CN109900655A - Optical thickness spectromonitor for satellite calibration - Google Patents
Optical thickness spectromonitor for satellite calibration Download PDFInfo
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- CN109900655A CN109900655A CN201910282082.6A CN201910282082A CN109900655A CN 109900655 A CN109900655 A CN 109900655A CN 201910282082 A CN201910282082 A CN 201910282082A CN 109900655 A CN109900655 A CN 109900655A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 87
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- 230000009466 transformation Effects 0.000 claims abstract description 7
- 239000000700 radioactive tracer Substances 0.000 claims description 24
- 230000005622 photoelectricity Effects 0.000 claims description 2
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Abstract
The present invention relates to applications of atmospheric remote sensing techniques fields, in particular a kind of optical thickness spectromonitor for satellite calibration, it is characterized in that, including terrestrial surface radiation standard source, optics receives system, optical spectroscopic system, photoelectric detecting system and control and calibration control system, the radiation spectrum of terrestrial surface radiation standard source transmitting standard, it includes telescope and field stop that optics, which receives system, the optical radiation ultraviolet band that optical spectroscopic system receives telescope, visible light wave range and infrared band, photoelectric detecting system completes photoelectric signal transformation and acquisition, control and the operation control of calibration control system control whole system and standard spectrum calibration and the output of etalon optical power product.The present invention reduces power-supply fluctuation, the fixed brought influence of flashing, can obtain the output data of etalon optical power product in real time.
Description
Technical field
The present invention relates to applications of atmospheric remote sensing techniques field, specially a kind of optical thickness spectrum monitoring for satellite calibration
Instrument.
Background technique
Atmosphere optical thickness extinction coefficient is characterization atmospheric medium to attenuation degree along the integral in propagation in atmosphere path
Characteristic.When calculating radiation transmission, it is a nothing that absorption and scatterer, which generate total weak, on unit section area
Dimensional quantity.
It, can be because interacting (scattering absorbs) and weakening with medium (aerosol) when radiation is propagated in the medium.At this
Under the premise of a, optical thickness characterization is transparency.Understand for the ease of visualization, mist can be analogized to, in observer and
Mist between object can obstruct the light that object is reflected towards observer, and optics (refers to mesh with a thickness of 0 when object is in face of observer
Mark the corresponding optical thickness of object be 0), when object far from when, optical thickness will will increase, until the object is as far as cannot be seen
Until seeing (the corresponding optical thickness of distant object object).When atmospheric condition is constant, optical thickness is also constant, it is represented greatly
The optical characteristics of gas is physical quantity critically important in atmospheric radiation and atmospheric optics.Therefore in satellite calibration, it can use light
The calibration for demarcating satellite data for a long time can be carried out by learning the data that thickness spectromonitor obtains.
Satellite remote sensing is exactly aerosol optical depth to one of the staple product of aerosol.Although the data of satellite remote sensing has
There is the advantages that spatial dimension is wide, high resolution, and time continuity is good, but since the algorithm of its own is constantly improving always
In, while its influence vulnerable to various factors such as different regions and different surface albedos, remain it
The deficiency of precision aspect, therefore when using the data, Ying Shouxian carries out school mark using surface observations as much as possible.
Summary of the invention
The purpose of the present invention is to provide a kind of optical thickness spectromonitors for satellite calibration, to solve above-mentioned back
The problem of being proposed in scape technology.The optical thickness spectromonitor for satellite calibration has etalon optical power product
Export precision feature with higher.
To achieve the above object, the invention provides the following technical scheme:
A kind of optical thickness spectromonitor for satellite calibration, including terrestrial surface radiation standard source, optics receive system,
Optical spectroscopic system, photoelectric detecting system and control and calibration control system, in which: emit to the terrestrial surface radiation standard source
The radiation spectrum of standard is input to switching as reference signal, the reference signal, tracer signal as tracer signal, solar radiation
Device, the optical spectroscopic system receive reference signal, the optical radiation ultraviolet band in tracer signal, it is seen that optical band and red
Outer optical band, and it is sent into photoelectric detecting system, the photoelectric detecting system completes photoelectric signal transformation and acquisition, and passes through control
Operation control and standard spectrum calibration and the output of etalon optical power product with calibration control system control whole system.
Preferably, the optics receives system including at least one group of telescope and field stop, and field stop setting exists
In the phase plane of telescope objective.
Preferably, it includes two groups of telescopes, field stops that the optics, which receives system, respectively corresponds receiving by switching dress
Reference signal, the tracer signal set.
Preferably, the photoelectric detecting system include binary channels preamplifier, gain controller I, gain controller II,
Photomultiplier tube I and photomultiplier tube II, in which: the binary channels preamplifier input connection optical spectroscopic system, it is defeated
It is separately connected gain controller I, gain controller II out, the gain controller I, gain controller II are connected to control and mark
Determine control system.
Preferably, it includes one group of telescope, field stop that the optics, which receives system, receives the record Jing Guo switching device
Signal.
Preferably, the photoelectric detecting system includes preamplifier, preamplifier input connection optical spectroscopic system
System, output are sequentially connected with gain controller, photomultiplier tube and lock-in amplifier, the lock-in amplifier be connected to control and
Demarcate control system.
Preferably, the control and calibration control system are based on industrial personal computer.
Compared with prior art, the beneficial effects of the present invention are:
Optical thickness monitor of the invention includes terrestrial surface radiation standard source, and optics receives system, optical spectroscopic system, light
The composition such as electrical resistivity survey examining system and control and calibration control system (built-in control software).Terrestrial surface radiation standard source emits standard
Radiation spectrum, it includes telescope and field stop, the optics spoke that optical spectroscopic system receives telescope that optics, which receives system,
Penetrate ultraviolet band, it is seen that optical band and infrared band, photoelectric detecting system complete photoelectric signal transformation and acquisition, control and mark
Surely it controls the operation control of software control whole system and standard spectrum is calibrated and the output of etalon optical power product.This hair
It is bright, using satellite remote sensing data when, accomplished to carry out school mark using surface observations as much as possible, etalon optical power produces
The output of product precision with higher.
The present invention is analyzed by reference to signal and tracer signal processing, reduces power-supply fluctuation, flashing is determined to be brought
Influence, the output data of etalon optical power product can be obtained in real time.
Detailed description of the invention
Fig. 1 is principle schematic diagram of the present invention；
Fig. 2 is 1 photoelectric detecting system schematic illustration of the embodiment of the present invention；
Fig. 3 is 2 photoelectric detecting system schematic illustration of the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
Fig. 1,2 are please referred to, the present invention provides a kind of technical solution:
A kind of optical thickness spectromonitor for satellite calibration, including terrestrial surface radiation standard source, optics receive system,
Optical spectroscopic system, photoelectric detecting system and control and calibration control system, in which: emit to the terrestrial surface radiation standard source
The radiation spectrum of standard is input to switching as reference signal, the reference signal, tracer signal as tracer signal, solar radiation
Device, the optical spectroscopic system receive reference signal, the optical radiation ultraviolet band in tracer signal, it is seen that optical band and red
Outer optical band, and it is sent into photoelectric detecting system, in the present embodiment, it includes two groups of telescopes, two groups of views that the optics, which receives system,
Field diaphragm, respectively corresponds and receives corresponding reference signal, tracer signal Jing Guo switching device, and the photoelectric detecting system completes light
Electric signal conversion and acquisition, and pass through and control and demarcate operation control and standard spectrum calibration that control system controls whole system
And the output of etalon optical power product.
The photoelectric detecting system includes binary channels preamplifier, gain controller I, gain controller II, photoelectricity times
Increase pipe I and photomultiplier tube II, in which: the binary channels preamplifier input connection optical spectroscopic system, output difference
Gain controller I, gain controller II are connected, the gain controller I, gain controller II are connected to control and calibration control
System, the control and calibration control system are based on industrial personal computer.
In the present embodiment, terrestrial surface radiation standard source terrestrial surface radiation standard source, as tracer signal V1, solar radiation is as ginseng
Examine signal V0, and optical thickness corresponding to reference signal is 0, the corresponding optical thickness of tracer signal will be (as distance increases
It is big and) increase, as N, N > 0, two telescopes that optics receives system are connect corresponding reference the letter received by optical spectroscopic system
Number, optical radiation ultraviolet band in tracer signal, it is seen that optical band and infrared band, photoelectric detecting system complete photosignal
Conversion and acquisition, in the process, V0、V1Into binary channels preamplifier, then V0It is corresponding to enter gain controller I finally
Into photomultiplier tube I, V1The corresponding gain controller II that enters finally enters photomultiplier tube II, due to V0By and V1It is identical
Binary channels preamplifier, gain controller I and gain controller II, photomultiplier tube I and photomultiplier tube II, it is rear to obtain
One and V1With frequency, same to phase, but the signal value that amplitude is different, V in this measurement, calibration process0Be it is invariable, optical thickness is
0, V is shown by controlling and demarcating control system1When changing with atmospheric condition, optical thickness optical thickness is N, is become therewith
Change.The value that optical thickness change can be obtained in real time, improves the accuracy of detection, and precision is higher, improves Near The Extreme Point
Interpretation precision, and keep the work of entire monitor more stable.
Embodiment 2
Fig. 1,3 are please referred to, the present invention provides a kind of technical solution:
A kind of optical thickness spectromonitor for satellite calibration, including terrestrial surface radiation standard source, optics receive system,
Optical spectroscopic system, photoelectric detecting system and control and calibration control system, in which: the terrestrial surface radiation standard source
The radiation spectrum of transmitting standard passes through switching device as reference signal, the reference signal as tracer signal, solar radiation
It is sent directly into photoelectric detecting system, the tracer signal is sent into optics by switching device and receives system, described in the present embodiment
It includes one group of telescope, field stop that optics, which receives system, receives the corresponding tracer signal after distant object object, described
The optical spectroscopic system receives the optical radiation ultraviolet band in tracer signal, it is seen that optical band and infrared band, and give
Enter photoelectric detecting system, the photoelectric detecting system completes photoelectric signal transformation and acquisition, and passes through control and calibration control system
The operation control and standard spectrum calibration and the output of etalon optical power product of system control whole system.
The photoelectric detecting system includes preamplifier, preamplifier input connection optical spectroscopic system, output
It is sequentially connected with gain controller, photomultiplier tube and lock-in amplifier, the lock-in amplifier is connected to control and calibration control
System processed, the control and calibration control system are based on industrial personal computer.
In the present embodiment, terrestrial surface radiation standard source terrestrial surface radiation standard source, as tracer signal V1, solar radiation is as ginseng
Examine signal V0, and optical thickness corresponding to reference signal is 0, the corresponding optical thickness of tracer signal will be (as distance increases
It is big and) increase, as N, N > 0, V0The lock-in amplifier in photoelectric detecting system is directly sent to by switching device, and V1Then pass through
Cross optical radiation ultraviolet waves in the reference signal, tracer signal that optical spectroscopic system receives the telescope that optics receives system
Section, it is seen that optical band and infrared band, photoelectric detecting system complete photoelectric signal transformation and acquisition, i.e. V1Sequentially enter preposition
Amplifier, gain controller, photomultiplier tube and lock-in amplifier, V0、V1Noise is filtered out by lock-in amplifier, realizes height
The exact value that the voltage signal inspection of signal-to-noise ratio obtains optical thickness change by controlling and demarcating control system again.
In the present invention, preamplifier uses Phillips777 type, and binary channels preamplifier uses 5Gbps fully differential
Both-end light receiving pre-amplifier, lock-in amplifier SR830, industrial personal computer use embedded IP C610L industrial personal computer, built-in control
Program and calibration control software (i.e. built-in to control software), reading/preservation data and waveform show/spectrum analysis function.
In the present invention, industrial personal computer connects and controls the normal fortune that terrestrial surface radiation standard source, switching device, optics receive system
Row and work, switching device use the prism with driving motor, constitute rotating prism, control its rotation by industrial personal computer,
To switch output signal.
Optical thickness monitor of the invention includes terrestrial surface radiation standard source, and optics receives system, optical spectroscopic system, light
The composition such as electrical resistivity survey examining system and control and calibration control system.Terrestrial surface radiation standard source emits the radiation spectrum of standard, optics
Receiving system includes telescope and field stop, and the optical radiation ultraviolet band that optical spectroscopic system receives telescope can
Light-exposed wave band and infrared band, photoelectric detecting system complete photoelectric signal transformation and acquisition, control and demarcate in control system
Control software is set, the operation control of whole system is controlled and standard spectrum is calibrated and the output of etalon optical power product.This
Invention, using satellite remote sensing data when, accomplished to carry out school mark, etalon optical power using surface observations as much as possible
The output of product precision with higher.
The present invention is analyzed by reference to signal and tracer signal processing, reduces power-supply fluctuation, flashing is determined to be brought
Influence, the output data of etalon optical power product can be obtained in real time.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of optical thickness spectromonitor for satellite calibration, which is characterized in that including terrestrial surface radiation standard source, optics
Receive system, optical spectroscopic system, photoelectric detecting system and control and calibration control system, in which: the terrestrial surface radiation mark
Emit to quasi- source the radiation spectrum of standard as tracer signal, solar radiation is as reference signal, the reference signal, tracer signal
It is input to switching device, the optical spectroscopic system receives reference signal, the optical radiation ultraviolet band in tracer signal, it is seen that
Optical band and infrared band, and it is sent into photoelectric detecting system, the photoelectric detecting system completes photoelectric signal transformation and acquisition,
And control system controls the operation control of whole system and standard spectrum is calibrated and etalon optical power by controlling and demarcating
The output of product.
2. a kind of optical thickness spectromonitor for satellite calibration according to claim 1, it is characterised in that: described
Optics receives system including at least one group of telescope and field stop, which is arranged in the phase plane of telescope objective
On.
3. a kind of optical thickness spectromonitor for satellite calibration according to claim 2, it is characterised in that: described
It includes two groups of telescopes, field stops that optics, which receives system, respectively correspond receive reference signal Jing Guo switching device, record is believed
Number.
4. a kind of optical thickness spectromonitor for satellite calibration according to claim 3, it is characterised in that: described
Photoelectric detecting system includes binary channels preamplifier, gain controller I, gain controller II, photomultiplier tube I and photoelectricity
Multiplier tube II, in which: the binary channels preamplifier input connection optical spectroscopic system, output are separately connected gain controller
I, gain controller II, the gain controller I, gain controller II are connected to control and calibration control system.
5. a kind of optical thickness spectromonitor for satellite calibration according to claim 2, it is characterised in that: described
It includes one group of telescope, field stop that optics, which receives system, receives the tracer signal Jing Guo switching device.
6. a kind of optical thickness spectromonitor for satellite calibration according to claim 5, it is characterised in that: described
Photoelectric detecting system includes preamplifier, and preamplifier input connection optical spectroscopic system, output is sequentially connected with gain
Controller, photomultiplier tube and lock-in amplifier, the lock-in amplifier are connected to control and calibration control system.
7. a kind of optical thickness spectromonitor for satellite calibration, special described according to claim 1~any one of 6
Sign is: the control and calibration control system are based on industrial personal computer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910282082.6A CN109900655A (en) | 2019-04-09 | 2019-04-09 | Optical thickness spectromonitor for satellite calibration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147078A (en) * | 2020-09-22 | 2020-12-29 | 华中农业大学 | Multi-source remote sensing monitoring method for crop phenotype information |
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| US7656526B1 (en) * | 2006-07-21 | 2010-02-02 | University Corporation For Atmospheric Research | Lidar system for remote determination of calibrated, absolute aerosol backscatter coefficients |
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| JP2013108843A (en) * | 2011-11-21 | 2013-06-06 | National Institute Of Advanced Industrial & Technology | Calibration method of spectroradiometer |
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| CN108828624A (en) * | 2018-06-29 | 2018-11-16 | 中科院合肥技术创新工程院 | A kind of atmosphere Rayleigh echo optical signal method of reseptance and device that highly sensitive and high linearity is taken into account |
| CN108981916A (en) * | 2018-08-01 | 2018-12-11 | 合肥中科九衡科技有限公司 | A kind of collecting method based on multichannel filter radiometer |
| CN209656554U (en) * | 2019-04-09 | 2019-11-19 | 合肥九天卫星科技有限公司 | Optical thickness spectromonitor for satellite calibration |
-
2019
- 2019-04-09 CN CN201910282082.6A patent/CN109900655A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7656526B1 (en) * | 2006-07-21 | 2010-02-02 | University Corporation For Atmospheric Research | Lidar system for remote determination of calibrated, absolute aerosol backscatter coefficients |
| RU2432554C1 (en) * | 2010-02-27 | 2011-10-27 | Государственное Научное Учреждение "Институт Физики Имени Б.И. Степанова Национальной Академии Наук Беларуси" | Method for radiation calibration of high spatial resolution satellite sensor |
| JP2013108843A (en) * | 2011-11-21 | 2013-06-06 | National Institute Of Advanced Industrial & Technology | Calibration method of spectroradiometer |
| CN105444881A (en) * | 2015-12-14 | 2016-03-30 | 中国科学院合肥物质科学研究院 | Self-correcting atmosphere-earth surface optical radiation characteristic observer |
| CN108828624A (en) * | 2018-06-29 | 2018-11-16 | 中科院合肥技术创新工程院 | A kind of atmosphere Rayleigh echo optical signal method of reseptance and device that highly sensitive and high linearity is taken into account |
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| CN112147078A (en) * | 2020-09-22 | 2020-12-29 | 华中农业大学 | Multi-source remote sensing monitoring method for crop phenotype information |
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