CN207528348U - One kind is suitable for airborne thermal infrared imaging spectrometer atmospheric correction system - Google Patents
One kind is suitable for airborne thermal infrared imaging spectrometer atmospheric correction system Download PDFInfo
- Publication number
- CN207528348U CN207528348U CN201721113894.0U CN201721113894U CN207528348U CN 207528348 U CN207528348 U CN 207528348U CN 201721113894 U CN201721113894 U CN 201721113894U CN 207528348 U CN207528348 U CN 207528348U
- Authority
- CN
- China
- Prior art keywords
- thermal infrared
- atmospheric
- radiation
- plated
- gold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Radiation Pyrometers (AREA)
Abstract
This patent discloses a kind of suitable for airborne thermal infrared imaging spectrometer atmospheric correction system.System includes stent, stabilized platform, gold-plated diffusing reflection plate, fiber fixed frame, coated plate temp probe, data line, thermometer host, optical fiber and high-precision thermal infrared spectrum instrument.Downward atmospheric thermal infrared radiation, atmospheric path radiation and atmospheric transmittance under different atmospheric conditions are generated using MODITRAN, establishes reference database.Search and the most matched downward atmospheric thermal infrared radiation spectrum of the measuring results from reference database again, search corresponding atmospheric path radiation, Earth Surface Atmosphere downlink thermal infrared radiation and atmospheric transmittance.Finally on the basis of the time, according to radiation transfer equation, in the thermal infrared high-spectral data obtained from the imaging spectrometer after radiation calibration, liftoff radiation spectrum is calculated by pixel, realizes the atmospheric correction of thermal infrared imaging spectrometer.The atmospheric correction system and method for this patent can increase substantially airborne thermal infrared high-spectral data atmospheric correction precision.
Description
Technical field
This patent is related to technical field of earth observation, and it is big to be suitable for airborne thermal infrared imaging spectrometer more particularly to one kind
Gas corrects system.
Background technology
Heat radiation is most widely radiated present in nature, it can make researcher at unglazed night, clearly
Observe surface condition.Using this feature of heat radiation, thermal infrared remote sensing is provided with the earth observation ability of round-the-clock.EO-1 hyperion is distant
Sense has the characteristics that nanoscale high spectral resolution and " collection of illustrative plates ".It is every in high spectrum image while being imaged to atural object
A pixel obtains tens or even the continuous spectral information of hundreds of nanometers grade so that image has space, radiation and wave simultaneously
Spectrum information.The detectivity of Thermal infrared bands and the advantage of high-spectrum remote-sensing are combined, is obtained by thermal infrared imaging spectrometer
The thermal infrared high-spectrum remote sensing data taken can detect Pollution Gas, identify mineral, probe vehicle tail gas etc..It meanwhile can
With with degree of precision inverting surface temperature.Thermal infrared high-spectrum remote-sensing has been widely applied to urban heat land effect, forest at present
Fire monitoring, drought monitoring, mineral detection, geothermal measurement, karst region Tan Shuideng fields.
Airborne platform is a kind of important remote sensing platform, it has maneuverability, not by cloud block, spatial resolution height etc.
Feature is widely used in each remote sensing fields, the unmanned aerial vehicle remote sensing technology especially risen in recent years.Airborne thermal infrared imaging
Spectrometer, inevitably by atmospheric effect, obtains thermal infrared high-spectrum remote sensing data and includes greatly in data procedures are obtained
Gas radiation information.Therefore, before thermal infrared high-spectral data is further applied, it is necessary to thermal infrared high-spectrum remote-sensing number
According to progress atmospheric correction.High-precision atmospheric correction is beneficial to improve thermal infrared high-spectral data subsequent applications effect.
