CN209214634U - A kind of star simulator calibration and self-collimation measurement system based on total optical path - Google Patents
A kind of star simulator calibration and self-collimation measurement system based on total optical path Download PDFInfo
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- CN209214634U CN209214634U CN201920118412.3U CN201920118412U CN209214634U CN 209214634 U CN209214634 U CN 209214634U CN 201920118412 U CN201920118412 U CN 201920118412U CN 209214634 U CN209214634 U CN 209214634U
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Abstract
The utility model provides a kind of star simulator calibration and self-collimation measurement system based on total optical path, so that star simulator and star sensor height is accurately mounted on setting position, realizes the collimation of both star sensor and star simulator optical axis.The emergent pupil of star simulator and the optical lens system of star simulator have certain spacing, star simulator is designed based on this characteristic, make star simulator optical texture under conditions of meeting star simulator calibrating function, the camera lens of star simulator is bigger than the entrance pupil of star sensor, then when light is full of entire optical lens system, some light is collimated to be incident in star sensor, which demarcates part as star simulator；Another part light is collimated to be irradiated on star sensor mounting flange face, self-collimation measurement optical path of some light as star sensor and star simulator, to realize the function of star simulator calibration and the function of star simulator and star sensor self-collimation measurement under conditions of total optical path.
Description
Technical field
The utility model belongs to the fields of measurement of space equipment Installation posture, and in particular to the calibration of star simulator and star
The optical axis self-collimation measurement system of sensor and star simulator.
Background technique
Star sensor obtains in current aerospace craft as a kind of high-precision, high reliability attitude sensitive measurement device
Extensive use is arrived.The star sensor rule substantially motionless relative to inertial space using star place, by an area Ge Tian
Fixed star photoelectronic imaging obtain star chart, then processing is carried out to star chart and identification obtains measurement sensor optical axis and refers in inertial space
To three axis of spacecraft can be obtained in the conversion of spacecraft mounting coordinate system and spacecraft attitude coordinate system by star sensor
Posture；Compared with other attitude sensors, star sensor can export very high degree of precision using fixed star as attitude measurement reference data
Absolute pose information and be widely used in spacecraft.Star simulator is set as a kind of ground calibration for star sensor
It is standby, mainly simulate position, brightness and the spectral characteristic etc. of sky culminant star.
Currently, star sensor self-collimation measurement is mainly had theodolite cloth station mensuration and is equipped with using multiple autocollimators
The test method of dual spindle accurate rotating platform.Theodolite cloth station mensuration needs mutually to aim between theodolite, since theodolite is logical
Human eye observation is crossed, being easy the environmental factors such as distance, the illumination by theodolite cloth station is influenced, and measurement accuracy can only achieve more than ten
Rad, measurement efficiency are low.
The test method that multiple autocollimators are equipped with dual spindle accurate rotating platform needs operator to be placed in multiple autocollimators
Different positions, through reference block after multiple transformation of criterion, observation autocollimator reads result and calculates installation error.The party
Method is reduced by instrument and equipment, standard component, datum tool error and manually-operated restriction, installation error measuring accuracy, and
Installation effectiveness is relatively low.
Precision small angle measurement is the important component of geometric sense gauge check, manufactures in precision assembly and calibrates, navigates
Empty space equipment is aimed to be widely used with fields such as positioning, with the further development in these fields, to its measurement accuracy and
The requirement of stability is higher and higher, therefore in high precision with the development of high stability and precision small angle measurement technology for modern industry
It is of great significance with scientific research.
Utility model content
The error of calibration and self-collimation measurement for the star simulator of the prior art is big, is limited etc. and is asked by human factor
Topic, the utility model provide a kind of under the premise of meeting star simulator calibration, and it is high, easy to operate and repeatedly to be integrated with precision
The small angle measurement system of function admirable makes star simulator and star sensor height accurately be mounted on setting position, realizes that star is quick
The collimation of both sensor and star simulator optical axis.
