control module transmission；Receive optical filtering light splitting
The optical signal of 935nm wavelength that system is sent is detected with the APD types Si after the optical signal of 761nm wavelength respectively through different gains
Device, then carries out opto-electronic conversion respectively, obtains after corresponding electric signal being amplified according to electric signal multiplication factor, then according to
Analog-to-digital conversion parameter carries out analog-to-digital conversion and obtains its corresponding data signal of difference, and data signal is delivered into control and data processing
Subsystem.
2. a kind of spaceborne marine atmosphere parameter Airborne Lidar examining system according to claim 1, it is characterised in that：It is described
935nm generating lasers include the first injection seeded laser diode, the first Nd：YAG pump units, the first Ti：SAPPIRE
Power oscillator, the first beam splitter prism, water vapor absorption pond；First injection seeded laser diode is being received at control and data
Manage after the start-up command that control module is sent in subsystem, drive the first Nd：YAG pump units produce optical maser wavelength 935nm, arteries and veins
Wide 500ns pulse laser simultaneously delivers to the first Ti：SAPPIRE power oscillators, the first Ti：SAPPIRE power oscillators are received
Be adjusted after pulse laser, obtain wavelength for 935nm, pulse energy is 100mJ, pulsewidth is 500ns, impulse ejection at intervals of
400 μ s, spectrum width is 1pm pulse laser, and is irradiated into water vapor absorption pond, water vapor absorption pond by the first beam splitter prism
Transmitted after receiving pulse laser, if the pulse laser light intensity transmitance is 70%-90%, the first Ti：SAPPIRE work(
Rate oscillator will will adjust obtained pulsed laser irradiation to the air in ocean overhead, otherwise regenerate pulse laser until should
Pulse laser passes through the light intensity transmitance in water vapor absorption pond to expose to the air in ocean overhead after 70%-90%.
3. a kind of spaceborne marine atmosphere parameter Airborne Lidar examining system according to claim 1 or 2, it is characterised in that：
Described 761nm generating lasers include second seed injection laser diode, the 2nd Nd：YAG pump units, the 2nd Ti：
SAPPIRE power oscillators, the second beam splitter prism shine, oxygen absorption pond；Second seed injects laser diode and is receiving control
After the start-up command sent with control module in data process subsystem, the 2nd Nd is driven：YAG pump units produce optical maser wavelength
761nm, pulsewidth 500ns pulse laser simultaneously delivers to the 2nd Ti：SAPPIRE power oscillators, the 2nd Ti：SAPPIRE power shakes
Swing after device receives pulse laser and be adjusted, obtain wavelength for 761nm, pulse energy is 100mJ, pulsewidth is 500ns, pulse hair
Penetrate at intervals of 400 μ s, spectrum width is 1pm pulse laser, and oxygen absorption pond is irradiated into by the second beam splitter prism, oxygen is inhaled
Receives pond is transmitted after receiving pulse laser, if the pulse laser light intensity transmitance is 70%-90%, the 2nd Ti：
SAPPIRE power oscillators will will adjust obtained pulsed laser irradiation to the air in ocean overhead, otherwise regenerate pulse
Laser is until the pulse laser passes through the light intensity transmitance in oxygen absorption pond to expose to the big of ocean overhead after 70%-90%
Gas.
4. a kind of spaceborne marine atmosphere parameter Airborne Lidar examining system according to claim 1 or 2, it is characterised in that：
The common light path Cassegrain antenna structure of coaxial type that described optical telescope bore is 1.5m.
5. a kind of spaceborne marine atmosphere parameter Airborne Lidar examining system according to claim 1 or 2, it is characterised in that：
Described optical filtering beam splitting system is by the way of narrow band pass filter is combined with etalon.
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