CN107545082B - A kind of radiation effect calculation method in EO-1 hyperion emulation - Google Patents
A kind of radiation effect calculation method in EO-1 hyperion emulation Download PDFInfo
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- CN107545082B CN107545082B CN201610473416.4A CN201610473416A CN107545082B CN 107545082 B CN107545082 B CN 107545082B CN 201610473416 A CN201610473416 A CN 201610473416A CN 107545082 B CN107545082 B CN 107545082B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
Radiation effect calculation method the present invention relates to Computer Simulation field, in specifically a kind of EO-1 hyperion emulation.The present invention comprises steps of determining that parameter relevant to radiation in scene；According to itself radiation of target own face temperature computation target；Reflection of the target to solar radiation is calculated according to sun parameter and target surface reflectivity；Calculate the reflection that target radiates adjacent building itself；It calculates reflection of the target to adjacent building to solar radiation: calculating the radiation effect of target according to sun parameter and atmospheric environmental parameters.The present invention can effectively handle adjacent objects in EO-1 hyperion emulation and improve simulation fidelity for the radiation effect of target.
Description
Technical field
Radiation effect calculating side the present invention relates to Computer Simulation field, in specifically a kind of EO-1 hyperion emulation
Method.
Background technique
Traditional infrared simulation method can consider target itself radiation and week when the radiation event to detection target models
The radiation in collarette border.And under normal conditions, the radiation of ambient enviroment includes target to solar radiation, atmospheric radiation, terrestrial surface radiation
Reflection.
In EO-1 hyperion emulation, traditional emulation mode is not enough to react the radiation event of target.Such as when target is in
When the side of one building, adjacent building can have an impact the radiation characteristic of target, and this influence is in EO-1 hyperion
It is especially apparent.
Summary of the invention
For the fidelity for improving the emulation of EO-1 hyperion infrared radiation characteristics, the present invention provides the spokes in a kind of emulation of EO-1 hyperion
Projection rings calculation method, can effectively quantify influence of the ambient enviroment in specific band to the radiation characteristic of target, effectively improve
The fidelity of simulation calculation.
Present invention technical solution used for the above purpose is: the radiation effect in a kind of EO-1 hyperion emulation calculates
Method, comprising the following steps:
Determine parameter relevant to radiation in scene；
According to itself radiation of target own face temperature computation target；According to sun parameter and target surface albedometer
Calculate reflection of the target to solar radiation；Calculate the reflection that target radiates adjacent building itself；Target is calculated to adjacent building pair
The reflection of solar radiation:
The radiation effect of target is calculated according to sun parameter and atmospheric environmental parameters.
Parameter relevant to radiation includes: Facing material, neighbor distance, atmospheric environment, sun parameter in the scene.
Itself radiation according to target own face temperature computation target, specifically:
Black body radiation is calculated according to Planck law, target itself spoke is calculated according to black body radiation and target optical spectrum emissivity
It penetrates.
It is described that reflection of the target to solar radiation is calculated according to sun parameter and target surface reflectivity, specifically:
Direct solar radiation is calculated using Modtran, being multiplied with target surface reflectivity can be obtained target to the sun
The reflection of radiation.
The reflection for calculating target and adjacent building itself being radiated, comprising the following steps:
Atmospheric transmittance is calculated according to atmospheric environment；
According to adjacent building surface temperature calculate spoke out-degree, and then calculate target adjacent building itself is radiated it is anti-
It penetrates.
The reflection that target is calculated to adjacent building to solar radiation, specifically:
The total radiance of the solar radiation from adjacent building that any point can receive in target indicates are as follows:
Wherein, Lsun(λ) refers to the radiance on sun arrival ground under current atmospheric situation, ρb(λ) is external wall material
For the reflectivity of λ wave band, ξ (λ) is the atmospheric transmittance of wave band, ρr(λ) is the reflectivity that target surface radiates wave band.
The radiation effect that target is calculated according to sun parameter and atmospheric environmental parameters, are as follows:
Wherein,Indicate target to adjacent building itself
Reflection the sum of of the reflection and target of radiation to adjacent building to solar radiation, L (λ, T) indicate itself radiation of target, Lrsun
Indicate reflection of the target to solar radiation.
The present invention has the following advantages and beneficial effects:
1., by calculating the radiation effect of adjacent objects, improving target in EO-1 hyperion infrared radiation characteristics simulation process
Simulation fidelity.
2. can effectively calculate ambient enviroment influences final radiation characteristic bring in certain sensitive bands, emulation is improved
Fidelity.
Detailed description of the invention
Fig. 1 is building scene implementation example figure of the invention；
Fig. 2 is the calculated result figure of Fig. 1.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and embodiments.
(1) input scene data, including Facing material, neighbor distance, atmospheric environment, sun parameter etc.:
Determine the relevant calculation data of scene；
(2) target itself radiation is calculated:
Itself radiation according to target own face temperature computation target；
Planck law calculates black body radiation brightness:
And then common objects radiance is calculated, ε (λ) is target optical spectrum emissivity
L (λ, T)=Lb(λ, T) * ε (λ)
Wherein, λ indicates current wavelength, unit μm, and T indicates the thermodynamic temperature of object, and unit K, c is the light velocity.
