CN1963468A - Method and apparatus for real time measuring permeation ratio of whole atmosphere by fixed star - Google Patents
Method and apparatus for real time measuring permeation ratio of whole atmosphere by fixed star Download PDFInfo
- Publication number
- CN1963468A CN1963468A CNA2006100977286A CN200610097728A CN1963468A CN 1963468 A CN1963468 A CN 1963468A CN A2006100977286 A CNA2006100977286 A CN A2006100977286A CN 200610097728 A CN200610097728 A CN 200610097728A CN 1963468 A CN1963468 A CN 1963468A
- Authority
- CN
- China
- Prior art keywords
- fixed star
- optical filter
- lambda
- different
- telescope
- 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.)
- Granted
Links
Images
Landscapes
- Spectrometry And Color Measurement (AREA)
Abstract
This invention discloses one method and device to real time test whole gas transparent rate by use of stellar irradiation, which uses telescope to trace certain stellar with different sections of filter slice for 350 to 700nm, wherein, the stellar irradiation is collected by telescope through different wave sections to output to strengthened CCD and then CCD converts the light intensity signals into electricity signals through collection card for image signals; the signals are stored by two bit type into computer as gas transparent basic data.
Description
Technical field
The invention belongs to a kind of optical measurement field, specifically is to utilize fixed star to measure the method for total atmospheric spectral transmittance in real time.
Background technology
Total atmospheric spectral transmittance is an important parameter of reflection atmospheric optics characteristic, has important value in application such as atmosphere radiation, RSER, environmental monitoring, extraterrestrial target monitoring.Under the situation of known Atmospheric Absorption gas content, aerosol optical characteristics and spatial characteristics, can utilize atmosphere radiation transmitting software (as MODTRAN) analog computation atmospheric transmittance.But it is very difficult in actual applications, obtaining absorption gas and aerocolloidal space distribution in real time.Therefore need set up measuring system directly measures total atmospheric spectral transmittance.The measuring technique of total atmospheric spectral transmittance is primarily aimed at daytime at present, measures as light source with the sun.But how to measure total atmospheric spectral transmittance in real time, there is no report in the document from every side at night.
Summary of the invention
The present invention proposes a kind of method and instrument that utilizes stellar radiation to measure total atmospheric spectral transmittance, realize evening fixed star being carried out the measurement of subrane radiation value, use the Langley-plot method that instrument is demarcated, calculate total atmospheric spectral transmittance.
Technical scheme of the present invention is as follows:
Utilize fixed star to measure the method for total atmospheric spectral transmittance in real time, it is characterized in that:
(1), utilize telescope to follow the tracks of certain day fixed star in the district, the optical filter of 350nm-700nm different-waveband is set behind telescopical eyepiece, stellar radiation is collected through telescope, respectively after the optical filter optical filtering through different-waveband, light focusing outputs to and strengthens on the CCD, strengthening being converted to electric signal after CCD amplifies light intensity signal earlier, is that binary numeral is kept in the computing machine through the image pick-up card collection with this electrical signal conversion again, the raw data that this numerical value calculates as atmospheric transmittance;
(2), the response constant C (λ) of view data measuring system:
C(λ)＝V
0(λ)/I
0(λ) (1)
Wherein, C (λ) is the response constant of measuring system, I
0(λ) be the extraatmospheric star spectrum intensity of this fixed star; LnV
0(λ) the measured value that measures for measuring system in extraatmospheric starlight radiation correspondence; Know I
0(λ), V
0(λ) just can calculate C (λ), the C (λ) that different λ is corresponding different;
When measuring whole layer of transmitance, know the sky external spectrum I of this fixed star
0(λ), the response constant C (λ) of measuring system just can obtain the radiant intensity measurement value of this measuring system at this fixed star at place, atmospheric envelope top:
V
0(λ)＝I
0(λ)C(λ) (2)
Like this, the stellar radiation intensity measurements V (λ) that measures at any time at ground observation point evening just can obtain passing the vertical transmitance T of whole atmosphere
v(λ) or the oblique journey atmospheric transmittance T (λ) of corresponding fixed star direction:
M (θ) is an air quality, and it changes with the variation of zenith angle θ.
