CN109960031A - Aerostatics laser relay mirror system and its simulator and emulation mode - Google Patents
Aerostatics laser relay mirror system and its simulator and emulation mode Download PDFInfo
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- CN109960031A CN109960031A CN201910351640.XA CN201910351640A CN109960031A CN 109960031 A CN109960031 A CN 109960031A CN 201910351640 A CN201910351640 A CN 201910351640A CN 109960031 A CN109960031 A CN 109960031A
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/02—Catoptric systems, e.g. image erecting and reversing system
- G02B17/06—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror
- G02B17/0647—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror using more than three curved mirrors
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0012—Optical design, e.g. procedures, algorithms, optimisation routines
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- G—PHYSICS
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- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
Abstract
A kind of aerostatics laser relay mirror system and its simulator and emulation mode, system include laser, adaptive optics module, relay lens module and object module.The atmospheric turbulence simulation device that can be simulated uplink atmospheric turbulance space and simulate downlink atmospheric turbulance space is added in simulator.The present invention has adaptive optics module, can carry out beam cleanup and correction atmospheric turbulance aberration under varying strength atmospheric turbulance；And beacon laser device is placed at object module, provides the aberration information of uplink and downlink atmospheric turbulance to adaptive optics module.Simulator has atmospheric turbulance and adaptive optics module, can carry out beam cleanup under varying strength atmospheric turbulance and correct the analog simulation of atmospheric turbulance aberration.It can be analyzed according to the physics law of adaptive optics and atmospheric optics according to aerostatics laser relay mirror system parameter to be emulated to determine simulator parameter simultaneously, so that constructing corresponding simulator realizes emulation.
Description
Technical field
The invention belongs to aerostatics laser relay mirror system simulation technical fields, and in particular to a kind of aerostatics laser relaying
Mirror system and its simulator and emulation mode.
Background technique
Aerostatics laser relay mirror system is to receive ground by the relay lens being placed on the aerostatics at certain height above sea level
The laser beam that light source is transmited to it redirects on focus emission to object module after receiving the relayed mirror module control of light beam, from
And the remote transmission of laser energy is completed, so aerostatics laser relay mirror system has the advantages that avoiding obstacles first.
Since adaptive optics module can correct aberration caused by atmospheric turbulance, so being configured with the aerostatics of adaptive optics module
Laser relay mirror system, which typically is provided with, reduces the advantages of atmosphere transmits influence and improve the efficiency of transmission of laser on laser.
The emulation of existing aerostatics laser relay mirror system generally has pure mathematics, physical model emulation and all-real object emulation
Two methods.Pure mathematics, physical model simulation study, cannot be close to actual motions normally due to certain models are inaccurate
As a result, even differing huge with actual the results of running sometimes.And experimental study is carried out using material object, it is at high cost and
R&D cycle is long.
United States Naval Postgraduate School has built laboratory three-axis satellite relay lens Beam Control simulation experiment platform, carries out
Research [the David M.Meissner.A three degree of freedom of relay mirror system flying platform Beam Control
test bed for nanosatellite and cubest attitudedynamics,determination and
control[D].Naval Postgraduate School,December 2009:1-76].This simulation experiment platform includes
Light source module, the three-axis satellite simulator of relay lens, object module and control processing module composition.But this relay lens light beam
Simulation experiment platform is controlled first without modules such as atmospheric turbulance and adaptive optics, can not carry out the side such as beam cleanup and control
The analog simulation in face；In addition also not according to true relay mirror system parameter, according to the object of adaptive optics and atmospheric optics
Reason rule determines simulator parameter to be analyzed.
Therefore, it is badly in need of now a kind of with atmospheric turbulance and the emulation of the aerostatics laser relay mirror system of adaptive optics module
The analysis method of device and simulator parameter solves above-mentioned problems of the prior art.
Summary of the invention
For existing aerostatics laser relay mirror system and the deficiency of emulation technology, the purpose of the present invention is to provide one
Kind aerostatics laser relay mirror system and its simulator and emulation mode.
Technical purpose to realize the present invention, using following technical scheme:
A kind of aerostatics laser relay mirror system, including laser, adaptive optics module, relay lens module and target
Module；Laser and adaptive optics module are placed on ground, and relay lens module is placed on aerostatics；Laser is launched
Laser beam through adaptive optics module realize laser beam purification and correction atmospheric turbulance aberration after emit after pass through
The relay lens module on uplink atmospheric turbulance space propagation to aerostatics on uplink transmission path, the relayed mirror mould of laser beam
Block focus emission passes through the downlink atmospheric turbulance spatial on downlink transmission path to object module after coming out.Define laser light
Beam is uplink transmission path from laser to relay lens module；Relay lens module to object module is downlink transmission path.
The object module is equipped with beacon laser device, rapid for providing uplink and downlink atmosphere to adaptive optics module
The aberration information of stream.Wherein the wavelength of beacon beam light beam caused by beacon laser device is less than laser beam produced by laser
Wavelength.Adaptive optics module includes tilting mirror, wave-front corrector, 1# spectroscope, laser Wavefront sensor, beacon beam wavefront biography
Sensor and wavefront controller.The beacon beam that beacon laser device in object module is launched is arrived through downlink atmospheric turbulance space propagation
Relay lens module is divided by 1# of the uplink atmospheric turbulance space propagation into adaptive optics module again after reaching relay lens module
Light microscopic, beacon optical wavefront sensor receive the beacon beam transmitted from 1# spectroscope；The laser beam of laser transmitting successively passes through certainly
Tilting mirror, wave-front corrector in adaptive optics module are transmitted to 1# spectroscope, and wherein most laser beam is through 1# spectroscope
By uplink atmospheric turbulance space propagation to relay lens module after reflecting, pass through downlink atmospheric turbulance after relayed mirror module
Space propagation is to object module.The fraction laser beam transmitted through spectroscope is received by laser Wavefront sensor, wavefront
Controller obtains total wavefront distortion after laser Wavefront sensor is added with the wave front data that beacon optical wavefront sensor obtains,
Obtaining corresponding phase control signal according to direct slope method, (direct slope method can refer to application number CN201210364084.8's
Patent of invention, title are as follows: a kind of confocal scanning imaging system and its aberration control method), phase controlling signal is applied to
On wave-front corrector, generate and the wavefront controller distortion that total wavefront distortion is calculated is opposite.
