CN105137416B - A kind of EO-1 hyperion laser radar target sample experimental rig and method - Google Patents
A kind of EO-1 hyperion laser radar target sample experimental rig and method Download PDFInfo
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- CN105137416B CN105137416B CN201510591715.3A CN201510591715A CN105137416B CN 105137416 B CN105137416 B CN 105137416B CN 201510591715 A CN201510591715 A CN 201510591715A CN 105137416 B CN105137416 B CN 105137416B
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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
- G01S7/497—Means for monitoring or calibrating
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Abstract
The invention discloses a kind of EO-1 hyperion laser radar target sample experimental rig and methods comprising：Pulsed super continuous spectrums laser light source；Lasing light emitter two dimension angle station；The adjustable electricity of the angle of divergence adjusts collimator；Micro-structure crystal optical fibre；Loading turntable；Detector angle station；It is fixed on the echo collection device of detector carriage upper end；Detection device；Connect lasing light emitter two dimension angle station, electricity adjusts collimator, the control centre of detector angle station, loading turntable, detection device.The spectrum multi-angle information of target sample echo, can be used for scattering and Research of radiation characteristics of the target sample to super continuous spectrums pulse laser under the conditions of the present invention can automatically and rapidly measure pulsed wide spectrum laser acquisition in hemispherical space.
Description
Technical field
The present invention relates to remote sensing fields, more particularly to a kind of EO-1 hyperion laser radar target sample experimental rig and side
Method.
Background technology
There are three types of forms for reflection of the body surface to electromagnetic wave：Mirror-reflection, diffusing reflection and direction reflection.Mirror-reflection refers to
Angle of reflection is equal to incidence angle, and reflection energy concentration is in one direction；Diffusing reflection refer to whole surface all equably to it is each to reflect into
Penetrate light；Direction is reflected between diffusing reflection and mirror-reflection, respectively to there is reflection, but it is respectively inhomogenous to reflected intensity.
Actually most natural surfaces are all rough surface for the wavelength of radiation.When the surface of object is thick enough
It is rough so that it to the reflected radiation brightness of solar shortwave radiation in 2 spaces π with the center of object be in constant, i.e., instead
It penetrates radiance with observation angle not become, our objects are referred to as diffuse reflector, also known as lambert's body.Diffusing reflection is also known as lambert
(Lambert) it reflects, also referred to as isotropism reflects.Reflection is known as direction reflection between diffusing reflection and mirror-reflection, also referred to as
Non-lambertian reflects.The object for generating direction reflection accounts for the overwhelming majority in nature, i.e., they have the scattering of solar radiation
Anisotropic properties.When remote sensing application enters the quantitative remote sensing stage, we must abandon the hypothesis of " target is lambert's body ".At present
Major applications also all use lambert approximate.The reflection of description direction cannot be stated simply with reflectivity, because of the reflection of all directions
Rate is all different.For target, that is, Non Lambert reflector of remote sensing application, it to the reflection of the sun/radiation of light source, scattering power not
Only become with wavelength, while also becoming with direction in space.
The Spectral Characteristic of target sample refers to the rule that the atural object becomes the reflection of light source, scattering power with wavelength.Ground
The structural relation of the composition of object wave spectrum signature and atural object, interior of articles is close, popular to say ground-object spectrum feature namely
The color characteristic of object.The Spectral Characteristic of target sample refers to the measured value under specific incident angle and observation angle, including its
The two elements of the Spectral Characteristic and its spatial structure characteristic of material.
And the direction character of target sample is become in director space to light source reflection, scattering power for describing target sample
Change, this Spatial Variation depends mainly on two kinds of factors, one is the surface roughness of object, it depends not only on table
Proportionate relationship between face average roughness height value and electromagnetic wavelength, but also it is in close relations with visual angle.
The light source of EO-1 hyperion laser radar is the pulse laser of wide range, for comparing the spectrum that transmission spectra instrument measures,
The time of integration is extremely short, and spectral measurement needs rise time extremely short photoelectric device.201110178750.4 He of patent
200910243719.7 are measured with the equipment of the multi-angle information of the atural object of sunlight radiant, and pulse laser thunder is not suitable for
The application reached.In order to study application of the EO-1 hyperion laser radar in vegetation biochemical component and structural parameters detection, it is necessary to grind
The spectrum multi-angle information of target sample is studied carefully, to realize the accurately detecting to the structure and biochemical component information of complicated vegetation.
Invention content
(1) technical problems to be solved
The technical problem to be solved in the present invention is to provide a kind of EO-1 hyperion laser radar target sample experimental rig and method,
The spectrum multi-angle under pulsed laser light source irradiation for experimental study target sample, which is believed, to be suffered from, to be wide range pulse laser
The scattering section of radar calculates, and the accurately detecting of structure and biochemical component information to complicated vegetation provides basic data.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of EO-1 hyperion laser radar target sample experimental rig,
It includes：
Pulsed super continuous spectrums laser light source；Lasing light emitter two dimension angle station；The adjustable electricity of the angle of divergence adjusts collimator；Connection
Pulsed super continuous spectrums laser light source and electricity adjust the micro-structure crystal optical fibre of collimator；Loading turntable；Detector angle station；Gu
It is scheduled on the echo collection device of detector carriage upper end；Detection device；Connect lasing light emitter two dimension angle station, electricity adjusts collimator,
The control centre of detector angle station, loading turntable, detection device；
As a preferred embodiment of the above technical solution, lasing light emitter two dimension angle station includes that light source levels turntable, light source turn vertically
Platform, horizontal stand and vertical rack；
As a preferred embodiment of the above technical solution, electricity tune collimator is fixed on the vertical branch of the lasing light emitter two dimension angle station
The upper end of frame,
As a preferred embodiment of the above technical solution, loading turntable is installed on the top of light source levels turntable in horizontal direction, packet
The sample carrying disk for including loading electric rotary table and being fixed on loading electric rotary table.
As a preferred embodiment of the above technical solution, detector angle station includes detecting vertical turntable and being installed on detection vertically
Telescopic detector carriage on turntable, the scalable detector carriage use sliding block guide track structure, for adjusting detection
Visual field.
As a preferred embodiment of the above technical solution, echo collection device include lens barrel, lens barrel front end installation quartzy lenticular
The adjustable focusing back of mirror, front and back position, light harvesting optical fiber, one end of the light harvesting optical fiber are connected to the center for focusing back, should
Center is also detection target simultaneously into image focus.
As a preferred embodiment of the above technical solution, detection device includes optical fiber connector, converges eyeglass, reflecting grating, convergence
Speculum, diaphragm, the adjustable 32 yuan of linear arrays photomultiplier tube array sensor assembly in position, sensor drive driving circuit, switching are opened
It closes, data collector, the other end of the optical fiber connector connection light harvesting optical fiber, the sensor drive driving circuit connects 32 yuan
Linear array photomultiplier tube array, the adjustable 32 yuan of linear arrays photomultiplier tube array sensor assembly in position includes one-dimensional translation
Platform, with dove tail installation sensor moving component, 32 yuan of linear array photomultiplier tube arrays on moving component；
Detection device further includes individually emitting sampling detecting module all the way, including the micro- sampling mirror of plated film, fiber adapter, quartz material
Sampling optical fiber, fiber bench, sampling detector, the output of sampling detector is directly inputted in data collector.
As a preferred embodiment of the above technical solution, experimental rig further includes diffusing reflection reference white plate.
As a preferred embodiment of the above technical solution, in lasing light emitter two dimension angle station, loading turntable, detector angle station
It is fitted with absolute value encoder on 4 driving motors.
The test method of the present invention is divided into following steps：
S1：Control system resets, and lasing light emitter two dimension angle station, loading turntable, detector angle station read encoder
Location information, through control system relatively after, move to the initial position of setting；According to sample feature, electric adjustable economize on electricity is harmonized straight
The angle of divergence of device, and adjust the length of detector carriage manually and focus the position of back, determine the field angle of observation；
S2：According to test requirements document, light source and the azimuth of detector and the range of zenith angle are set in control centre
And measurement interval angle；
S3：Place reference white plate on loading turntable, experimental rig automatic running, measuring gage orientation and zenith angle
The spectrum multi-angle information of blank, in each measurement position, control centre sends the switching switch in instruction control detection device,
The photosignal incoming data collector in selected channel is measured；
S4：The drop target sample on loading turntable, experimental rig automatic running, measuring gage orientation and zenith angle
The spectrum multi-angle information of target sample, in each measurement position, control centre sends the switching in instruction control detection device
Switch, the photosignal incoming data collector in selected channel is measured；
S5：The signal that control software automatically obtains S3 and S4 steps carries out Gauss curve fitting, obtains the value on Gauss vertex；
S6：Control software is according to bidirectional reflectance because subformula calculates spectrum multi-angle information.