The optical filter of described different wave length be amalgamation in certain sequence on a disk, by Single-chip Controlling, realize the automatic location and the rotation of optical filter dish, make telescope collect the stellar radiation of different-waveband when measuring at every turn.
Utilize fixed star to measure the instrument of total atmospheric spectral transmittance in real time, include optical measurement part and data handling system, it is characterized in that described optical measurement partly constitutes: be equipped with behind the telescope ocular rotatable by 350-700nm between the optical filter dish that is put together of a plurality of optical filters of different-waveband, be equipped with behind the optical filter dish and strengthen CCD, described enhancing CCD is positioned at the focus place of eyepiece, and the signal output part of described enhancing CCD is linked into data acquisition, disposal system.
Described optical filter is meant the optical filter of following centre wavelength: 300nm, 350nm, 400nm, 450nm, 500nm, 550nm, 600nm, 650nm, 700nm, 750nm, and bandwidth is 50nm.
From finding both domestic and external, it is still blank at present to utilize stellar radiation to measure the total atmospheric spectral transmittance means, and practical, reliable instrument does not also have.
The present invention has developed compact conformation, easy to use, total atmospheric spectral transmittance measuring instrument that real-time is good.The correction and other purposes that can be used for the extraterrestrial target brightness measurement.
Utilizing evening stellar radiation to measure atmospheric transmittance is the work of an innovation, has realized utilizing evening the weak radiation of fixed star first, adopts image intensifier+CCD (ICCD) Detection Techniques and fixed star roaming technology can measure the atmospheric transmittance in certain day district in real time.Utilize the radiation spectrum and the MODTRAN analog computation of standard star that measurement result is verified, the measurement result that proves the total atmospheric spectral transmittance instrument is that precision is less than 10% index request substantially reliably.
Description of drawings
Fig. 1 is an index path of the present invention.
Fig. 2 is the variation of the logarithm of measurement data of the present invention with air quality.
Fig. 3 be Da Cheng transmitance of the present invention over time.
Embodiment
Utilize fixed star to measure the instrument of total atmospheric spectral transmittance in real time, include optical measurement part and data handling system, optical measurement partly constitutes: behind telescope 1 eyepiece 2 rotatable optical filter dish 3 is installed, be equipped with behind the optical filter dish 3 and strengthen CCD4, described enhancing CCD4 is positioned at the focus place of eyepiece 2, and the signal output part of described enhancing CCD is linked into data acquisition, disposal system.The optical filter dish is put together by the optical filter of following centre wavelength: 300nm, 350nm, 400nm, 450nm, 500nm, 550nm, 600nm, 650nm, 700nm, 750nm, bandwidth is 50nm.Optical filter is by Single-chip Controlling location and switching fast automatically.
Telescope 1: adopt 14 " the catadioptric formula astronomical telescope 14 of Shi Mite-Cassegrain " LX200GPS-SMT, existing heavy caliber daylighting characteristics have high-quality and the high resolving power that is refracted to imaging after the focus after the reflection again, primary mirror diameter 370mm, clean bore 356mm, burnt long 3556mm, coke ratio f10, resolution 0.32 second of arc, limit visual magnitude 18.5,0.65 ° of range of telescope; Telescope any one space in the database (145000 space targets) be can drive automatically, can (longitude, latitude, temporal information) and realization full-automatic tracking be located automatically by GPS; Be with 8 * 50 guiding telescopes; Can slightly set the goal with it earlier during tracking; It is nine etc. adjustable that travelling speed is divided; Can generate the roaming table and realize multiple target tracking.
