CN107941711A - Multilayer dielectricity polarization transfer characteristics experiment test and the verification method of Computer Simulation - Google Patents
Multilayer dielectricity polarization transfer characteristics experiment test and the verification method of Computer Simulation Download PDFInfo
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Abstract
Multilayer dielectricity polarization transfer characteristics experiment test of the present invention and the verification method of Computer Simulation,Belong to polarisation transfer field of detecting,For non-homogeneous environment caused by multilayer dielectricity situation,The present invention uses multilayer dielectricity simulation system in experiment test,Pass through the optical thickness in experiment test each of which environmental simulation system,The parameters such as particle diameter,Establish required parameter in simulation system,Using the method for calculating recursion one by one,The incident light emulated using the emergent light of previous environmental simulation system emulation as the latter environmental simulation system,Establish the contact between each layer surrounding medium,So that experiment is verified mutually with emulation,Make it possible to emulate the polarization transfer characteristics under smog media environment heterogeneous using traditional monte carlo method,And it is improved the result accuracy rate of experiment test,Accuracy can be by theoretical validation,Extend the scope of application of polarisation transfer detection.
Description
Technical field
The present invention relates to a kind of multilayer dielectricity polarization transfer characteristics experiment test and the verification method of Computer Simulation, belong to
Polarisation transfer field of detecting.
Background technology
The polarization dimensional information that polarization imaging cannot reflect due to adding intensity and spectrum on the basis of intensity imaging, energy
The operating distance under the environment such as the difference between target and background, increase haze, flue dust is enough significantly increased, becomes and solves smog etc.
The effective means detected under particular surroundings, thus polarization transfer characteristics are studied to actual detection in this particular medium
With important research significance.
In recent years, with the extensive use of Polarization Detection technology, the requirement to polarization transfer characteristics computer simulation emulation
Also it is being continuously improved, for instructing experiment test, and the accuracy of confirmatory experiment test.At present, due to experimental situation
Controllability and uniform-spherical particle emulation computational theory maturity, research of many researchers to polarization transfer characteristics more stop
Uniform same media environment is stayed in, but in actual test environment, due to the collective effect of many kinds of substance, local environment is often
It is heterogeneous, and the situation of wherein most generally existing is polarised light is detected by multilayer dielectricity, then in this multilayer dielectricity
The polarization transfer characteristics experiment test obtained under environment can not be verified by traditional theory and emulation mode.
Therefore, it is real there is an urgent need for a kind of multilayer dielectricity polarization transfer characteristics for the non-homogeneous environment of this multilayer dielectricity situation
Test examination and the verification method of Computer Simulation.
The content of the invention
In order to study polarization transfer characteristics of the polarised light after a variety of media, and in experiment test and Computer Simulation side
It is verified jointly under method, there is higher test accuracy, it is real that the present invention proposes a kind of multilayer dielectricity polarization transfer characteristics
Test examination and the verification method of Computer Simulation.
The present invention adopts the following technical scheme that：Multilayer dielectricity polarization transfer characteristics experiment test and Computer Simulation are tested
Card method, it is characterised in that the optical system that this method uses includes polarised light and is polarized system, multilayer dielectricity simulation system and inclined
Transmission characteristic of shaking detection system, polarised light are polarized system, multilayer dielectricity simulation system and polarization transfer characteristics detection system successively
It is arranged in the transmission light path of light beam；
The polarised light is polarized system by laser, colimated light system, optical filter, linear polarizer and quarter-wave plate group
Into, and the axis on the basis of horizontal direction, linear polarizer angle of regulation range are 0 °~360 °, the angular adjustment of quarter-wave plate
Scope is 0 °~360 ° or removes；
The multilayer dielectricity simulation system includes environmental simulation system, and environmental simulation system quantity is N number of, N >=2, N number of ring
Border simulation system is placed side by side along the direction of propagation of light, two neighboring environmental simulation system, previous environmental simulation system
Exit window be directed at the incident window of the latter environmental simulation system；
The polarization transfer characteristics detection system includes polarization state measuring instrument, the degree of polarization for real-time detection polarised light；
Specifically comprise the following steps：
Step 1: along the direction of propagation of light, laser, colimated light system, optical filter and environmental simulation system sequentially cloth
Put, open laser, light beam is projected after colimated light system, optical filter and environmental simulation system, detected by light power meter successively
The light intensity value of outgoing beam, the light intensity value I of outgoing beam when record is not filled with any mediumo；