The technical solution of the utility model patent has according to the emergent pupil of star simulator and the optical lens system of star simulator
There is certain spacing, star simulator is designed based on this characteristic, the optical texture of star simulator is made to meet star simulator calibration
Under conditions of function, the camera lens of star simulator is bigger than the entrance pupil of star sensor, i.e., when light is full of entire optical lens system,
Some light is collimated to be incident in star sensor, which demarcates part as star simulator；Another part light
Line is collimated to be irradiated on star sensor mounting flange face, which surveys as the auto-collimation of star sensor and star simulator
Optical path is measured, to realize the function and star simulator and star sensor autocollimatic that star simulator is demarcated under conditions of common optical pathways
The function of directly measuring.
Realize that the utility model aim specific technical solution is as follows:
A kind of star simulator calibration and self-collimation measurement system based on total optical path, it is quick that the one end of star simulator is equipped with star
Sensor mounting flange face, another side are successively arranged the optical system and spectroscope of system mirror window, star simulator；The star is sensitive
Rectangular prism is installed on device mounting flange face, it is described to project corresponding position equipped with CCD system with spectroscopical light, guarantee light splitting
The light that mirror goes out is able to enter in CCD system, and CCD system mounting location is unlimited, as long as corresponding with inclined spectroscope position
?；The spectroscope and star simulator axis have slanted angle, can be incident in CCD system through spectroscopical light.
Further, rectangular prism is mounted on any position that star sensor mounting flange face is irradiated to.
Further, difference can be obtained in the installation site of mobile rectangular prism, measured zone different location deflection angle theta
The offset OO ' of position.
Further, the light of light source outgoing is full of the optical system of entire star simulator, in star sensor entrance pupil range
Interior light is collimatedly incident on star sensor, which demarcates optical path as star simulator；Star sensor entrance pupil range
Outer light is radiated on star sensor mounting flange face, autocollimatic straight light path of the part optical path as star sensor.
Further, the light being incident on star sensor mounting flange face goes back through rectangular prismatic reflection, secondary reflection
After back, again by the optical system of star simulator, after which is incident on spectroscope, final image formation by rays in place in
In CCD system below spectroscope, position offset OO ' is obtained.
Further, according to formula OO '=ftan (2 θ), wherein f is system focal length, and θ is star sensor mounting flange
Deflecting facet angle, if θ is smaller, θ ≈ OO '/2f obtains installing the deflection angle information at rectangular prism location to get quick to star
The location information of sensor.
A kind of measurement method of star simulator calibration and self-collimation measurement system based on total optical path, includes the following steps:
The light of light source outgoing is full of the optical system of entire star simulator, the light warp within the scope of star sensor entrance pupil
It crosses optical system and is collimatedly incident on star sensor, which demarcates optical path as star simulator；Star sensor entrance pupil model
It encloses outer light to be radiated on star sensor mounting flange face, autocollimatic straight light path of the part optical path as star sensor；
By installing rectangular prism on star sensor mounting flange face, will be incident on star sensor mounting flange face
Light is reflected back through rectangular prism 7；
For the light that rectangular prismatic reflection is returned again by the optical system of star simulator, which is incident on light splitting
After mirror, final image formation by rays in the CCD system below spectroscope, obtains position offset OO ' in place；
According to formula OO '=ftan (2 θ), wherein f is system focal length, and θ is star sensor mounting flange deflecting facet angle,
If θ is smaller,It obtains installing the deflection angle information at rectangular prism location, obtains star sensor mounting flange face
Location information to get arrive star sensor location information.
Further, rectangular prism is installed in any position that star sensor mounting flange face is irradiated to, it is quick in star
Light outside sensor entrance pupil range, which is irradiated in the regional scope in star sensor mounting flange face, in repetition
Step is stated, the information for being mounted on block prism at different location is finally obtained, realizes the survey of the region different location deflection angle theta
Amount, can be obtained the offset OO ' of different location.
The utility model patent compared with prior art, remarkable advantage are as follows: in conjunction with star simulator optical texture feature, fill
Divide the optical texture space that star simulator is utilized to reduce the cost of system so that the complexity of system is simplified, operates
Simply and readily realize.
Detailed description of the invention
Fig. 1 is the light path part of the star simulator calibration in the utility model embodiment.
Fig. 2 be the utility model embodiment in star simulator in self-collimation measurement light path part.
Fig. 3 is the entity mould of the star simulator calibration and self-collimation measurement based on total optical path in the utility model embodiment
Type figure.
Fig. 4 is the measurement simplified structure diagram of the star sensor mounting flange deflecting facet angle θ in the utility model embodiment.
Appended drawing reference is as follows: the optics of 1- star sensor mounting flange face 2- star sensor 3- system window mirror 4- star simulator
System 5- spectroscope 6- star simulator demarcates the rectangular prism 8- autocollimatic straight light path 9-CCD system of optical path 7-
Specific embodiment
1-4 is described in further detail one specific embodiment of the utility model with reference to the accompanying drawing.
As shown in figure 3, a kind of star simulator calibration and self-collimation measurement system based on total optical path, the one of star simulator 2
End side be equipped with star sensor mounting flange face 1, another side be successively arranged system mirror window 3, star simulator optical system 4 and point
Light microscopic 5；Rectangular prism 7 is installed, the lower section of spectroscope 5 is equipped with CCD system 9 on star sensor mounting flange face 1；Spectroscope 5 with
The axis of star simulator 2 has slanted angle, and the light through spectroscope 5 can be incident in CCD system 9, and in CCD system 9
Middle imaging.
As shown in Figure 1, the light path part of star simulator calibration, the light of light source outgoing is full of the optics of entire star simulator
System 4, the light within the scope of star sensor entrance pupil are collimatedly incident on star sensor part by the optical system 4 of star simulator
2, which demarcates optical path 6 as star simulator；
As shown in Fig. 2, the light outside star sensor entrance pupil range is radiated on star sensor mounting flange face 1, the part
Autocollimatic straight light path 8 of the optical path as star sensor.
As shown in figure 3, will be incident on star sensor by installing rectangular prism 7 on star sensor mounting flange face 1 and consolidate
The light determined on flange face 1 is reflected back through rectangular prism 7.The reflected light of rectangular prism 7 is again by star simulator
Optical system 4, after which is incident on spectroscope 5, final image formation by rays is in place in the CCD system 9 of the lower section of spectroscope 5
In, obtain position offset OO '.According to formula OO '=ftan (2 θ), wherein f is system focal length, and θ fixes for star sensor
Flange face deflection angle, if θ is smaller,Thus obtain installing the deflection angle information at rectangular 7 position of prism to get
To the location information of star sensor 2.
As shown in figure 4, the light outside star sensor entrance pupil range, some light are irradiated to star sensor fixation
It, can be in any position that star sensor mounting flange face 1 is irradiated to by installing rectangular rib in the regional scope in blue face 1
Then mirror 7 passes through above-mentioned same process, finally obtains the information for being mounted on block prism 7 at different location, realize the region
The offset OO ' of different location can be obtained in the measurement of different location deflection angle theta.
A kind of measurement method of the star simulator calibration and self-collimation measurement system based on total optical path of the present embodiment, including
Following steps:
As shown in figure 3, the light of light source outgoing is full of the optical system 4 of entire star simulator, in 2 entrance pupil model of star sensor
Light in enclosing collimatedly is incident on star sensor 2 by optical system, which demarcates optical path 6 as star simulator；
Light outside star sensor entrance pupil range is radiated on star sensor mounting flange face 1, and the part optical path is as star sensor
Autocollimatic straight light path 8；
By installing rectangular prism on star sensor mounting flange face, will be incident on star sensor mounting flange face
Light is reflected back through rectangular prism 7；
Again by the optical system 4 of star simulator, which is incident on point the reflected light of rectangular prism 7
After light microscopic, final image formation by rays in the CCD system 9 of 5 lower section of spectroscope, obtains position offset OO ' in place；
According to formula OO '=ftan (2 θ), wherein f is system focal length, and θ is star sensor mounting flange deflecting facet angle,
If θ is smaller,It obtains that the deflection angle information at rectangular 7 position of prism is installed, obtains star sensor mounting flange face
1 location information is to get the location information for arriving star sensor 2.