At present, mainly there are two classes available for airborne thermal infrared high-spectral data atmospheric correction method.First kind method is profit
With the atmospheric outline of inverting or actual measurement, it is aided with ripe atmospheric radiation transmission to realize.However, atmospheric outline is visited at present
The atmospheric correction of pixel grade can not be realized by surveying.Second class method is that slave heat-carrying infrared high spectrum data space and spectral information go out
Hair directly calculates the atmospheric parameters such as atmospheric transmittance, the radiation of air uplink and downlink by airborne imaging spectrum instrument observation data, as usual
ISAC (In-scene Atmospheric Compensation) methods and AAC (Autonomous Atmospheric
Compensation) method.There are black matrixes and blackbody temperature to differ greatly for ISAC requirements earth's surface, and actually this point is not easy to
Meet, especially in arid and semi-arid lands.AAC methods can have that a value solves more.In addition, for there is skies gas feelings
Under condition, due to can not accurately estimate cloud amount, cloud thickness etc., these methods are substantially invalid.Therefore, there is an urgent need for be directed to airborne heat
The characteristics of Infrared Imaging Spectrometer, exploitation be suitable for airborne thermal infrared imaging spectrometer atmospheric correction system and method, realize compared with
High-precision airborne thermal infrared imaging spectrometer atmospheric correction.
Invention content
For existing technological gap and shortcoming, the technical problem to be solved is that provide a kind of higher precision for this patent
Suitable for airborne thermal infrared imaging spectrometer atmospheric correction system.
In order to solve the above-mentioned technical problem, one kind that this patent provides is suitable for airborne thermal infrared imaging spectrometer air school
Positive system and method, its main feature is that：
1st, a kind of to be suitable for airborne thermal infrared imaging spectrometer atmospheric correction system, it includes stent 1, stabilized platform 2, plating
Golden diffusing reflection plate 3, fiber fixed frame 4, coated plate temp probe 5, data line 6, thermometer host 7, optical fiber 8 and high-precision heat are red
External spectrum instrument 9, it is characterised in that：
Stabilized platform 2 is fixed on stent 1, and gold-plated diffusing reflection plate 3, fiber fixed frame 4 are fixed on stabilized platform 2, plating
Golden plate temp probe 5 is fixed on gold-plated diffusing reflection plate 3, and optical fiber 8 is fixed on fiber fixed frame 4；
Optical fiber 8 is connected with high-precision thermal infrared spectrum instrument 9, the downward atmospheric heat that optical fiber 8 reflects gold-plated diffusing reflection plate 3
Infra-red radiation imports high-precision thermal infrared spectrum instrument 9.Coated plate temp probe 5 is connect by data line 6 with thermometer host 7,
For measuring the temperature of gold-plated diffusing reflection plate 3；
Stent 1, stabilized platform 2, gold-plated diffusing reflection plate 3, fiber fixed frame 4, coated plate temp probe 5, data line 6 and light
Fibre 8 forms signal collection subsystem.It is fixed on the covering outside aircraft cabin；
Thermometer host 7 and high-precision thermal infrared spectrum instrument 9 form signal storage subsystem, are placed in aircraft cabin；
Downward atmospheric thermal infrared radiation is reflected into optical fiber 8 by gold-plated diffusing reflection plate 3, and optical fiber 8 is by downward atmospheric thermal infrared
Radiation imports high-precision thermal infrared spectrum instrument 9.High-precision thermal infrared spectrum instrument 9 is recorded on the basis of the time and storage atmosphere downlink
Thermal infrared radiation data；
Coated plate temp probe 5 reaches local thermodynamic equilibrium by heat transfer and gold-plated diffusing reflection plate 3, and temperature signal is passed through
Data line 6 imports thermometer host 7.Thermometer host 7 is recorded on the basis of the time and storage temperature data.