Step 2: being filled with smog into the environmental simulation system described in step 1, record is filled with the time of smog, waits to stop
After being filled with smog, by the light intensity value of light power meter detection outgoing beam after smoky environment, the light intensity that light power meter detects is treated
After value stabilization, the light intensity value I of the outgoing beam after smoky environment is recorded；
Step 3: the light intensity value I of outgoing beam when not being filled with any medium obtained by step 1oObtained with step 2
The light intensity value I of outgoing beam after smoky environment, obtain the opticalthicknessτ under smoky environment,
Step 4: Malvern ParticleSizer, is placed on by the smog in emptying environmental simulation system along the transmission direction of light
Inside environmental simulation system, smog is filled with into environmental simulation system again, the time and step 2 for being filled with smog are filled with smog
Time it is identical, by the particle size parameters that smog is filled with Malvern ParticleSizer measuring environment simulation system；
Step 5: Malvern ParticleSizer, is moved on to the transmission direction that do not shut out the light by the smog in emptying environmental simulation system
Optional position；
Step 6: repeat step two arrives step 5, number of repetition is secondary for (N-1), N >=2, and every time to environmental simulation system
Different types of smog is filled with, while different from the smog that step 2 is filled with into step 5 environmental simulation system, is obtained (N-1)
The light intensity value of a outgoing beam after smoky environment, the optical thickness under (N-1) a smoky environment, (N-1) a environmental simulation system
The particle size parameters of smog are filled with system；
Step 7: by step 1 to step 6, the light intensity value of N number of outgoing beam after smoky environment, N number of smog are obtained
Optical thickness under environment, the particle size parameters of smog are filled with N number of environmental simulation system；
Step 8: placing linear polarizer and quarter-wave plate after the optical filter described in step 1, optical filter is emitted
Light beam be polarized, the polarised light of acquisition incides multilayer dielectricity simulation system, while the N into multilayer dielectricity simulation system
Smog is filled with a environmental simulation system, a kind of smog is filled with each environmental simulation system, first environmental simulation system fills
Enter the first smog, the first smog is consistent with the smog species described in step 1 to step 5, and the first smog is filled with
Time is identical with the time that smog is filled with step 2 to be consistent, and so on, n-th environmental simulation system is filled with N kinds
Smog, and be filled with time and any one smog described in step 6 of N kind smog are filled with the time and are consistent, in multilayer
The exit end of medium simulation system is recorded in real time by polarization state measuring instrument；
Step 9: according to the component of smog in N number of environmental simulation system, refractive index table is searched, finds the folding of corresponding smog
Rate is penetrated, by the refraction of smog in the optical maser wavelength, the polarization state of incident polarized light, first environmental simulation system of laser transmitting
The optical thickness values of smog are sequentially inputted in the particle diameter that rate and Malvern ParticleSizer measure, and first environmental simulation system
In Monte Carlo simulation program, pass through the polarization state after one layer of media environment for computer simulation polarised light；
Step 10: reruning Monte Carlo program, the optical maser wavelength of laser transmitting, polarised light are passed through into one layer of medium
The particle diameter that the refractive index of smog and Malvern ParticleSizer measure in rear polarization state, second environmental simulation system, and second
The optical thickness values of smog are sequentially inputted in Monte Carlo simulation program in a environmental simulation system, inclined for computer simulation
Light shake by the polarization state after two layer medium environment, and so on, it is iterated, passes through N layers for computer simulation polarised light
Polarization state after media environment.
Further, the concentration that smog is filled with the step two is adjusted according to the time for being filled with smog, is filled with cigarette
The concentration of mist is directly proportional to the time for being filled with smog.
By above-mentioned designing scheme, the present invention can bring following beneficial effect：It is inclined that the present invention provides a kind of multilayer dielectricity
Transmission characteristic of shaking experiment test and the verification method of Computer Simulation, for the polarisation transfer problem under multi-dielectric environment, by
Uniform same medium is only applicable in existing Monte Carlo simulation simulated program, experimental results can not be verified, this
Invention uses multilayer dielectricity simulation system in experiment test, passes through the light in experiment test each of which environmental simulation system
The parameters such as thickness, particle diameter are learned, establish required parameter in simulation system, using the method for calculating recursion one by one, with previous
The incident light that is emulated as the latter environmental simulation system of emergent light of environmental simulation system emulation, establish each layer surrounding medium it
Between contact so that experiment is verified mutually with emulation, is made using traditional monte carlo method emulation smog Jie heterogeneous
Polarization transfer characteristics under matter environment are possibly realized, and are improved the result accuracy rate of experiment test, and accuracy can be by
Theoretical validation, extends the scope of application of polarisation transfer detection.