As shown in figure 4, rectangular prism is installed in any position that star sensor mounting flange face is irradiated to, it is quick in star
Light outside sensor entrance pupil range, which is irradiated in the regional scope in star sensor mounting flange face, in repetition
Step is stated, the information for being mounted on block prism at different location is finally obtained, realizes the survey of the region different location deflection angle theta
Amount, can be obtained the offset OO ' of different location.
Claims (6)
1. a kind of star simulator calibration and self-collimation measurement system based on total optical path, which is characterized in that the star simulator
One end be equipped with star sensor mounting flange face, another side be successively arranged system mirror window, star simulator optical system and point
Light microscopic；Rectangular prism is installed on star sensor mounting flange face, it is described to be equipped with spectroscopical light injection corresponding position
CCD system；The axis of the spectroscope and star simulator has slanted angle.
2. a kind of star simulator calibration and self-collimation measurement system, feature based on total optical path according to claim 1
It is, the rectangular prism is mounted on any position that star sensor mounting flange face is irradiated to.
3. a kind of star simulator calibration and self-collimation measurement system, feature based on total optical path according to claim 2
It is, the offset of different location can be obtained in the installation site of mobile rectangular prism, measured zone different location deflection angle theta
OO′。
4. a kind of star simulator calibration and self-collimation measurement system, feature based on total optical path according to claim 1
It is, the light of light source outgoing is full of the optical system of entire star simulator, the light collimation within the scope of star sensor entrance pupil
Ground is incident on star sensor, which demarcates optical path as star simulator；Light irradiation outside star sensor entrance pupil range
On star sensor mounting flange face, autocollimatic straight light path of the part optical path as star sensor.
5. a kind of star simulator calibration and self-collimation measurement system, feature based on total optical path according to claim 4
It is, the light being incident on star sensor mounting flange face goes back through rectangular prismatic reflection, after secondary reflection is returned, leads to again
The optical system of star simulator is crossed, after which is incident on spectroscope, final image formation by rays is in place below spectroscope
In CCD system, position offset OO ' is obtained.
6. a kind of star simulator calibration and self-collimation measurement system, feature based on total optical path according to claim 5
It is, according to formula OO '=ftan (2 θ), wherein f is system focal length, and θ is star sensor mounting flange deflecting facet angle, if θ
When smaller, θ ≈ OO '/2f obtains installing the deflection angle information at rectangular prism location and believes to get to the position of star sensor
Breath.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920118412.3U CN209214634U (en) | 2019-01-24 | 2019-01-24 | A kind of star simulator calibration and self-collimation measurement system based on total optical path |
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| CN201920118412.3U CN209214634U (en) | 2019-01-24 | 2019-01-24 | A kind of star simulator calibration and self-collimation measurement system based on total optical path |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114543835A (en) * | 2021-12-27 | 2022-05-27 | 中科院南京天文仪器有限公司 | Satellite simulation system vibration suppression system and method adopting laser interference detection |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114543835A (en) * | 2021-12-27 | 2022-05-27 | 中科院南京天文仪器有限公司 | Satellite simulation system vibration suppression system and method adopting laser interference detection |
| CN114543835B (en) * | 2021-12-27 | 2023-04-28 | 中科院南京天文仪器有限公司 | Star simulation system vibration suppression system and method adopting laser interference detection |
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Effective date of registration: 20210111 Address after: No.23, Huashan Road, Gaochun County Development Zone, Gaochun District, Nanjing City, Jiangsu Province, 210008 Patentee after: CAS NANJING NAIRC PHOTOELECTRIC INSTRUMENT Co.,Ltd. Address before: 210042 no.6-10 Huayuan Road, Xuanwu District, Nanjing City, Jiangsu Province Patentee before: CAS NANJING ASTRONOMICAL INSTRUMENTS Co.,Ltd. |