2nd, a kind of airborne thermal infrared imaging light based on thermal infrared imaging spectrometer atmospheric correction system airborne described in feature 1
The method of spectrometer atmospheric correction, it is characterised in that include the following steps：
2.1 reference databases are established.To MODITRAN software air input parameter (Water Vapor Content, atmospheric model, gas
Colloidal sol pattern, cloud amount, surface air temperature, visibility, aircraft (or sensor) elevation, earth's surface elevation) it is configured, with as high as possible
Resolution ratio traversal be possible to value, generate aircraft elevation downward atmospheric thermal infrared radiation spectrum under different situations, earth's surface
Downlink radiation spectrum, atmospheric path radiation spectrum and atmospheric transmittance spectrum, establish reference database；
2.2 DATA REASONING.System described in feature 1 is installed on aircraft, it is same using the system and airborne imaging spectrum instrument
Walk survey aircraft elevation downward atmospheric thermal infrared radiation spectrum, gold-plated diffusing reflection plate temperature；
2.3 Spectral matchings and atmospheric correction.It is as follows：
2.3.1 according to gold-plated diffusing reflection plate temperature, the aircraft elevation downward atmospheric measured from high-precision thermal infrared spectrum instrument
Gold-plated diffusing reflection plate itself thermal infrared radiation part is deducted in thermal infrared radiation spectrum.Computational methods are：
Wherein：L↓Aircraft elevation downward atmospheric thermal infrared radiation after (λ) correction；LpanelIt is surveyed for high-precision thermal infrared spectrum instrument
The aircraft elevation downward atmospheric thermal infrared radiation measured；εpanelIt is 0.06 for the emissivity of gold-plated diffusing reflection plate；B(Tpanel)
For the black body radiation brightness corresponding to diffusing reflection plate, it is calculated by Planck law；TpanelFor gold-plated diffusing reflection plate temperature.
The downward atmospheric thermal infrared radiation of measurement and the downward atmospheric thermal infrared radiation in reference database are compared,
Search most matching aircraft elevation downward atmospheric thermal infrared radiation spectrum, find corresponding Earth Surface Atmosphere downlink thermal infrared radiation,
Atmospheric path radiation and the atmospheric transmittance curve of spectrum.
2.3.2 it is high that atmospheric model when being imaged with imaging spectrometer, aerosol model, aircraft are inquired from reference database
The corresponding one group of aircraft elevation downward atmospheric thermal infrared radiation of journey, ground elevation, Earth Surface Atmosphere downlink thermal infrared radiation, air journey
Radiation and atmospheric transmittance curve of spectrum data.
2.3.3 aircraft elevation downward atmospheric thermal infrared radiation and correction in curve of spectrum data set 2.3.2 obtained
Aircraft elevation downward atmospheric thermal infrared radiation spectrum is compared afterwards, is found out and aircraft elevation downward atmospheric thermal infrared spoke after correction
Penetrate spectrum mahalanobis distance minimum one, and inquire corresponding atmospheric path radiation and the atmospheric transmittance curve of spectrum.So as to
To optimal downward atmospheric thermal infrared radiation, atmospheric path radiation and atmospheric transmittance curve of spectrum correction parameter.
2.3.4 on the basis of the time, according to thermal infrared EO-1 hyperion radiation transfer equation, from the imaging after radiation calibration
Spectrometer is obtained in thermal infrared high-spectrum remote sensing data, is calculated the liftoff radiation spectrum of each pixel, realize thermal infrared into
As spectrometer atmospheric correction.Computational methods are
Wherein, L (λ) is obtained the spoke of any pixel in thermal infrared high-spectrum remote sensing data by airborne thermal infrared imaging spectrometer
It penetrates；Lg(λ) is the liftoff radiation of corresponding pixel；L↑(λ) and τ (λ) are respectively that the atmospheric path radiation that 2.3.3 is obtained and air are saturating
Cross rate spectrum.On the basis of the time, traverse airborne thermal infrared imaging spectrometer by above-mentioned formula and obtain thermal infrared high-spectrum remote-sensing
All pixels in data obtain the liftoff radiation spectrum of each pixel and its corresponding Earth Surface Atmosphere downlink thermal infrared radiation light
Spectrum completes atmospheric correction.
This patent has the beneficial effect that：The Real-Time Atmospheric radiation information of pixel grade can be obtained, improves the certainty of solution,
Increase substantially airborne thermal infrared imaging spectrometer atmospheric correction precision.
Description of the drawings
Fig. 1 is airborne thermal infrared imaging spectrometer atmospheric correction system.
In Fig. 1,1 stent, 2 stabilized platforms, 3 gold-plated diffusing reflection plates, 4 fiber fixed frames, 5 gold-plated editions temp probes, 6 data
Line, 7 thermometer hosts, 8 optical fiber, 9 high-precision thermal infrared spectrum instrument.