Brief description of the drawings
Below in conjunction with brief description of the drawings, the invention will be further described with embodiment：
Fig. 1 is the schematic diagram of medium parameter testing in environmental simulation system of the present invention.
Fig. 2 is the schematic diagram of multilayer dielectricity polarization transfer characteristics experiment test of the present invention.
In figure：1- polarised lights are polarized system, 11- lasers, 12- colimated light systems, 13- optical filters, 14- linear polarizers, 15-
Quarter-wave plate, 2- multilayer dielectricities simulation system, 3- polarization transfer characteristics detection system, 4- environmental simulation systems, 5- light work(
Rate meter.
Embodiment
As shown in Figures 1 and 2, a kind of multilayer dielectricity polarization transfer characteristics experiment test proposed by the present invention is imitated with computer
Genuine verification method, it is characterized in that：System 1, multilayer dielectricity simulation system 2 and polarization transfer characteristics detection are polarized including polarised light
System 3, polarised light are polarized system 1, multilayer dielectricity simulation system 2 and polarization transfer characteristics detection system 3 and are successively set on light beam
Transmission light path on；
The polarised light, which is polarized system 1, includes laser 11, colimated light system 12, optical filter 13, linear polarizer 14 and four points
One of wave plate 15, and the axis on the basis of horizontal direction, 14 angle of regulation range of linear polarizer be 0 °~360 °, quarter-wave plate
15 angle of regulation range is 0 °~360 ° or removes；
The multilayer dielectricity simulation system 2 includes environmental simulation system 4, and 4 quantity of environmental simulation system is two, and along
The environmental simulation system 4 of the direction of propagation two of light is placed side by side, and the exit window alignment of previous environmental simulation system 4 is latter
The incident window of a environmental simulation system 4；The multilayer dielectricity simulation system 2 needs that above placement can be followed according to actual test
Principle places multiple environmental simulation systems 4；
The polarization transfer characteristics detection system 3 includes polarization state measuring instrument, the degree of polarization for real-time detection polarised light；
Required equipment：The computer system of VC++ is installed；
Embodiment one
Multilayer dielectricity polarization transfer characteristics experiment test and the verification method of Computer Simulation, include the following steps,
Step 1: opening laser 11, light beam by colimated light system 12, optical filter 13, produces uniform, collimation flat successively
Row light, is incided in environmental simulation system 4, the light beam being emitted through environmental simulation system 4 detected by light power meter 5 be not filled with it is any
Light intensity value I during mediumo；
Step 2: being filled with mist of oil into environmental simulation system 4, record is filled with the time of mist of oil, after mist is filled in stopping, starting
The light intensity value being emitted after mist environment is recorded by light power meter 5, after the light intensity value stabilization detected in light power meter 5, is said
Mist of oil reaches stable in bright environmental simulation system at this time 4, then records this light intensity value I；
Step 3: light intensity value I when not being filled with any medium by what is recordedoBe filled with the meters of the light intensity value I after mist of oil medium
The opticalthicknessτ under this sampling time is calculated, it is as follows：
Step 4: mist of oil of the emptying in environmental simulation system 4, places Malvern ParticleSizer along the transmission direction of light
Inside environmental simulation system 4, mist of oil is filled with into environmental simulation system 4 again, the time and step 2 for being filled with mist of oil are filled with
The time of mist of oil is identical, it is ensured that it is identical with the concentration that mist of oil is filled with step 2 to be filled with the concentration of mist of oil, by Malvern ParticleSizer
The particle size parameters of mist of oil are filled with measuring environment simulation system 4；
Step 5: Malvern ParticleSizer, is moved on to the transmission direction that do not shut out the light by the mist of oil in emptying environmental simulation system 4
Optional position；
Step 6: repeat step two, is filled with water mist into environmental simulation system 4 at this time, then re-start record；And repeat
Step 3, records the optical thickness under water mist environment；Repeat step four, the particle diameter of water mist is filled with measuring environment simulation system 4
Parameter；Repeat step five, empties the water mist in environmental simulation system 4, Malvern ParticleSizer is moved on to the transmission side that do not shut out the light
To optional position；
Step 7: placing linear polarizer 14 and quarter-wave plate 15 after optical filter 13, form polarised light and be polarized system,
The polarised light of generation is incided in multilayer dielectricity simulation system 2, and multilayer dielectricity simulation system 2 includes two environmental simulation systems
4, mist of oil is filled with first environmental simulation system 4, and ensure to be filled with the time with being filled with the time consistency of mist of oil in step 2, the
Water mist is filled with two environmental simulation systems 4, and ensures to be filled with the time with being filled with the time consistency of water mist in step 6, treats environment