Strengthen choosing of CCD: the ICCD-1XZ18/18WS-7 that selects for use northern night vision company to produce according to calculating.Can adjust yield value by voltage, ride gain is with the XICOR programmable resistance X9C103 of company in the test, it is numerically controlled trimmer resistor, the electric resistance array that includes 99 resistance units, adjust the gain-controlled voltage value with it, every grade of precision is 0.25V, obtains the pairing yield value of each control magnitude of voltage by manufacturer's calibration.
Star catalogue is selected: according to the Ba Gu star catalogue, this satellite is that European Space Agency launched on August 8th, 1989, be specifically designed to the satellite of astronomical surveing, the fixed star data of surveying are subjected to atmospheric effect very little, data such as 118 218 point-device right ascensions of celestial body of whole day, declination, spectrum in star catalogue, have been write down, its position intermediate value precision is approximately 1 milli rad, therefore with according to the Ba Gu star catalogue as data source, established the basis of star place precision.
Fixed star is followed the tracks of: can be according to selecting required fixed star to measure according to Ba Gu star catalogue (comprising tens0000 fixed star data).Also comprise the required fixed star parameter (longitude and latitude, exoatmosphere radiation spectrum etc.) of transmitance calculating in the star catalogue.In measuring process, utilize telescope to follow the tracks of certain day fixed star in the district, tracking has two kinds: first method is the parameter (star names or right ascension, declination) of a plurality of fixed stars that input will be measured to telescope in a certain order, drives telescope and follows the tracks of one by one.Second method is to write fixed star roaming program, directly controls telescope by the RS232 serial ports and follows the tracks of fixed star one by one.The roaming program downloads in the telescopical joystick after can writing with textual form, also can directly generate on Autostar Suite software interface.By telescope in real time the fixed star parameter of output and continuous observed result, can prove that it can one by one accurately follow the tracks of many fixed stars.
Stellar radiation is measured: more weak stellar radiation is collected through telescope, light focusing output.Automatically control the rotation of optical filter dish by single-chip microcomputer, the switching of control different wave length optical filter, can measure the radiation value of different-waveband (350-700nm), very weak through the radiation value after filtering, through images acquired again after strengthening CCD (ICCD) and earlier strength signal being amplified.The raw data that view data is calculated as transmitance.
The response constant C (λ) of view data measuring system:
C(λ)＝V
0(λ)/I
0(λ) (1)
Wherein, I
0(λ) be the star spectrum intensity (no atmospheric attenuation) in the atmosphere external world of this fixed star, lnV
0(λ) be the apparatus measures value of instrument in the starlight radiation correspondence of zenith position (no atmospheric attenuation) measurement.The purpose of instrument calibration calculates lnV exactly
0(λ).Know I
0(λ), V
0(λ) just can calculate C (λ), the C (λ) that different λ is corresponding different;
When measuring whole layer of transmitance, know the sky external spectrum I of this fixed star
0(λ) (by providing) according to the Ba Gu star catalogue, the response constant C (λ) of measuring system just can obtain the systematic survey value of this measuring system at this fixed star at place, atmospheric envelope top (no atmospheric attenuation):
V
0(λ)＝I
0(λ)C(λ) (2)
Like this, the stellar radiation intensity measurements V (λ) that measures at any time at ground observation point evening just can obtain passing the vertical transmitance T of whole atmosphere
v(λ) or the oblique journey atmospheric transmittance T (λ) of corresponding fixed star direction:
M (θ) is an air quality, and it changes with the variation of zenith angle θ.
The model experiment result:
On Dec 15th, 2005, night was fine, cloudless, calm, and no dew selects this day to demarcate.Select during measurement the HIP102098 fixed star (DEC.=+45 ° 18 ' 11 ", R.A.=20: 41: 38, magnitude: 1.3, spectrum types: A2I) be reference star, its zenith angle from 41 ° 54 ' change to 75 ° 00 '.In each observation data of measuring wave band, obtain the variation diagram 2 of the logarithm of measured data with air quality according to this star, the oblique journey transmitance of each wave band atmosphere is over time as Fig. 3.