Relay lens module includes that 1# is totally reflected recessed hyperbolic mirror, 1# is totally reflected convex hyperbolic mirror, 1# fully-reflected plane mirror, 2#
Fully-reflected plane mirror, 2# are totally reflected convex hyperbolic mirror and 2# is totally reflected recessed hyperbolic mirror.In relay lens module, the biography of beacon beam
The propagation optical path for broadcasting optical path and laser transmitting laser beam is total to optical path.Wherein adaptive optics module transfer is to relay lens module
Laser beam propagation optical path be successively recessed hyperbolic mirror is totally reflected by 1#, 1# is totally reflected convex hyperbolic mirror, 1# total reflection
Plane mirror, 2# fully-reflected plane mirror, 2# are totally reflected convex hyperbolic mirror and 2# is totally reflected recessed hyperbolic mirror.Beacon in object module
The propagation optical path sequence that laser is transmitted to the beacon beam of relay lens module is: light beam successively passes through 2# and is totally reflected recessed hyperboloid
It is complete that mirror, 2# are totally reflected convex hyperbolic mirror, 2# fully-reflected plane mirror, 1# fully-reflected plane mirror, the convex hyperbolic mirror of 1# total reflection and 1#
Reflective concave hyperbolic mirror.Specifically, the Laser beam propagation of adaptive optics module transfer to relay lens module is extremely all-trans by 1#
It penetrates recessed hyperbolic mirror and 1# is totally reflected the off-axis telescopic system progress shrink beam of convex hyperbolic mirror composition.Laser beam after shrink beam
Successively after the fully-reflected plane mirror total reflection that the inclination of 45 degree of two sides is oppositely arranged, it is incident to and convex hyperbolic mirror is totally reflected by 2#
It is exported after being totally reflected the off-axis telescopic system of recessed hyperbolic mirror composition with 2#, the laser beam of output passes through downlink atmospheric turbulance
On space propagation to object module.
The beacon beam that beacon laser device is transmitted to relay lens module in object module, which is transmitted to, is totally reflected convex hyperboloid by 2#
The off-axis telescopic system that mirror and 2# are totally reflected recessed hyperbolic mirror composition carries out shrink beam.Beacon beam after shrink beam is successively by two sides
45 degree tilt be oppositely arranged fully-reflected plane mirror total reflection after, be incident to by 1# be totally reflected recessed hyperbolic mirror and 1# total reflection it is convex
It is exported after the off-axis telescopic system of hyperbolic mirror composition, the beacon beam of output is by uplink atmospheric turbulance space propagation to adaptive
Answer optical module.
The present invention provides a kind of simulator of above-mentioned aerostatics laser relay mirror system, comprising:
Emulation laser, generates laser beam；
Emulation adaptive optics module realizes the function of laser beam purification and correction atmospheric turbulance aberration；
Atmospheric turbulence simulation device generates atmospheric turbulance, simulates uplink atmospheric turbulance space and simulation downlink atmosphere is rapid
Fluid space；
Emulation relay lens module, simulates the relay lens module on aerostatics, realizes laser beam relay transmission；
Emulation object module is made of speckle analysis instrument and beacon laser device, it can be achieved that relay transmission is to object module
Locate the measurement of laser power and the generation of beacon beam.Wherein the wavelength of beacon beam is less than the wave of laser beam produced by laser
It is long.
Atmospheric turbulence simulation device includes uplink atmospheric turbulance generator and downlink atmospheric turbulance generator.Uplink atmosphere is rapid
Flow-generator generates laser beam from the emulation uplink road of adaptive optics module transfer to emulation relay lens module
Simulation uplink atmospheric turbulance space on diameter；Downlink atmospheric turbulance generator generates laser beam from emulation relay lens module
It is transferred to the simulation downlink atmospheric turbulance space on the downlink transmission path of emulation object module.Uplink atmospheric turbulance generator
Many with the adoptable product structure of downlink atmospheric turbulance generator, it is on 07 27th, 2011 that publication date, which such as can be used, public
The number of opening is patent of invention " hot-wind turbulence simulation device " Lai Shixian of CN102135467A.Uplink atmospheric turbulance in the present invention
Generator and downlink atmospheric turbulance generator are all made of device realization, and generation can measure and adjust the big of atmospheric turbulence intensity
Gas turbulent flow.
The structure of adaptive optics module in emulation adaptive optics module and aerostatics laser relay mirror system is former
It manages identical.
A kind of emulation mode of aerostatics relay mirror system simulator is as follows:
(1) parameter information of aerostatics laser relay mirror system to be emulated is determined:
The uplink distance z of relay lens module of the laser on from terrestrial transmission to aerostaticsup；Laser is from aerostatics
Relay lens module transfer to object module downlink transfer distance zdown；Laser center wavelength λ；Laser beam quality β；Swash
Light device emits diameter a；The reception diameter D of relay lens module1；The transmitting diameter D of relay lens module2；Wave-front corrector (distorting lens)
Number of unit Nb；Wavefront sensor sub-aperture number Nh；Atmospheric turbulance coherence length in uplink and downlink transmission path.