After stabilization, recorded in real time by polarization state measuring instrument in the exit end of multilayer dielectricity simulation system 2；
Step 8: according to the component of smog in two environmental simulation systems 4 in multilayer dielectricity simulation system 2, refraction is searched
Rate table, finds the refractive index of corresponding smog, and optical maser wavelength, the polarization state of incident polarized light, the multilayer that laser 11 is launched are situated between
The particle diameter that the refractive index of mist of oil and Malvern ParticleSizer measure in first environmental simulation system 4 in matter simulation system 2, Yi Ji
The optical thickness values of mist of oil are sequentially inputted in Monte Carlo simulation program in one environmental simulation system 4, for computer mould
Intend polarised light and pass through the polarization state after one layer of media environment；
Step 9: rerun Monte Carlo program, optical maser wavelength that laser 11 is launched, polarised light pass through one layer of Jie
In polarization state, multilayer dielectricity simulation system 2 after matter in second environmental simulation system 4 water mist refractive index and Malvern granularity
The optical thickness values of water mist are sequentially inputted to Monte Carlo simulation journey in the particle diameter that instrument measures, and two environmental simulation systems 4
In sequence, pass through the polarization state after two layer medium environment for computer simulation polarised light；
The concentration of mist of oil is filled with the step two to be adjusted according to the time for being filled with mist of oil, be filled with the dense of smog
Spend directly proportional to the time for being filled with smog, i.e., the oil-filled mist time is longer, and the concentration of mist of oil is higher in environmental simulation system.
The water mist being filled with the mist of oil and step 6 that are filled with the step two, can need to select it according to actual measurement
His smog, but measuring process is constant.
Above-described embodiment is only the method and beneficial effect that the present invention is illustrated, not for the limitation present invention.Appoint
The personage what is familiar with the method can modify above-described embodiment under the spirit and scope without prejudice to the present invention.Therefore
The scope of the present invention, should be as listed by claim.
Claims (2)
1. multilayer dielectricity polarization transfer characteristics experiment test and the verification method of Computer Simulation, it is characterised in that this method is adopted
Optical system is polarized system (1), multilayer dielectricity simulation system (2) and polarization transfer characteristics detection system including polarised light
(3), polarised light is polarized system (1), multilayer dielectricity simulation system (2) and polarization transfer characteristics detection system (3) and is successively set on
In the transmission light path of light beam；
The polarised light be polarized system (1) by laser (11), colimated light system (12), optical filter (13), linear polarizer (14) and
Quarter-wave plate (15) forms, and the axis on the basis of horizontal direction, and linear polarizer (14) angle of regulation range is 0 °~360 °,
The angle of regulation range of quarter-wave plate (15) is 0 °~360 ° or removes；
The multilayer dielectricity simulation system (2) includes environmental simulation system (4), and environmental simulation system (4) quantity is N number of, N >=2,
N number of environmental simulation system (4) is placed side by side along the direction of propagation of light, two neighboring environmental simulation system (4), previous ring
The exit window of border simulation system (4) is directed at the incident window of the latter environmental simulation system (4)；
The polarization transfer characteristics detection system (3) includes polarization state measuring instrument, the degree of polarization for real-time detection polarised light；
Specifically comprise the following steps：
Step 1: along the direction of propagation of light, laser (11), colimated light system (12), optical filter (13) and environmental simulation system
System (4) is sequentially arranged, opens laser (11), and light beam passes through colimated light system (12), optical filter (13) and environmental simulation system successively
System (4) projects afterwards, by the light intensity value of light power meter (5) detection outgoing beam, outgoing beam when record is not filled with any medium
Light intensity value Io；
Step 2: being filled with smog into the environmental simulation system (4) described in step 1, record is filled with the time of smog, waits to stop
After being filled with smog, by the light intensity value of light power meter (5) detection outgoing beam after smoky environment, treat that light power meter (5) detects
Light intensity value stabilization after, record the light intensity value I of the outgoing beam after smoky environment；
Step 3: the light intensity value I of outgoing beam when not being filled with any medium obtained by step 1oThe warp obtained with step 2
The light intensity value I of outgoing beam, obtains the opticalthicknessτ under smoky environment after smoky environment,
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Step 4: the smog in emptying environmental simulation system (4), ring is placed on along the transmission direction of light by Malvern ParticleSizer
Border simulation system (4) is internal, is filled with smog into environmental simulation system (4) again, the time and step 2 for being filled with smog are filled with