Specific embodiment
This patent is described in further detail below in conjunction with the accompanying drawings, but the present embodiment is not limited to this patent, it is every
Similar method and its similar variation using this patent should all be included in the protection domain of this patent.
1st, as shown in Figure 1, building airborne thermal infrared imaging spectrometer atmospheric correction system first, it includes stent 1, stablizes
Platform 2, gold-plated diffusing reflection plate 3, fiber fixed frame 4, coated plate temp probe 5, data line 6, thermometer host 7, optical fiber 8 and height
Precision thermal infrared spectrum instrument 9, it is characterised in that：
Stabilized platform 2 is fixed on stent 1, and gold-plated diffusing reflection plate 3, fiber fixed frame 4 are fixed on stabilized platform 2, plating
Golden plate temp probe 5 is fixed on gold-plated diffusing reflection plate 3, and optical fiber 8 is fixed on fiber fixed frame 4；
Optical fiber 8 is connected with high-precision thermal infrared spectrum instrument 9, the downward atmospheric heat that optical fiber 8 reflects gold-plated diffusing reflection plate 3
Infra-red radiation imports high-precision thermal infrared spectrum instrument 9.Coated plate temp probe 5 is connect by data line 6 with thermometer host 7,
For measuring the temperature of gold-plated diffusing reflection plate 3；
Stent 1, stabilized platform 2, gold-plated diffusing reflection plate 3, fiber fixed frame 4, coated plate temp probe 5, data line 6 and light
Fibre 8 forms signal collection subsystem.It is fixed on the covering outside aircraft cabin；
Thermometer host 7 and high-precision thermal infrared spectrum instrument 9 form signal storage subsystem, are placed in aircraft cabin；
Downward atmospheric thermal infrared radiation is reflected into optical fiber 8 by gold-plated diffusing reflection plate 3, and optical fiber 8 is by downward atmospheric thermal infrared
Radiation imports high-precision thermal infrared spectrum instrument 9.High-precision thermal infrared spectrum instrument 9 is recorded on the basis of the time and storage atmosphere downlink
Thermal infrared radiation data；
Coated plate temp probe 5 reaches local thermodynamic equilibrium by heat transfer and gold-plated diffusing reflection plate 3, and temperature signal is passed through
Data line 6 imports thermometer host 7.Thermometer host 7 is recorded on the basis of the time and storage temperature data.
2nd, data acquisition and atmospheric correction are carried out according to the airborne thermal infrared imaging spectrometer atmospheric correction system built, it is main
Want step as follows：
2.1 reference databases are established.To MODITRAN software air input parameter (Water Vapor Content, atmospheric model, gas
Colloidal sol pattern, cloud amount, surface air temperature, visibility, aircraft (or sensor) elevation, earth's surface elevation) it is configured, with as high as possible
Resolution ratio traversal be possible to value, generate aircraft elevation downward atmospheric thermal infrared radiation spectrum under different situations, earth's surface
Downlink radiation spectrum, atmospheric path radiation spectrum and atmospheric transmittance spectrum, establish reference database；
2.2 DATA REASONING.System is installed on aircraft, utilizes the system and airborne imaging spectrum instrument synchro measure aircraft
Elevation downward atmospheric thermal infrared radiation spectrum, gold-plated diffusing reflection plate temperature；
2.3 Spectral matchings and atmospheric correction.It is as follows：
2.3.1 according to gold-plated diffusing reflection plate temperature, the aircraft elevation downward atmospheric measured from high-precision thermal infrared spectrum instrument
Gold-plated diffusing reflection plate itself thermal infrared radiation part is deducted in thermal infrared radiation spectrum.Computational methods are：
Wherein：L↓Aircraft elevation downward atmospheric thermal infrared radiation after (λ) correction；LpanelIt is surveyed for high-precision thermal infrared spectrum instrument
The aircraft elevation downward atmospheric thermal infrared radiation measured；εpanelIt is 0.06 for the emissivity of gold-plated diffusing reflection plate；B(Tpanel)
For the black body radiation brightness corresponding to diffusing reflection plate, it is calculated by Planck law；TpanelFor gold-plated diffusing reflection plate temperature.