(3) reflection of the target to solar radiation is calculated:
Reflection of the target to solar radiation is calculated according to sun parameter and target surface reflectivity；
Lrsun=Lsun*ρ(λ)
Wherein, LsunFor direct solar radiation, ρ (λ) is target surface reflectivity.
(4) reflection that target radiates adjacent building itself is calculated:
Atmospheric transmittance is calculated according to atmospheric environment；
According to adjacent building surface temperature calculate spoke out-degree, and then calculate target adjacent building itself is radiated it is anti-
It penetrates.
The radiance for the adjacent building that any point can receive in target are as follows:
Wherein, Lrb(λ) is the reflection that target radiates adjacent building, Lbp(λ, T) is the effective spoke of unit on adjacent building
The radiance of area λ wave band at a temperature of T is penetrated, ξ (λ) is the atmospheric transmittance of λ wave band, ρr(λ) is target surface to wave band
The reflectivity of radiation.
ξ (λ) is directly calculated by Modtran.
(5) reflection of the target to adjacent building to solar radiation is calculated:
It is calculated according to sun parameter and atmospheric environmental parameters calculates the reflection that target radiates adjacent building.It is any in target
The total radiance of some solar radiation from adjacent building that can be received is represented by
Wherein, Lsun(λ) refers to the radiance on sun arrival ground under current atmospheric situation, ρb(λ) is external wall material
For the reflectivity of λ wave band.
(6) radiation effect is calculated:
The reflection and target that target radiates adjacent building itself claim the reflection two parts of adjacent building to solar radiation
For interference radiation.Target itself radiation and target are known as self-radiation to the reflection of solar radiation.Interference radiation and self-radiation
Ratio be known as radiation effect.
Claims (4)
1. the radiation effect calculation method in a kind of EO-1 hyperion emulation, which comprises the following steps:
Determine parameter relevant to radiation in scene；
According to itself radiation of target own face temperature computation target；Mesh is calculated according to sun parameter and target surface reflectivity
Mark the reflection to solar radiation；Calculate the reflection that target radiates adjacent building itself；Target is calculated to adjacent building to the sun
The reflection of radiation；
The radiation effect of target is calculated according to sun parameter and atmospheric environmental parameters；
The reflection for calculating target and adjacent building itself being radiated, comprising the following steps:
Atmospheric transmittance is calculated according to atmospheric environment；
Spoke out-degree is calculated according to adjacent building surface temperature, and then calculates the reflection that target radiates adjacent building itself；
The reflection that target is calculated to adjacent building to solar radiation, specifically:
The total radiance of the solar radiation from adjacent building that any point can receive in target indicates are as follows:
Wherein, Lsun(λ) refers to the radiance on sun arrival ground under current atmospheric situation, ρb(λ) is external wall material for λ
The reflectivity of wave band, ξ (λ) are the atmospheric transmittance of wave band, ρr(λ) is the reflectivity that target surface radiates wave band；
The radiation effect that target is calculated according to sun parameter and atmospheric environmental parameters, are as follows:
Wherein,Indicate what target radiated adjacent building itself
Reflection and reflection the sum of of the target to adjacent building to solar radiation, L (λ, T) indicate itself radiation of target, LrsunIndicate mesh
Mark the reflection to solar radiation, Lbp(λ, T) is the radiation of unit effective radiating area λ wave band at a temperature of T on adjacent building
Brightness.
2. the radiation effect calculation method in a kind of EO-1 hyperion emulation according to claim 1, which is characterized in that the field
It includes: Facing material, neighbor distance, atmospheric environment, sun parameter that Jing Zhongyu, which radiates relevant parameter,.
3. the radiation effect calculation method in a kind of EO-1 hyperion emulation according to claim 1, which is characterized in that described
According to target own face temperature computation target itself radiation, specifically:
Black body radiation is calculated according to Planck law, target itself radiation is calculated according to black body radiation and target optical spectrum emissivity.
4. the radiation effect calculation method in a kind of EO-1 hyperion emulation according to claim 1, which is characterized in that described
Reflection of the target to solar radiation is calculated according to sun parameter and target surface reflectivity, specifically:
Direct solar radiation is calculated using Modtran, being multiplied with target surface reflectivity can be obtained target to solar radiation
Reflection.
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Citations (3)
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| CN101477197A (en) * | 2009-01-24 | 2009-07-08 | 哈尔滨工业大学 | Simulation method used for woodland complex scene high-spectrum remote sensing data |
| CN104880701A (en) * | 2014-09-23 | 2015-09-02 | 航天恒星科技有限公司 | Satellite-borne sensor imaging simulation method and device |
| CN105243289A (en) * | 2015-11-17 | 2016-01-13 | 上海无线电设备研究所 | Integrated modeling method for infrared radiation characteristic of complicated target |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101477197A (en) * | 2009-01-24 | 2009-07-08 | 哈尔滨工业大学 | Simulation method used for woodland complex scene high-spectrum remote sensing data |
| CN104880701A (en) * | 2014-09-23 | 2015-09-02 | 航天恒星科技有限公司 | Satellite-borne sensor imaging simulation method and device |
| CN105243289A (en) * | 2015-11-17 | 2016-01-13 | 上海无线电设备研究所 | Integrated modeling method for infrared radiation characteristic of complicated target |
Non-Patent Citations (1)
| Title |
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| 考虑太阳辐射影响的建筑设计策略研究;赵玉芬;《万方数据库》;20140122;全文 * |
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