(2) simulation parameter of aerostatics laser relay mirror system simulator corresponding with parameter each in step (1) is determined；
(2.1) emulating the laser center wavelength with laser, swashing in aerostatics laser relay mirror system simulator
Light device beam quality and the wave-front corrector number of unit in emulation adaptive optics module, Wavefront sensor sub-aperture number
Mesh is identical as the correspondence parameter in aerostatics relay mirror system to be emulated in step (1).
(2.2) determine that the emulation in aerostatics relay mirror system to be emulated emits diameter and emulation relaying with laser
The transmitting diameter of mirror module.
Set aerostatics laser relay mirror system simulator uplink distance and downlink transfer distance respectively with step
Suddenly in (1) the uplink distance and downlink transfer distance of aerostatics relay mirror system to be emulated ratio, such as 1/1000.Floating
In the central wavelength of emulation laser in device laser relay mirror system simulator and aerostatics relay mirror system to be emulated
Laser center wavelength it is identical.Due to Fresnel number be beam diameter square and optical maser wavelength and transmission range product ratio
Value, reflecting transmission range influences the power of light intensity.Thus it can calculate in aerostatics laser relay mirror system simulator
Emulation emits the transmitting diameter of diameter, emulation relay lens module with laser, so that aerostatics laser relay mirror system emulates
The Fresnel number uplink with aerostatics relay mirror system to be emulated respectively on the uplink transmission path and downlink transmission path of device
Transmission path is identical with Fresnel number on downlink transmission path.
(2.3) it according to beam Propagation rule, focuses the beam diameter being transmitted on relay lens module reception mirror and uplink passes
The beam quality of defeated distance and laser is directly proportional, is inversely proportional with the transmitting diameter of laser, is calculated in aerostatics laser
After the reception diameter of the emulation relay lens module in mirror system emulation device should be aerostatics to be emulated relaying in step (1)
Its relay lens mode beam of mirror system emits the 1/10 of diameter.
(2.4) ratio of the atmospheric turbulance coherence length on beam diameter and transmission path, which reflects atmospheric turbulance, influences light
The power of beam.According to the simulator major parameter that step (2.2) and (2.3) provide, calculate provide simulator uplink, under
Atmospheric turbulance coherence length in row transmission path, so that on simulator and aerostatics relay mirror system transmission path to be emulated
This ratio it is identical.
(2.5) according to beam Propagation rule, under conditions of after atmospheric turbulance is corrected by adaptive optics module completely, meter
It calculates relay lens module and focuses the spot radius for being transmitted to object module；In order to effectively analyze the light in beam Propagation to object module
Spot characteristic, the detector target surface radius of speckle analysis instrument needs to be greater than and is transmitted to target in emulation object module in simulator
2 times of module spot radius.
(3) according to the simulation parameter determined in step (2), corresponding aerostatics relay mirror system simulator is constructed, is opened
The atmospheric turbulance environment for opening atmospheric turbulence simulation device simulation varying strength, is emulated.
Technical effect of the invention:
The present invention has adaptive optics module, can carry out beam cleanup and correction under varying strength atmospheric turbulance
Atmospheric turbulance aberration；And beacon laser device is placed at object module, can provide uplink and downlink to adaptive optics module
The aberration information of atmospheric turbulance.
Its simulator has atmospheric turbulance and adaptive optics module, can carry out under varying strength atmospheric turbulance
The analog simulation of beam cleanup and correction atmospheric turbulance aberration.It simultaneously can be according to wait emulate the Gao Gong with adaptive optics module
Rate relay mirror system parameter is analyzed according to the physics law of adaptive optics and atmospheric optics to determine that simulator is joined
Number.Additionally by simulation run, can examine the matching of parameter between each component part of relay mirror system simulator, optimization and
Balance, can realize the function and performance verification to aerostatics laser relay mirror system in ground experiment room, be the design of system
More complete experiment and test condition are provided.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1.
Fig. 2 is the light path schematic diagram of adaptive optics module in the embodiment of the present invention 2.
Fig. 3 is the light path schematic diagram of relay lens module in the embodiment of the present invention 3.
Fig. 4 is the structural schematic diagram of the embodiment of the present invention 4.
Fig. 5 is the structural schematic diagram of emulation object module in the embodiment of the present invention 5.
Figure label:
1, laser；2, adaptive optics module；3, relay lens module；4, object module；5, aerostatics；6, uplink atmosphere
Turbulent space；7, downlink atmospheric turbulance space；
21, tilting mirror；22, wave-front corrector；23,1# spectroscope；24, laser Wavefront sensor；25, beacon beam wavefront passes
Sensor；26, wavefront controller；
31,1# is totally reflected recessed hyperbolic mirror；32,1# is totally reflected convex hyperbolic mirror；33,1# fully-reflected plane mirror；34,2# is complete
Plane of reflection mirror；35,2# is totally reflected convex hyperbolic mirror；46,2# is totally reflected recessed hyperbolic mirror；
1 ', laser is used in emulation；2 ', emulation adaptive optics module；3 ', emulation relay lens module；4 ', emulation is used
Object module；6 ', uplink atmospheric turbulance space is simulated；7 ', downlink atmospheric turbulance space is simulated；
41 ', speckle analysis instrument, 42 ', beacon laser device.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
It referring to Fig.1, is the structural schematic diagram of the embodiment of the present invention 1, a kind of aerostatics laser relay mirror system, including laser
Device 1, adaptive optics module 2, relay lens module 3 and object module 4；Laser 1 and adaptive optics module 2 are placed on
Ground, relay lens module 3 are placed on aerostatics 5；The laser beam that laser 1 is launched is realized through adaptive optics module 2
It is empty by the uplink atmospheric turbulance on uplink transmission path after being emitted after laser beam purification and correction atmospheric turbulance aberration
Between 6 be transmitted to relay lens module 3 on aerostatics 5, relayed 3 focus emission of mirror module of laser beam come out after by downlink biography
Downlink atmospheric turbulance space 7 on defeated path travels to object module 4.Laser beam, which is defined, from laser to relay lens module is
Uplink transmission path；Relay lens module to object module is downlink transmission path.
The object module 4 is equipped with beacon laser device.Wherein the wavelength of beacon beam light beam is less than produced by laser and swashs
The wavelength of light light beam.
Fig. 2 is the light path schematic diagram of adaptive optics module in the embodiment of the present invention 2.Adaptive optics module includes inclination
Mirror 21, wave-front corrector 22,1# spectroscope 23, laser Wavefront sensor 24, beacon optical wavefront sensor 25 and wavefront controller
26.The beacon beam that beacon laser device in object module 4 is launched is transferred to relay lens module 3 through downlink atmospheric turbulance space 7,
The 1# spectroscope 23 in adaptive optics module 2 is transmitted to by uplink atmospheric turbulance space 6 again after reaching relay lens module 3,
Beacon optical wavefront sensor 25 receives the beacon beam transmitted from 1# spectroscope 23；The laser beam that laser 1 emits is through adaptive
Tilting mirror 21, wave-front corrector 22 in optical module 2 are transmitted to 1# spectroscope 23, and wherein most laser beam is divided through 1#
Mirror 23 reflects rear uplink atmospheric turbulance space 6 and is transmitted to relay lens module 3, passes through downlink atmosphere after relayed mirror module 3
Turbulent space 7 is transferred to object module 4.The fraction laser beam transmitted through spectroscope 23 is by laser Wavefront sensor 24
It receives, wavefront controller 26 obtains after laser Wavefront sensor 24 is added with the wave front data that beacon optical wavefront sensor 25 obtains
To total wavefront distortion, obtaining corresponding phase control signal according to direct slope method, (direct slope method can refer to application number
The patent of invention of CN201210364084.8, title are as follows: a kind of confocal scanning imaging system and its aberration control method), by phase
Position controls signal processed and is applied on wave-front corrector 22, generates that total wavefront distortion is calculated with wavefront controller 26 is opposite
Distortion.
Fig. 3 is the relay lens module light path schematic diagram in the embodiment of the present invention 3, and relay lens module 3 includes that 1# total reflection is recessed
Hyperbolic mirror 31, the convex hyperbolic mirror 32 of 1# total reflection, 1# fully-reflected plane mirror 33,2# fully-reflected plane mirror 34,2# total reflection are convex
Hyperbolic mirror 35 and 2# are totally reflected recessed hyperbolic mirror 36.In relay lens module 3, the propagation optical path and laser of beacon beam emit
The propagation optical path of laser beam is total to optical path.Wherein adaptive optics module 2 is transmitted to the propagation of the laser beam of relay lens module 3
Optical path sequence is: light beam is totally reflected recessed hyperbolic mirror 31 by 1#, 1# is totally reflected convex hyperbolic mirror 32,1# fully-reflected plane mirror
33,2# fully-reflected plane mirror 34,2# are totally reflected convex hyperbolic mirror 35 and 2# is totally reflected recessed hyperbolic mirror 36.Believe in object module 4
The propagation optical path sequence that mark laser is transmitted to the beacon beam of relay lens module 3 is: light beam is totally reflected recessed hyperbolic mirror by 2#
36,2# is totally reflected convex hyperbolic mirror 35,2# fully-reflected plane mirror 34,1# fully-reflected plane mirror 33,1# and is totally reflected convex hyperbolic mirror
32 and 1# is totally reflected recessed hyperbolic mirror 31.Specifically, adaptive optics module 2 is transmitted to the laser beam of relay lens module 3, passes
It transports to and recessed hyperbolic mirror 31 is totally reflected by 1# and 1# is totally reflected the off-axis telescopic system that convex hyperbolic mirror 32 forms and carries out shrink beam.
Laser beam after shrink beam successively after the fully-reflected plane mirror total reflection that the inclination of 45 degree of two sides is oppositely arranged, is incident to by 2#
Be totally reflected convex hyperbolic mirror 35 and 2# be totally reflected the off-axis telescopic system that recessed hyperbolic mirror 36 forms after export, the laser of output
Light beam is transmitted in object module 4 by downlink atmospheric turbulance space 7.
Beacon laser device is transmitted to the beacon beam of relay lens module 3 in object module 4, is transmitted to and is totally reflected convex hyperbolic by 2#
Face mirror 35 and 2# are totally reflected the off-axis telescopic system that recessed hyperbolic mirror 36 forms and carry out shrink beam.Beacon beam after shrink beam successively passes through
After crossing the fully-reflected plane mirror total reflection that the inclination of 45 degree of two sides is oppositely arranged, it is incident to and recessed hyperbolic mirror 31 and 1# is totally reflected by 1#
It is exported after being totally reflected the off-axis telescopic system that convex hyperbolic mirror 32 forms, the beacon beam of output passes through uplink atmospheric turbulance space
6 are transmitted to adaptive optics module 2.
It is the structural schematic diagram of the embodiment of the present invention 4 referring to Fig. 4.Embodiment 4 provides a kind of above-mentioned aerostatics laser relaying
The simulator of mirror system, comprising:
Emulation laser 1 ', generates laser beam.
Emulation adaptive optics module 2 ' realizes the function of laser beam purification and correction atmospheric turbulance aberration.
Atmospheric turbulence simulation device generates atmospheric turbulance, simulates uplink atmospheric turbulance space 6 ' and simulation downlink atmosphere
Turbulent space 7 '.
Emulation relay lens module 3 ', simulates the relay lens module on aerostatics, realizes laser beam relay transmission.
Emulation object module 4 ', be made of speckle analysis instrument 41 ' and beacon laser device 42 ', it can be achieved that relay transmission extremely
The measurement of laser power and the generation of beacon beam at object module.Wherein the wavelength of beacon beam light beam is less than produced by laser
The wavelength of laser beam.
Atmospheric turbulence simulation device includes uplink atmospheric turbulance generator and downlink atmospheric turbulance generator.Uplink atmosphere is rapid
Flow-generator generates laser beam from the emulation uplink road of adaptive optics module transfer to emulation relay lens module
Simulation uplink atmospheric turbulance space on diameter；Downlink atmospheric turbulance generator generates laser beam from emulation relay lens module
It is transferred to the simulation downlink atmospheric turbulance space on the downlink transmission path of emulation object module.Uplink atmospheric turbulance generator
It is many with the adoptable product structure of downlink atmospheric turbulance generator.It is on 07 27th, 2011 that publication date, which such as can be used, open
Number be CN102135467A patent of invention " hot-wind turbulence simulation device " Lai Shixian.Uplink atmospheric turbulance hair in the present invention
Raw device and downlink atmospheric turbulance generator are all made of device realization, generate the atmosphere that can measure and adjust atmospheric turbulence intensity
Turbulent flow.
The structure of adaptive optics module 2 in emulation adaptive optics module 2 ' and aerostatics laser relay mirror system
Principle is identical.The light path schematic diagram of emulation adaptive optics module 2 ' is as shown in Figure 2.Emulation is same with adaptive optics module 2 '
Sample includes tilting mirror 21, wave-front corrector 22,1# spectroscope 23, laser Wavefront sensor 24,25 and of beacon optical wavefront sensor
Wavefront controller 26.The beacon beam that beacon laser device 42 of the emulation in object module 4 ' is launched is through simulating downlink atmospheric turbulance
Space 7 ' is transferred to emulation relay lens module 3 ', passes through simulation uplink atmospheric turbulance again after reaching emulation relay lens module 3 '
Space 6 ' is transmitted to the 1# spectroscope 23 in emulation adaptive optics module 2 ', and beacon optical wavefront sensor 25 is received from 1# points
The beacon beam that light microscopic 23 transmits；The laser beam that emulation is emitted with laser 1 ' is successively through in emulation adaptive optics module 2 '
Tilting mirror 21, wave-front corrector 22 be transmitted to 1# spectroscope 23, wherein most laser beam is reflected through 1# spectroscope 23
It is transmitted to emulation relay lens module 3 ' by simulating uplink atmospheric turbulance space 6 ' after coming, after emulation relay lens module 3 '
Emulation object module 4 ' is transferred to by simulating downlink atmospheric turbulance space 7 '.The fraction transmitted through spectroscope 23 swashs
Light light beam is received by laser Wavefront sensor 24, and wavefront controller 26 is laser Wavefront sensor 24 and beacon optical wavefront sensor
25 obtained wave front datas obtain total wavefront distortion after being added, and obtain corresponding phase control signal according to direct slope method
(direct slope method can refer to the patent of invention of application number CN201210364084.8, title are as follows: a kind of confocal scanning imaging system
And its aberration control method), phase controlling signal is applied on wave-front corrector 22, generates and is calculated with wavefront controller 26
Obtain the opposite distortion of total wavefront distortion.
The emulation structural principle phase of relay lens module 3 ' and the relay lens module 3 in aerostatics laser relay mirror system
Together.The light path schematic diagram of emulation relay lens module 3 ' is as shown in Figure 3.Emulation equally includes that 1# is totally reflected with relay lens module 3 '
Recessed hyperbolic mirror 31,1# are totally reflected convex hyperbolic mirror 32,1# fully-reflected plane mirror 33,2# fully-reflected plane mirror 34,2# total reflection
Convex hyperbolic mirror 35 and 2# are totally reflected recessed hyperbolic mirror 36.In emulation in relay lens module 3 ', the propagation optical path of beacon beam with
The propagation optical path of laser transmitting laser beam is total to optical path.Wherein emulation is transmitted to emulation relaying with adaptive optics module 2 '
The propagation optical path sequence of the laser beam of mirror module 3 ' is: light beam is totally reflected recessed hyperbolic mirror 31, convex pair of 1# total reflection by 1#
Curved mirror 32,1# fully-reflected plane mirror 33,2# fully-reflected plane mirror 34,2# are totally reflected convex hyperbolic mirror 35 and 2# total reflection is recessed double
Curved mirror 36.Emulation is transmitted to the propagation light of the beacon beam of emulation relay lens module 3 ' with beacon laser device in object module 4 '
Road sequence is: light beam is totally reflected recessed hyperbolic mirror 36 by 2#, 2# is totally reflected convex hyperbolic mirror 35,2# fully-reflected plane mirror 34,
1# fully-reflected plane mirror 33,1# are totally reflected convex hyperbolic mirror 32 and 1# is totally reflected recessed hyperbolic mirror 31.Specifically, it emulates with adaptive
It answers optical module 2 ' to be transmitted to the laser beam of emulation relay lens module 3 ', is transmitted to and recessed 31 He of hyperbolic mirror is totally reflected by 1#
1# is totally reflected the off-axis telescopic system that convex hyperbolic mirror 32 forms and carries out shrink beam.Laser beam after shrink beam is successively by two sides
After 45 degree tilt the fully-reflected plane mirror total reflection being oppositely arranged, it is incident to and convex hyperbolic mirror 35 and 2# total reflection is totally reflected by 2#
It is exported after the off-axis telescopic system that recessed hyperbolic mirror 36 forms, the laser beam of output is passed by downlink atmospheric turbulance space 7
It transports on the speckle analysis instrument 41 ' in emulation object module 4 ', speckle analysis instrument 41 ' is used to measure to be transmitted to emulation target
The space-time characterisation of light beam in module 4 '.
Emulation is transmitted to emulation with beacon laser device 42 ' in object module 4 ' and is transmitted to the beacon beam of relay lens module 3 '
Convex hyperbolic mirror 35 is totally reflected by 2# and 2# is totally reflected the off-axis telescopic system that recessed hyperbolic mirror 36 forms and carries out shrink beam.Shrink beam
Beacon beam afterwards successively after the fully-reflected plane mirror total reflection that the inclination of 45 degree of two sides is oppositely arranged, is incident to and is totally reflected by 1#
Recessed hyperbolic mirror 31 and 1# are exported after being totally reflected the off-axis telescopic system that convex hyperbolic mirror 32 forms, and the beacon beam of output passes through
Simulation uplink atmospheric turbulance space 6 ' is transmitted to emulation adaptive optics module 2 '.
A kind of emulation mode of aerostatics relay mirror system simulator is as follows:
(1) parameter information of aerostatics laser relay mirror system to be emulated is determined:
The uplink distance z of relay lens module of the laser on from terrestrial transmission to aerostaticsup；Laser is from aerostatics
Relay lens module transfer to object module downlink transfer distance zdown；Laser center wavelength λ；Laser beam quality β；Swash
Light device emits diameter a；The reception diameter D of relay lens module1；The transmitting diameter D of relay lens module2；Wave-front corrector (distorting lens)
Number of unit Nb；Wavefront sensor sub-aperture number Nh；Atmospheric turbulance coherence length in uplink and downlink transmission path.
The parameter information of aerostatics laser relay mirror system to be emulated is as shown in table 1 in the present embodiment:
Table 1
(2) simulation parameter of aerostatics laser relay mirror system simulator corresponding with parameter each in step (1) is determined；
(2.1) laser center wavelength in aerostatics laser relay mirror system simulator, laser beam quality, wave
Preceding corrector number of unit, Wavefront sensor sub-aperture number are and in aerostatics relay mirror system to be emulated in step (1)
Corresponding parameter is identical.
(2.2) transmitting of the laser transmitting diameter in aerostatics relay mirror system to be emulated and relay lens module is determined
Diameter.
Set aerostatics laser relay mirror system simulator uplink distance and downlink transfer distance respectively with step
Suddenly in (1) the uplink distance and downlink transfer distance of aerostatics relay mirror system to be emulated ratio, such as 1/1000.Floating
The laser in laser center wavelength and aerostatics relay mirror system to be emulated in device laser relay mirror system simulator
Central wavelength is identical.Fresnel number is the ratio square with optical maser wavelength and transmission range product of beam diameter, reflects biography
Defeated distance influences the power of light intensity.Thus the laser transmitting that can be calculated in aerostatics laser relay mirror system simulator is straight
The transmitting diameter of diameter, relay lens module, so that the uplink transmission path and downlink of aerostatics laser relay mirror system simulator
Fresnel number is respectively and on the uplink transmission path and downlink transmission path of aerostatics relay mirror system to be emulated in transmission path
Fresnel number is identical.
(2.3) it according to beam Propagation rule, focuses the beam diameter being transmitted on relay lens module reception mirror and uplink passes
The beam quality of defeated distance and laser is directly proportional, is inversely proportional with the transmitting diameter of laser, is calculated in aerostatics laser
After the reception diameter of the relay lens module in mirror system emulation device should be aerostatics relay mirror system to be emulated in step (1)
The 1/10 of the transmitting diameter of its relay lens module.
(2.4) ratio of the atmospheric turbulance coherence length on beam diameter and transmission path, which reflects atmospheric turbulance, influences light
The power of beam.The simulator major parameter provided according to step 2 and 3 calculates uplink, the downlink transfer road for providing simulator
Atmospheric turbulance coherence length on diameter, so that this ratio on simulator and true aerostatics relay mirror system transmission path
It is identical.
(2.5) it is calculated under conditions of atmospheric turbulance is corrected by adaptive optics module completely according to beam Propagation rule
Relay lens module focuses the spot radius for being transmitted to object module；In order to effectively analyze the hot spot in beam Propagation to object module
Characteristic, emulation needs 2 greater than spot radius with the detector target surface radius of speckle analysis instrument in object module in simulator
Times, it needs to be greater than 2.6mm so detector target surface radius is calculated.
Using step (2.1) to (2.5), determining simulation parameter is as shown in table 2:
Table 2
(3) according to the simulation parameter determined in step (2), corresponding aerostatics relay mirror system simulator is constructed, is opened
The atmospheric turbulance environment for opening atmospheric turbulence simulation device simulation varying strength, is emulated.
The foregoing is merely a preferred embodiment of the present invention, are not intended to restrict the invention, for this field
For technical staff, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of aerostatics laser relay mirror system, it is characterised in that: including laser, adaptive optics module, relay lens mould
Block and object module；Laser and adaptive optics module are placed on ground, and relay lens module is placed on aerostatics；Swash
The laser beam that light device is launched leads to after adaptive optics module realizes laser beam purification and correction atmospheric turbulance aberration
Cross the relay lens module on the uplink atmospheric turbulance space propagation to aerostatics on uplink transmission path, the relayed mirror of laser beam
Module focus emission passes through the downlink atmospheric turbulance spatial on downlink transmission path to object module after coming out.
2. aerostatics laser relay mirror system according to claim 1, it is characterised in that: the object module is equipped with letter
Laser is marked, for providing the aberration information of uplink and downlink atmospheric turbulance to adaptive optics module；Wherein beacon beam light beam
Wavelength be less than laser produced by laser beam wavelength.
3. aerostatics laser relay mirror system according to claim 2, it is characterised in that: adaptive optics module includes inclining
Oblique mirror, wave-front corrector, 1# spectroscope, laser Wavefront sensor, beacon optical wavefront sensor and wavefront controller；Object module
On the beacon beam launched of beacon laser device through downlink atmospheric turbulance space propagation to relay lens module, reach relay lens module
Afterwards again by 1# spectroscope of the uplink atmospheric turbulance space propagation into adaptive optics module, beacon optical wavefront sensor is received
The beacon beam transmitted from 1# spectroscope；The laser beam of laser transmitting is successively through tilting mirror, the wave in adaptive optics module
Preceding corrector is transmitted to 1# spectroscope, and wherein most laser beam passes through uplink atmospheric turbulance after 1# spectroscope reflects
Space propagation passes through downlink atmospheric turbulance space propagation to object module to relay lens module after relayed mirror module；Through being divided
The fraction laser beam that mirror transmits is received by laser Wavefront sensor, and wavefront controller is laser Wavefront sensor and letter
The wave front data that mark optical wavefront sensor obtains obtains total wavefront distortion after being added, and obtains corresponding phase according to direct slope method
Position control signal, phase controlling signal is applied on wave-front corrector, generates and total wave is calculated with wavefront controller
The opposite distortion of front-distortion.
4. aerostatics laser relay mirror system according to claim 3, it is characterised in that: relay lens module includes that 1# is all-trans
Penetrate recessed hyperbolic mirror, 1# is totally reflected convex hyperbolic mirror, 1# fully-reflected plane mirror, 2# fully-reflected plane mirror, 2# are totally reflected convex hyperbolic
Face mirror and 2# are totally reflected recessed hyperbolic mirror；In relay lens module, the propagation optical path and laser of beacon beam emit laser beam
Propagation optical path be total to optical path；Wherein the propagation optical path of laser beam of adaptive optics module transfer to relay lens module is successively
It is complete that recessed hyperbolic mirror, the convex hyperbolic mirror of 1# total reflection, 1# fully-reflected plane mirror, 2# fully-reflected plane mirror, 2# are totally reflected by 1#
It reflects convex hyperbolic mirror and 2# is totally reflected recessed hyperbolic mirror；Beacon laser device in object module is transmitted to the letter of relay lens module
The propagation optical path sequence for marking light is: light beam is totally reflected recessed hyperbolic mirror by 2#, 2# is totally reflected convex hyperbolic mirror, 2# total reflection is flat
Face mirror, 1# fully-reflected plane mirror, 1# are totally reflected convex hyperbolic mirror and 1# is totally reflected recessed hyperbolic mirror.
5. aerostatics laser relay mirror system according to claim 4, it is characterised in that: adaptive optics module transfer is extremely
The Laser beam propagation of relay lens module to recessed hyperbolic mirror is totally reflected by 1# and 1# be totally reflected convex hyperbolic mirror form it is off-axis
Telescopic system carries out shrink beam；The fully-reflected plane mirror that laser beam after shrink beam is successively oppositely arranged by the inclination of 45 degree of two sides
After total reflection, it is incident to and convex hyperbolic mirror is totally reflected by 2# and after 2# is totally reflected the off-axis telescopic system that recessed hyperbolic mirror forms
The laser beam of output, output passes through on downlink atmospheric turbulance space propagation to object module；
The beacon beam that beacon laser device is transmitted to relay lens module in object module be transmitted to by 2# be totally reflected convex hyperbolic mirror and
The off-axis telescopic system that 2# is totally reflected recessed hyperbolic mirror composition carries out shrink beam；Beacon beam after shrink beam is successively by 45 degree of two sides
After tilting the fully-reflected plane mirror total reflection being oppositely arranged, it is incident to and recessed hyperbolic mirror and the convex hyperbolic of 1# total reflection is totally reflected by 1#
Face microscope group at off-axis telescopic system after export, the beacon beam of output passes through uplink atmospheric turbulance space propagation to adaptive optical
Learn module.
6. the simulator of aerostatics laser relay mirror system as described in claim 1 characterized by comprising
Emulation laser, generates laser beam；
Emulation adaptive optics module realizes the function of laser beam purification and correction atmospheric turbulance aberration；
Atmospheric turbulence simulation device generates atmospheric turbulance, simulates uplink atmospheric turbulance space and simulation downlink atmospheric turbulance is empty
Between；
Emulation relay lens module, simulates the relay lens module on aerostatics, realizes laser beam relay transmission；
Emulation object module, is made of speckle analysis instrument and beacon laser device, it can be achieved that swashing at relay transmission to object module
The measurement of optical power and the generation of beacon beam.Wherein the wavelength of beacon beam light beam is less than the wave of laser beam produced by laser
It is long.
7. simulator according to claim 6, which is characterized in that atmospheric turbulence simulation device includes uplink atmospheric turbulance
Generator and downlink atmospheric turbulance generator, uplink atmospheric turbulance generator generate laser beam from emulation adaptive optics
Simulation uplink atmospheric turbulance space on module transfer to the uplink transmission path of emulation relay lens module；Downlink atmospheric turbulance
Generator generates laser beam from the mould on the downlink transmission path of emulation relay lens module transfer to emulation object module
Quasi- downlink atmospheric turbulance space.