(3) advantageous effect
A kind of EO-1 hyperion laser radar target sample experimental rig and method that above-mentioned technical proposal is provided, which can
With the spectrum multi-angle information of automatic measurement target sample.Light source of the present invention uses the pulsed laser light source of wide range, compared to tradition
Solar source and other analog light sources, more meet the light source irradiation condition of EO-1 hyperion laser radar.The angle of divergence of the present invention can
The electricity of tune adjusts collimator that can adjust the size of laser footprint, coordinates telescopic detector carriage and adjustable focusing back
Observation field angle can be adjusted, the requirement for different target atural object realizes that the spectrum multi-angle information under different investigative ranges is surveyed
Amount.In addition, the relative position by adjusting 32 yuan of linear array photomultiplier tube array sensor assemblies, can correspond to different spectrum
Range realizes the on-demand adjusting of measure spectrum range.
Description of the drawings
Fig. 1 is a kind of EO-1 hyperion laser radar target sample experimental rig of the embodiment of the present invention and the overall structure of method
Schematic diagram；
Fig. 2 is a kind of EO-1 hyperion laser radar target sample experimental rig of the embodiment of the present invention and the transmitting sampling of method
Detecting module schematic diagram；
Fig. 3 is a kind of EO-1 hyperion laser radar target sample experimental rig of the embodiment of the present invention and the receiving portion of method
Principle schematic；
Fig. 4 be the embodiment of the present invention a kind of EO-1 hyperion laser radar target sample experimental rig and method multichannel it is complete
Waveform meter moves schematic diagram；
Wherein, 101：Pulsed super continuous spectrums laser light source；102：Optical fiber；103：Electricity adjusts collimator；106：Loading turntable；
107：Electric rotary table；108：Sample carrying disk；111：Light source levels turntable；112：The vertical turntable of light source；113：Horizontal stand；
114：And vertical rack；121：Detect vertical turntable；122：Telescopic detector carriage；123：Sliding block guide track structure；131 times
Wave collection device；132：Light harvesting optical fiber；135：Focus back；141：Detection device；147：Data collector；151：In control
The heart；160：Transmitting sampling detecting module；161：The micro- sampling mirror of plated film；162：Fiber adapter；163：Sample optical fiber；164：Light
Fine seat；165：Sampling detector；171：One-dimensional translation stage；172：Sensor moving component；173：32 yuan of linear array photomultipliers
Array；142：Optical fiber connector；143：Converge eyeglass；144：Reflecting grating；145：Converge speculum；146：Diaphragm；148：32
First linear array photomultiplier tube array sensor assembly；149：Sensor drive driving circuit；181：Switching switch；147：Data collector
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Implement below
Example is not limited to the scope of the present invention for illustrating the present invention.
In conjunction with shown in Fig. 1 to Fig. 4, an embodiment of the present invention provides a kind of experiments of EO-1 hyperion laser radar target sample to fill
It sets, including：Pulsed super continuous spectrums laser light source 101；Lasing light emitter two dimension angle station；The adjustable electricity of the angle of divergence adjusts collimator
103；It connects pulsed super continuous spectrums laser light source and electricity adjusts the micro-structure crystal optical fibre 102 of collimator；Loading turntable 106；It visits
Survey device angle station；It is fixed on the echo collection device 131 of detector carriage upper end；Detection device 141；Connect lasing light emitter two dimension
The control centre 151 of angle station, electricity tune collimator, detector angle station, loading turntable, detection device.The present invention uses
Pulsed super continuous spectrums laser source wavelength ranging from 350nm-2500nm.
In conjunction with Fig. 2, detection device 141 further includes individually emitting sampling detecting module all the way, including the micro- sampling mirror of plated film
161, fiber adapter 162, the sampling optical fiber 163 of quartz material, fiber bench 164, sampling detector 165, sampling detector
Output is directly inputted in data collector.The sampling module is for triggering one-shot measurement, while the energy sampled is also used for school
The output energy of quasi- laser.The sampling detector of the present invention is avalanche diode sensor.
In conjunction with Fig. 3, detection device includes optical fiber connector 142, converges eyeglass 143, and reflecting grating 144 converges speculum
145, diaphragm 146, the adjustable 32 yuan of linear array photomultiplier tube arrays sensor assembly 148 in position, sensor drive driving circuit 149,
Switch switch 181, data collector 147, the other end of the optical fiber connector connection light harvesting optical fiber 132, the sensor
Driving circuit connects 32 yuan of linear array photomultiplier tube arrays, the adjustable 32 yuan of linear arrays photomultiplier tube array sensor in position
Module 148 is included one-dimensional translation stage 171, the sensor moving component 172 installed with dove tail, is mounted on moving component
32 yuan of linear array photomultiplier tube arrays 173.Wherein, the sensor moving component of dove tail installation can be in one-dimensional translation
It drives 32 yuan of linear array photomultiplier tube arrays to realize fine tuning under the driving of platform, corresponds to the different spectrums after light splitting.
In conjunction with Fig. 1 to Fig. 4, lasing light emitter two dimension angle station includes light source levels turntable 111, the vertical turntable 112 of light source, water
Flat holder 113 and vertical rack 114, two motors control two turntable movements, realize the arbitrary orientation angle and zenith angle of light source
Motion control.Wherein, electricity tune collimator 103 is fixed on the upper end of the vertical rack 114 of lasing light emitter two dimension angle station.State load
Object turntable 106 is installed on the top of light source levels turntable 111 in horizontal direction, including loading electric rotary table 107 and is fixed on
Sample carrying disk 108 on loading electric rotary table.The target sample of measurement is positioned in carrying disk.Detector angle station packet
Include the telescopic detector carriage 122 for detecting vertical turntable 121 and being installed on the vertical turntable of detection, the scalable detection
Device holder uses sliding block guide track structure 123, for adjusting detection viewing field.The movement of detector angle station combination loading turntable,
Arbitrary detection zenith angle and azimuthal setting may be implemented.It can see from the geometrical relationship in Fig. 4, light source and detection are all located
In detection hemisphere outer surface on, to realize the measurement at any angle of hemispherical space inner light source and detector.
The specific work process of the present embodiment is：
S1：Control system resets, and lasing light emitter two dimension angle station, loading turntable, detector angle station read encoder
Location information, through control system relatively after, move to the initial position of setting；According to sample feature, electric adjustable economize on electricity is harmonized straight
The angle of divergence of device, and adjust the length of detector carriage manually and focus the position of back, determine the field angle of observation；
S2：According to test requirements document, light source and the azimuth of detector and the range of zenith angle are set in control centre
And measurement interval angle；
S3：Place reference white plate on loading turntable, experimental rig automatic running, measuring gage orientation and zenith angle
The spectrum multi-angle information of blank, in each measurement position, control centre sends the switching switch in instruction control detection device,
The photosignal incoming data collector in selected channel is measured；
S4：The drop target sample on loading turntable, experimental rig automatic running, measuring gage orientation and zenith angle
The spectrum multi-angle information of target sample, in each measurement position, control centre sends the switching in instruction control detection device
Switch, the photosignal incoming data collector in selected channel is measured；
S5：The signal that control software automatically obtains S3 and S4 steps carries out Gauss curve fitting, obtains the value on Gauss vertex；
S6：Control software is according to bidirectional reflectance because subformula calculates spectrum multi-angle information.
It the above is only the preferred embodiment of the present invention, it is noted that those skilled in the art are come
It says, without departing from the technical principles of the invention, several improvement and replacement can also be made, these improve and replace and also answer
It is considered as protection scope of the present invention.
Claims (3)
1. a kind of EO-1 hyperion laser radar target sample experimental rig, which is characterized in that described device includes：
Pulsed super continuous spectrums laser light source (101)；Lasing light emitter two dimension angle station；The adjustable electricity of the angle of divergence adjusts collimator
(103)；It connects pulsed super continuous spectrums laser light source and electricity adjusts the micro-structure crystal optical fibre (102) of collimator；Loading turntable
(106)；Detector angle station；It is fixed on the echo collection device (131) of detector carriage upper end；Detection device (141)；Even
Connect lasing light emitter two dimension angle station, electricity adjusts collimator, the control centre of detector angle station, loading turntable, detection device
(151)；
The lasing light emitter two dimension angle station includes light source levels turntable (111), the vertical turntable of light source (112), horizontal stand
(113) and vertical rack (114)；
Collimator (103) of the electricity adjusting is fixed on the upper end of the vertical rack (114) of the lasing light emitter two dimension angle station；
The loading turntable (106) is installed on the top of light source levels turntable (111), including loading electronic rotation in horizontal direction
Platform (107) and the sample carrying disk (108) being fixed on loading electric rotary table；
The detector angle station includes the telescopic spy for detecting vertical turntable (121) and being installed on the vertical turntable of detection
Device holder (122) is surveyed, the scalable detector carriage uses sliding block guide track structure (123), for adjusting detection viewing field；
The echo collection device (131), including lens barrel, the quartzy biconvex lens of lens barrel front end installation, front and back position are adjustable
Back (135), light harvesting optical fiber (132) are focused, one end of the light harvesting optical fiber is connected to the center for focusing back (135), in this
The heart is also detection target simultaneously into image focus；
The detection device (141) includes optical fiber connector (142), convergence eyeglass (143), reflecting grating (144), convergence reflection
Mirror (145), diaphragm (146), the adjustable 32 yuan of linear array photomultiplier tube arrays sensor assembly (148) in position, sensor driving
Circuit (149), switching switch (181), data collector (147), the optical fiber connector connection light harvesting optical fiber (132) is in addition
One end, the sensor drive driving circuit connect 32 yuan of linear array photomultiplier tube arrays, the adjustable 32 yuan of linear array photoelectricity in position
The sensor moving component that multiplier tube array sensor assembly (148) includes one-dimensional translation stage (171), is installed with dove tail
(172), 32 yuan of linear array photomultiplier tube arrays (173) on moving component；Detection device further includes individually sending out all the way
Sampling detecting module (160) is penetrated, the sampling light of the micro- sampling mirror of plated film (161), fiber adapter (162), quartz material is included
Fine (163), fiber bench (164), sampling detector (165), the output of sampling detector are directly inputted in data collector；Institute
It is fitted with absolute value on 4 driving motors in the lasing light emitter two dimension angle station stated, loading turntable, detector angle station
Encoder.
2. a kind of EO-1 hyperion laser radar target sample experimental rig according to claim 1, which is characterized in that further include
Diffusing reflection reference white plate.
3. a kind of experiment side using any one of claim 1~2 EO-1 hyperion laser radar target sample experimental rig
Method, which is characterized in that including：
S1：Control system resets, and lasing light emitter two dimension angle station, loading turntable, detector angle station read encoder position
Information, through control system relatively after, move to the initial position of setting；According to sample feature, straight device is harmonized in electric adjustable economize on electricity
The angle of divergence, and adjust the length of detector carriage manually and focus the position of back, determine the field angle of observation；
S2：According to test requirements document, light source and the azimuth of detector and range and the survey of zenith angle are set in control centre
Measure interval angles；
S3：Place reference white plate on loading turntable, experimental rig automatic running, the blank of measuring gage orientation and zenith angle
Spectrum multi-angle information, in each measurement position, control centre send instruction control detection device in switching switch, will select
The photosignal incoming data collector of routing measures；
S4：The target of the drop target sample on loading turntable, experimental rig automatic running, measuring gage orientation and zenith angle
The spectrum multi-angle information of sample, in each measurement position, control centre sends the switching switch in instruction control detection device,
The photosignal incoming data collector in selected channel is measured；
S5：The signal that control software automatically obtains S3 and S4 steps carries out Gauss curve fitting, obtains the value on Gauss vertex；
S6：Control software is according to bidirectional reflectance because subformula calculates spectrum multi-angle information.
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| CN109115689B (en) * | 2018-10-10 | 2024-02-09 | 鲁东大学 | Indoor measuring device for ground object bidirectional reflectivity |
| CN110426374B (en) * | 2019-07-31 | 2022-02-15 | 武昌理工学院 | Remote light sensing measurement and analysis device |
| CN112858189A (en) * | 2021-02-24 | 2021-05-28 | 深圳市太赫兹科技创新研究院有限公司 | Automatically controlled subassembly and spectrum appearance of spectrum appearance |
| CN113311408B (en) * | 2021-07-07 | 2023-05-26 | 中国地质大学（武汉） | Radiation correction method and device for hyperspectral laser radar |
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| CN100567916C (en) * | 2007-12-29 | 2009-12-09 | 中国科学院空间科学与应用研究中心 | The calibration measuring system of diffuse reflector spectrum corner reflection characteristic on the star |
| CN102175650A (en) * | 2011-01-30 | 2011-09-07 | 哈尔滨工业大学 | Measuring device of continuous spectrum bidirectional reflectance distribution function |
| CN103558605B (en) * | 2013-10-23 | 2016-04-06 | 中国科学院遥感与数字地球研究所 | A kind of EO-1 hyperion Full wave shape laser radar remote sensing system |
| DE102014203918B4 (en) * | 2014-03-04 | 2016-09-15 | Jürgen Marx | Methods and devices for detecting the surface structure and nature of a sample |
| CN104316468A (en) * | 2014-10-16 | 2015-01-28 | 北京理工大学 | Multi-purpose omnibearing measuring system for spectrum of surface feature sample |
| CN204945371U (en) * | 2015-09-17 | 2016-01-06 | 中国科学院遥感与数字地球研究所 | A kind of EO-1 hyperion laser radar target sample test unit |
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