Claims (4)
1, utilize fixed star to measure the method for total atmospheric spectral transmittance in real time, it is characterized in that:
(1), utilize telescope to follow the tracks of certain day fixed star in the district, the optical filter of 350nm-700nm different-waveband is set behind telescopical eyepiece, stellar radiation is collected through telescope, respectively after the optical filter optical filtering through different-waveband, light focusing outputs to and strengthens on the CCD, strengthening being converted to electric signal after CCD amplifies light intensity signal earlier, is that binary numeral is kept in the computing machine through the image pick-up card collection with this electrical signal conversion again, the raw data that this numerical value calculates as atmospheric transmittance;
(2), the response constant C (λ) of view data measuring system:
C(λ)＝V
0(λ)/I
0(λ) (1)
Wherein, C (λ) is the response constant of measuring system, I
0(λ) be the extraatmospheric star spectrum intensity of this fixed star; InV
0(λ) the measured value that measures for measuring system in extraatmospheric starlight radiation correspondence; Know I
0(λ), v
0(λ) just can calculate C (λ), the C (λ) that different λ is corresponding different;
When measuring whole layer of transmitance, know the sky external spectrum I of this fixed star
0(λ), the response constant C (λ) of measuring system just can obtain the radiant intensity measurement value of this measuring system at this fixed star at place, atmospheric envelope top:
V
0(λ)＝I
0(λ)C(λ) (2)
Like this, the stellar radiation intensity measurements V (λ) that measures at any time at ground observation point evening just can obtain passing the vertical transmitance T of whole atmosphere
V(λ) or the oblique journey atmospheric transmittance T (λ) of corresponding fixed star direction:
M (θ) is an air quality, and it changes with the variation of zenith angle θ.
2, method according to claim 1, the optical filter that it is characterized in that described different wave length is that amalgamation in certain sequence is on a disk, by Single-chip Controlling, realize the automatic location and the rotation of optical filter dish, make telescope collect the stellar radiation of different-waveband when measuring at every turn.
3, utilize fixed star to measure the instrument of total atmospheric spectral transmittance in real time, include optical measurement part and data handling system, it is characterized in that described optical measurement partly constitutes: be equipped with behind the telescope ocular rotatable by 350-700nm between the optical filter dish that is put together of a plurality of optical filters of different-waveband, be equipped with behind the optical filter dish and strengthen CCD, described enhancing CCD is positioned at the focus place of eyepiece, and the signal output part of described enhancing CCD is linked into data acquisition, disposal system.
4, instrument according to claim 3 is characterized in that described optical filter is meant the optical filter of following centre wavelength: 300nm, 350nm, 400nm, 450nm, 500nm, 550nm, 600nm, 650nm, 700nm, 750nm, and bandwidth is 50nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100977286A CN100526858C (en) | 2006-11-21 | 2006-11-21 | Method and apparatus for real time measuring permeation ratio of whole atmosphere by fixed star |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100977286A CN100526858C (en) | 2006-11-21 | 2006-11-21 | Method and apparatus for real time measuring permeation ratio of whole atmosphere by fixed star |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1963468A true CN1963468A (en) | 2007-05-16 |
| CN100526858C CN100526858C (en) | 2009-08-12 |
Family
ID=38082609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100977286A Expired - Fee Related CN100526858C (en) | 2006-11-21 | 2006-11-21 | Method and apparatus for real time measuring permeation ratio of whole atmosphere by fixed star |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100526858C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792009A (en) * | 2014-01-26 | 2014-05-14 | 中国科学院长春光学精密机械与物理研究所 | Infrared radiation calibration method of foundation large-caliber telescope |
| CN104634765A (en) * | 2015-03-05 | 2015-05-20 | 姜志富 | Device and method for measuring atmospheric transmissivity by optical radiation measurement instrument |
| CN106769931A (en) * | 2016-12-19 | 2017-05-31 | 中国科学院合肥物质科学研究院 | A kind of multi-wavelength total atmospheric spectral transmittance real-time measurement apparatus round the clock |
| CN106990074A (en) * | 2017-04-25 | 2017-07-28 | 中国科学院合肥物质科学研究院 | The multiple laser wavelength total atmospheric spectral transmittances of near-infrared and total precipitable water measuring instrument |
| CN108375554A (en) * | 2018-02-23 | 2018-08-07 | 西安应用光学研究所 | Horizontal infrared atmospheric spectral transmittance appraisal procedure |
| CN108469418A (en) * | 2018-02-27 | 2018-08-31 | 中国科学院国家天文台 | Measure the method and optical filter V of FGK type stellar metallicitiesSAGE |
| CN108982425A (en) * | 2018-07-25 | 2018-12-11 | 中国科学院合肥物质科学研究院 | A kind of device measuring atmospheric transmittance and steam column content |
| CN111696093A (en) * | 2020-06-12 | 2020-09-22 | 北京环境特性研究所 | Relative measuring method and device for radiation illumination of fixed star |
| CN111796414A (en) * | 2020-08-17 | 2020-10-20 | 中国科学院上海天文台 | Telescope automatic focusing method based on arc length change between fixed stars |
| CN112484846A (en) * | 2020-11-12 | 2021-03-12 | 北京环境特性研究所 | Method and device for measuring radiation illumination of air point target by using infrared band |
| CN114337998A (en) * | 2020-10-09 | 2022-04-12 | 国科量子通信网络有限公司 | Method and system for estimating code quantity based on star-earth quantum key distribution |
-
2006
- 2006-11-21 CN CNB2006100977286A patent/CN100526858C/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792009B (en) * | 2014-01-26 | 2016-11-09 | 中国科学院长春光学精密机械与物理研究所 | The Calibration of Infrared Radiation of ground large aperture telescope |
| CN103792009A (en) * | 2014-01-26 | 2014-05-14 | 中国科学院长春光学精密机械与物理研究所 | Infrared radiation calibration method of foundation large-caliber telescope |
| CN104634765A (en) * | 2015-03-05 | 2015-05-20 | 姜志富 | Device and method for measuring atmospheric transmissivity by optical radiation measurement instrument |
| CN104634765B (en) * | 2015-03-05 | 2017-06-23 | 姜志富 | The apparatus and method that atmospheric transmittance is measured based on optical radiation measuring instrument |
| CN106769931A (en) * | 2016-12-19 | 2017-05-31 | 中国科学院合肥物质科学研究院 | A kind of multi-wavelength total atmospheric spectral transmittance real-time measurement apparatus round the clock |
| CN106769931B (en) * | 2016-12-19 | 2019-05-03 | 中国科学院合肥物质科学研究院 | A kind of multi-wavelength total atmospheric spectral transmittance real-time measurement apparatus round the clock |
| CN106990074B (en) * | 2017-04-25 | 2021-04-02 | 中国科学院合肥物质科学研究院 | Near-infrared multi-laser-band whole-layer atmosphere transmittance and water vapor total amount measuring instrument |
| CN106990074A (en) * | 2017-04-25 | 2017-07-28 | 中国科学院合肥物质科学研究院 | The multiple laser wavelength total atmospheric spectral transmittances of near-infrared and total precipitable water measuring instrument |
| CN108375554A (en) * | 2018-02-23 | 2018-08-07 | 西安应用光学研究所 | Horizontal infrared atmospheric spectral transmittance appraisal procedure |
| CN108469418A (en) * | 2018-02-27 | 2018-08-31 | 中国科学院国家天文台 | Measure the method and optical filter V of FGK type stellar metallicitiesSAGE |
| CN108982425A (en) * | 2018-07-25 | 2018-12-11 | 中国科学院合肥物质科学研究院 | A kind of device measuring atmospheric transmittance and steam column content |
| CN108982425B (en) * | 2018-07-25 | 2021-06-18 | 中国科学院合肥物质科学研究院 | Device for measuring atmospheric transmission rate and water vapor column content |