8. simulator according to claim 6, which is characterized in that emulation adaptive optics module include tilting mirror,
Wave-front corrector, 1# spectroscope, laser Wavefront sensor, beacon optical wavefront sensor and wavefront controller；Emulation target mould
The beacon beam that beacon laser device on block is launched, to emulation relay lens module, is arrived through simulation downlink atmospheric turbulance space propagation
Again by simulation uplink atmospheric turbulance space propagation into emulation adaptive optics module after up to emulation relay lens module
1# spectroscope, beacon optical wavefront sensor receive the beacon beam transmitted from 1# spectroscope；The laser light that emulation is emitted with laser
Shu Yici, which is emulated, is transmitted to 1# spectroscope with tilting mirror, the wave-front corrector in adaptive optics module, and wherein most swashs
Light light beam is after 1# spectroscope reflects by simulating uplink atmospheric turbulance space propagation to emulation relay lens module, through imitative
Very with passing through simulation downlink atmospheric turbulance space propagation after relay lens module to emulation object module；It is transmitted through spectroscope
Fraction laser beam received by laser Wavefront sensor, wavefront controller passes laser Wavefront sensor and beacon beam wavefront
The wave front data that sensor obtains obtains total wavefront distortion after being added, and obtains corresponding phase controlling according to direct slope method and believes
Number, phase controlling signal is applied on wave-front corrector, generates and total wavefront distortion phase is calculated with wavefront controller
Anti- distortion.
9. simulator according to claim 8, which is characterized in that emulation relay lens module includes that 1# total reflection is recessed double
Curved mirror, 1# be totally reflected convex hyperbolic mirror, 1# fully-reflected plane mirror, 2# fully-reflected plane mirror, 2# be totally reflected convex hyperbolic mirror and
2# is totally reflected recessed hyperbolic mirror；In emulation in relay lens module, the propagation optical path and laser of beacon beam emit laser beam
Propagation optical path be total to optical path；The wherein biography of the emulation laser beam of adaptive optics module transfer to emulation relay lens module
Broadcasting optical path sequence is: light beam is totally reflected recessed hyperbolic mirror by 1#, 1# is totally reflected convex hyperbolic mirror, 1# fully-reflected plane mirror, 2#
Fully-reflected plane mirror, 2# are totally reflected convex hyperbolic mirror and 2# is totally reflected recessed hyperbolic mirror；Beacon laser in emulation object module
The propagation optical path sequence that device is transmitted to the beacon beam of emulation relay lens module is: light beam by 2# be totally reflected recessed hyperbolic mirror,
2# is totally reflected convex hyperbolic mirror, 2# fully-reflected plane mirror, 1# fully-reflected plane mirror, 1# and is totally reflected convex hyperbolic mirror and 1# total reflection
Recessed hyperbolic mirror.
10. a kind of emulation mode of aerostatics relay mirror system simulator, which is characterized in that steps are as follows:
(1) parameter information of aerostatics laser relay mirror system to be emulated is determined:
The uplink distance z of relay lens module of the laser on from terrestrial transmission to aerostaticsup；Laser is from the relaying on aerostatics
Mirror module transfer to object module downlink transfer distance zdown；Laser center wavelength λ；Laser beam quality β；Laser
Emit diameter a；The reception diameter D of relay lens module1；The transmitting diameter D of relay lens module2；Wave-front corrector number of unit Nb；
Wavefront sensor sub-aperture number Nh；Atmospheric turbulance coherence length in uplink and downlink transmission path；
(2) simulation parameter of aerostatics laser relay mirror system simulator corresponding with parameter each in step (1) is determined；
(2.1) laser center wavelength, the laser of laser of the emulation in aerostatics laser relay mirror system simulator
Beam quality and emulation use wave-front corrector number of unit, Wavefront sensor sub-aperture number in adaptive optics module equal
It is identical as the correspondence parameter in aerostatics relay mirror system to be emulated in step (1)；
(2.2) determine that the emulation in aerostatics relay mirror system to be emulated emits diameter and emulation relay lens mould with laser
The transmitting diameter of block；
Set aerostatics laser relay mirror system simulator uplink distance and downlink transfer distance respectively with step (1)
In the uplink distance of aerostatics relay mirror system to be emulated and the ratio of downlink transfer distance；Aerostatics laser relay lens system
Laser center wavelength in system simulator is identical as the laser center wavelength in aerostatics relay mirror system to be emulated；By
This can calculate the emulation in aerostatics laser relay mirror system simulator and emit diameter, emulation relay lens mould with laser
The transmitting diameter of block, so that luxuriant and rich with fragrance on the uplink transmission path and downlink transmission path of aerostatics laser relay mirror system simulator
Nie Er number is identical as Fresnel number on the uplink transmission path and downlink transmission path of aerostatics relay mirror system to be emulated respectively；
(2.3) the reception diameter of emulation relay lens module is its relay lens of aerostatics relay mirror system to be emulated in step (1)
Mode beam emits the 1/10 of diameter；
(2.4) ratio of the atmospheric turbulance coherence length on beam diameter and transmission path, which reflects atmospheric turbulance, influences light beam
It is strong and weak；According to the simulator major parameter that step (2.2) and (2.3) obtain, the uplink for providing simulator is calculated, downlink passes
Atmospheric turbulance coherence length on defeated path, so that this on simulator and aerostatics relay mirror system transmission path to be emulated
A ratio is identical；
(2.5) the detector target surface radius needs of speckle analysis instrument are imitative greater than being transmitted in emulation object module in simulator
True 2 times for using object module spot radius；
(3) according to the simulation parameter determined in step (2), corresponding aerostatics relay mirror system simulator is constructed, is opened big
Gas turbulent flow simulation device simulates the atmospheric turbulance environment of varying strength, is emulated.
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