The downward atmospheric thermal infrared radiation of measurement and the downward atmospheric thermal infrared radiation in reference database are compared,
Search most matching aircraft elevation downward atmospheric thermal infrared radiation spectrum, find corresponding Earth Surface Atmosphere downlink thermal infrared radiation,
Atmospheric path radiation and the atmospheric transmittance curve of spectrum.
2.3.2 it is high that atmospheric model when being imaged with imaging spectrometer, aerosol model, aircraft are inquired from reference database
The corresponding one group of aircraft elevation downward atmospheric thermal infrared radiation of journey, ground elevation, Earth Surface Atmosphere downlink thermal infrared radiation, air journey
Radiation and atmospheric transmittance curve of spectrum data.
2.3.3 aircraft elevation downward atmospheric thermal infrared radiation and correction in curve of spectrum data set 2.3.2 obtained
Aircraft elevation downward atmospheric thermal infrared radiation spectrum is compared afterwards, is found out and aircraft elevation downward atmospheric thermal infrared spoke after correction
Penetrate spectrum mahalanobis distance minimum one, and inquire corresponding atmospheric path radiation and the atmospheric transmittance curve of spectrum.So as to
To optimal downward atmospheric thermal infrared radiation, atmospheric path radiation and atmospheric transmittance curve of spectrum correction parameter.
2.3.4 on the basis of the time, according to thermal infrared EO-1 hyperion radiation transfer equation, from the imaging after radiation calibration
Spectrometer is obtained in thermal infrared high-spectrum remote sensing data, is calculated the liftoff radiation spectrum of each pixel, realize thermal infrared into
As spectrometer atmospheric correction.Computational methods are
Wherein, L (λ) is obtained the spoke of any pixel in thermal infrared high-spectrum remote sensing data by airborne thermal infrared imaging spectrometer
It penetrates；Lg(λ) is the liftoff radiation of corresponding pixel；L↑(λ) and τ (λ) are respectively that the atmospheric path radiation that 2.3.3 is obtained and air are saturating
Cross rate spectrum.On the basis of the time, traverse airborne thermal infrared imaging spectrometer by above-mentioned formula and obtain thermal infrared high-spectrum remote-sensing
All pixels in data obtain the liftoff radiation spectrum of each pixel and its corresponding Earth Surface Atmosphere downlink thermal infrared radiation light
Spectrum completes atmospheric correction.The system and method that this patent proposes can obtain the atmospheric radiation information of pixel grade, improve solution really
It is qualitative, increase substantially airborne thermal infrared imaging spectrometer atmospheric correction precision.
Claims (1)
1. one kind is suitable for airborne thermal infrared imaging spectrometer atmospheric correction system, including stent (1), stabilized platform (2), gold-plated
Diffusing reflection plate (3), fiber fixed frame (4), coated plate temp probe (5), data line (6), thermometer host (7), optical fiber (8) and
High-precision thermal infrared spectrum instrument (9), it is characterised in that：
The stabilized platform (2) is fixed on stent (1), and gold-plated diffusing reflection plate (3), fiber fixed frame (4) are fixed on stabilization
On platform (2), coated plate temp probe (5) is fixed on gold-plated diffusing reflection plate (3), and optical fiber (8) is fixed on fiber fixed frame (4)
On；
The optical fiber (8) is connected with high-precision thermal infrared spectrum instrument (9), and optical fiber (8) reflects gold-plated diffusing reflection plate (3)
Downward atmospheric thermal infrared radiation imports high-precision thermal infrared spectrum instrument (9)；Coated plate temp probe (5) by data line (6) with
Thermometer host (7) connects, for measuring the temperature of gold-plated diffusing reflection plate (3)；
The stent (1), stabilized platform (2), gold-plated diffusing reflection plate (3), fiber fixed frame (4), coated plate temp probe
(5), data line (6) and optical fiber (8) composition signal collection subsystem, are fixed on the covering outside aircraft cabin；
The thermometer host (7) and high-precision thermal infrared spectrum instrument (9) composition signal storage subsystem, are placed in aircraft cabin
It is interior；
Downward atmospheric thermal infrared radiation is reflected into optical fiber (8) by the gold-plated diffusing reflection plate (3), and optical fiber (8) will be under air