The time of smog is identical, by the particle size parameters that smog is filled with Malvern ParticleSizer measuring environment simulation system (4)；
Step 5: Malvern ParticleSizer, is moved on to the transmission direction that do not shut out the light by the smog in emptying environmental simulation system (4)
Optional position；
Step 6: repeat step two arrives step 5, number of repetition is secondary for (N-1), N >=2, and every time to environmental simulation system (4)
Different types of smog is filled with, while different from the smog that step 2 is filled with into step 5 environmental simulation system, is obtained (N-1)
The light intensity value of a outgoing beam after smoky environment, the optical thickness under (N-1) a smoky environment, (N-1) a environmental simulation system
The particle size parameters of smog are filled with system (4)；
Step 7: by step 1 to step 6, the light intensity value of N number of outgoing beam after smoky environment, N number of smoky environment are obtained
Under optical thickness, the particle size parameters of smog are filled with N number of environmental simulation system (4)；
Step 8: linear polarizer (14) and quarter-wave plate (15) are placed afterwards in the optical filter (13) described in step 1, to filter
The light beam of mating plate (3) outgoing is polarized, and the polarised light of acquisition incides multilayer dielectricity simulation system (2), while is situated between to multilayer
Smog is filled with N number of environmental simulation system (4) in matter simulation system (2), a kind of cigarette is filled with each environmental simulation system (4)
Mist, first environmental simulation system (4) are filled with the first smog, the first smog and the smog kind described in step 1 to step 5
Class is consistent, and the first smog to be filled with the time identical with the time that smog is filled with step 2 is consistent, and so on,
N number of environmental simulation system (4) is filled with N kind smog, and N kind smog is filled with time and any one described in step 6
Smog is filled with the time and is consistent, and is recorded in real time by polarization state measuring instrument in the exit end of multilayer dielectricity simulation system (2)；
Step 9: according to the component of smog in N number of environmental simulation system (4), refractive index table is searched, finds the refraction of corresponding smog
Rate, by smog in the optical maser wavelength, the polarization state of incident polarized light, first environmental simulation system (4) of laser (11) transmitting
Refractive index and the particle diameter that measures of Malvern ParticleSizer, and in first environmental simulation system (4) smog optical thickness values
It is sequentially inputted in Monte Carlo simulation program, passes through the polarization state after one layer of media environment for computer simulation polarised light；
Step 10: reruning Monte Carlo program, the optical maser wavelength of laser (11) transmitting, polarised light are passed through into one layer of medium
The particle diameter that the refractive index of smog and Malvern ParticleSizer measure in rear polarization state, second environmental simulation system (4), Yi Ji
The optical thickness values of smog are sequentially inputted in Monte Carlo simulation program in two environmental simulation systems (4), for computer
Polarised light is simulated by the polarization state after two layer medium environment, and so on, it is iterated, leads to for computer simulation polarised light
Cross the polarization state after N layers of media environment.
2. multilayer dielectricity polarization transfer characteristics experiment test according to claim 1 and the verification method of Computer Simulation,
It is characterized in that：The concentration that smog is filled with the step two is adjusted according to the time for being filled with smog, is filled with smog
Concentration is directly proportional to the time for being filled with smog.
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| CN110927071A (en) * | 2019-12-16 | 2020-03-27 | 长春理工大学 | Method for verifying polarization transmission characteristic test and simulation of sea fog environment under influence of illumination |
| CN110987816A (en) * | 2019-12-16 | 2020-04-10 | 长春理工大学 | Multilayer sea fog environment active polarization characteristic test system under influence of solar illumination |
| CN110927071B (en) * | 2019-12-16 | 2022-10-11 | 长春理工大学 | Verification method for testing and simulating polarization transmission characteristics of sea fog environment under influence of illumination |
| CN111141390A (en) * | 2020-02-20 | 2020-05-12 | 长春理工大学 | Dual-waveband polarization characteristic testing system based on sea fog multilayer medium environment |
| CN111141390B (en) * | 2020-02-20 | 2024-05-28 | 长春理工大学 | Dual-band polarization characteristic testing system based on sea fog multi-layer medium environment |
| CN111854958A (en) * | 2020-08-24 | 2020-10-30 | 长春理工大学 | Active and passive testing method and system for polarized light transmission characteristics in complex sea fog environment |
| CN111854958B (en) * | 2020-08-24 | 2024-06-04 | 长春理工大学 | Active and passive testing method and system for polarized light transmission characteristics in complex sea fog environment |
| CN113758878A (en) * | 2021-09-29 | 2021-12-07 | 长春理工大学 | Sedimentation water mist interference suppression method based on equivalent optical thickness |
| CN116559089A (en) * | 2023-07-06 | 2023-08-08 | 长春理工大学 | Multilayer medium polarization characteristic acquisition device and method |
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