| CN111696093A (en) * | 2020-06-12 | 2020-09-22 | 北京环境特性研究所 | Relative measuring method and device for radiation illumination of fixed star |
| CN111796414A (en) * | 2020-08-17 | 2020-10-20 | 中国科学院上海天文台 | Telescope automatic focusing method based on arc length change between fixed stars |
| CN111796414B (en) * | 2020-08-17 | 2022-04-15 | 中国科学院上海天文台 | Telescope automatic focusing method based on arc length change between fixed stars |
| CN114337998A (en) * | 2020-10-09 | 2022-04-12 | 国科量子通信网络有限公司 | Method and system for estimating code quantity based on star-earth quantum key distribution |
| CN114337998B (en) * | 2020-10-09 | 2024-03-01 | 国科量子通信网络有限公司 | Method and system for estimating code amount of star-to-ground quantum key distribution based on star |
| CN112484846A (en) * | 2020-11-12 | 2021-03-12 | 北京环境特性研究所 | Method and device for measuring radiation illumination of air point target by using infrared band |
| CN112484846B (en) * | 2020-11-12 | 2023-06-02 | 北京环境特性研究所 | Method and device for measuring target radiation illuminance of aerial point by utilizing infrared band |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100526858C (en) | 2009-08-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100526858C (en) | Method and apparatus for real time measuring permeation ratio of whole atmosphere by fixed star | |
| CN102053010B (en) | Testing device and method for defocused spot and color bias of optical system | |
| CN102169048B (en) | Atmospheric turbulence detection simulator used for self-adaptive optical system | |
| CN102927982B (en) | Double-spectrum autonomous navigation sensor and design method of double-spectrum autonomous navigation sensor | |
| CN100586406C (en) | Transmission type artificial crystal optical aberration hartmann measuring apparatus | |
| CN101109699A (en) | Multiple shaft differential optical absorption spectrometry method and apparatus for detecting vertical distribution of atmospheric composition | |
| CN103776445B (en) | Amplitude-division polarization navigation angle sensing design method and device | |
| CN102879110B (en) | Adaptive optical system based on modulation and modulation-free combined pyramid wave-front sensor | |
| CN106813575A (en) | The outer blindage position measuring system of coronagraph and location measurement method | |
| CN103471820A (en) | Real-time revising tester for portable multi-spectral optoelectronic device | |
| Baidar et al. | Development of a digital mobile solar tracker | |
| CN113075694B (en) | Multi-band star light imaging photometer and detection method thereof | |
| CN102221538A (en) | Device and method for measuring optical loss coefficient of infrared glass | |
| CN113720805A (en) | Method for detecting radiation transmittance of dust and stain on lens of outfield photoelectric detection system | |
| CN103487010A (en) | Three-ring apodization filter based system and method used for measuring isoplanatic angles | |
| Gray | The inferred color index of the Sun | |
| CN110657959A (en) | Universal device for detecting performance of photoelectric night vision instrument | |
| CN106767679A (en) | A kind of photoelectric auto-collimation theodolite | |
| CN101832816B (en) | Sky background light measuring device in space laser communication | |
| CN201166552Y (en) | Laser alignment type optical longitude-latitude measuring apparatus | |
| US6713764B2 (en) | Field based spectral radiometer | |
| CN203323738U (en) | Isoplanatic angle measurement system based on tricyclic apodization mirror | |
| CN101221089A (en) | Main mirror face deformation detecting method and system for space reflection type optical remote sensor | |
| GB1569306A (en) | Night guiding device for missiles | |
| CN201540198U (en) | Tester for disc of confusion and color bias of optical system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090812 Termination date: 20121121 |