Row thermal infrared radiation imports high-precision thermal infrared spectrum instrument (9)；High-precision thermal infrared spectrum instrument (9) is recorded simultaneously on the basis of the time
Storage atmosphere downlink thermal infrared radiation data；The coated plate temp probe (5) passes through heat transfer and gold-plated diffusing reflection plate (3)
Reach local thermodynamic equilibrium, by temperature signal by data line (6) import thermometer host (7), thermometer host (7) using the time as
Reference recording and storage temperature data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721113894.0U CN207528348U (en) | 2017-09-01 | 2017-09-01 | One kind is suitable for airborne thermal infrared imaging spectrometer atmospheric correction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721113894.0U CN207528348U (en) | 2017-09-01 | 2017-09-01 | One kind is suitable for airborne thermal infrared imaging spectrometer atmospheric correction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207528348U true CN207528348U (en) | 2018-06-22 |
Family
ID=62575573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721113894.0U Active CN207528348U (en) | 2017-09-01 | 2017-09-01 | One kind is suitable for airborne thermal infrared imaging spectrometer atmospheric correction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207528348U (en) |
-
2017
- 2017-09-01 CN CN201721113894.0U patent/CN207528348U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107687900A (en) | One kind is applied to airborne thermal infrared imaging spectrometer atmospheric correction system and method | |
| CN105300912B (en) | A variety of monitoring of hazardous gas systems based on absorption spectrum remote sensing technology | |
| Damm et al. | FLD-based retrieval of sun-induced chlorophyll fluorescence from medium spectral resolution airborne spectroscopy data | |
| US6297504B1 (en) | Method and apparatus for the imaging of gases | |
| Tan et al. | A comparison of radiometric correction techniques in the evaluation of the relationship between LST and NDVI in Landsat imagery | |
| Sugiura et al. | Correction of low-altitude thermal images applied to estimating soil water status | |
| CN103293116B (en) | Automatic continuous detection device of micro-pulse differential absorption lidar water vapor spatial and temporal distribution | |
| CN103293117A (en) | Inversion method of micro-pulse differential absorption lidar water vapor spatial and temporal distribution | |
| Seward et al. | Improved environmental monitoring of surface geothermal features through comparisons of thermal infrared, satellite remote sensing and terrestrial calorimetry | |
| US20120310578A1 (en) | Correcting noncontact infrared thermometer data by removing contamination of the intervening atmosphere | |
| CN107368617B (en) | Ground-air detection infrared imaging system action distance calculation method based on Lowtran7 atmospheric software | |
| CN113324656B (en) | Unmanned aerial vehicle-mounted infrared remote sensing earth surface heat anomaly detection method and system | |
| Gålfalk et al. | Approaches for hyperspectral remote flux quantification and visualization of GHGs in the environment | |
| CN114581791A (en) | Inversion method and system for atmospheric water vapor content based on MODIS data | |
| CN103809171B (en) | High speed passive ranging method based on oxygen absorption and multiple regression | |
| CN108120510A (en) | A kind of in-orbit absolute radiation calibration method of optical sensor based on reflection mirror array | |
| KR101768107B1 (en) | Quantitation methof for non-linear column density using radiative transfer model | |
| CN111781584B (en) | Target radiation O based 2 Passive ranging method of absorption-related K distribution method | |
| CN207528348U (en) | One kind is suitable for airborne thermal infrared imaging spectrometer atmospheric correction system | |
| CN108163223B (en) | Portable aircraft infrared stealth performance evaluation device and method | |
| US3970848A (en) | Profile technique for calibrating infrared thermal imaging systems | |
| CN110174652A (en) | A kind of calibrating method and device of the in-orbit emissivity of satellite-borne microwave imager antenna | |
| Yang et al. | A temperature and emissivity separation algortihm for chinese gaofen-5 satelltie data | |
| CA3057603A1 (en) | Determining gas concentration near planetary surfaces | |
| CN114623931A (en) | Temperature and emissivity measurement method and device with background radiation influence deducted |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |