CN207528345U - A kind of geometrical registration test device - Google Patents
A kind of geometrical registration test device Download PDFInfo
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- CN207528345U CN207528345U CN201721376126.4U CN201721376126U CN207528345U CN 207528345 U CN207528345 U CN 207528345U CN 201721376126 U CN201721376126 U CN 201721376126U CN 207528345 U CN207528345 U CN 207528345U
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Abstract
This patent discloses a kind of geometrical registration test device, the test especially suitable for joining image-forming spectrometer outside the more units of pull-broom type.The device is made of parallel light tube, moving target mark, supporting table and one-dimensional turnover component.The movement of moving target mark at rotation and focal surface of collimator tube of the test device by controlling one-dimensional turntable carries out the geometrical registration test of the outer joining image-forming spectrometer of the more units of pull-broom type, after data processing, obtains the geometrical registration relationship of more units.This patent is with the moving target mark at one-dimensional turntable and focal surface of collimator tube instead of the dimensional turntable in current methods, the problem of high to index requests such as the precision of dimensional turntable and load-bearing in common method is overcome, a kind of simple, high-precision, efficient geometrical registration test method are provided for the more unit imaging spectrometers of pull-broom type.This patent is suitable for the geometrical registration test of the airborne or spaceborne more unit imaging spectrometers of earth observation, is also applied for the geometrical registration test of more unit imagers.
Description
Technical field
This patent is related to the test of imaging spectrometer, particularly relates to a kind of geometrical registration test of more unit imaging spectrometers
Device.
Background technology
It is wide cut, wide visual field and wide spectrum to improve one of operating efficiency, the development trend of imaging spectrometer.It is limited to visit
Survey device scale, while for the optical property for improving system, such as transmitance, image quality and spectral characteristic etc., also for reduce into
This, one of method for obtaining wide cut, wide visual field and wide spectrum performance is more unit field stitchings.For as possible in more unit adjustments
The registration accuracy of system is ensured in journey, a kind of registration apparatus and method are proposed in patent CN104034417A.It is finally mostly single
Geometrical registration relationship between machine also needs to accurately test, and test result will be supplied to data processing personnel, for flying quality figure
As processing is with reference to use.
Main problem of the existing technology is：
(1) during the more units of system integrate adjustment, it is ensured that the geometrical registration sub-pixed mapping grade or higher precision of system, no
Fine laboratory geometrical registration test is carried out again, and is directly carried out at image registration by algorithm using outfield flying quality
Reason.
(2) geometrical registration test is generally carried out using dimensional turntable and parallel light tube, needs entire instrument being placed on two
It ties up on turntable.Since more unit splicing systems include splicing of multiple visual fields even more than spectral coverage unit, level of integrated system it is high and
Complexity, the big quality weight of machine volume after integrating.And the general light inlet of air remote sensing instrument is downward, for ensure instrument by
It is basically identical when power state is with flight, then instrument entrance light is also required to place downward when geometrical registration is tested, it will by turning mirror
Incident light turnover is horizontal.In this way, turning mirror, support platform and instrument are then used as an entirety, in dimensional turntable, then
Turntable is required higher, it is desirable that the load-bearing of turntable is big, loading end is big and precision will height.
Invention content
The purpose of this patent is to make up the deficiencies in the prior art, provides a kind of high-precision, the test of efficient geometrical registration
Device.
In order to achieve the above object, the technical solution of this patent is as follows：
This patent geometrical registration test device is made of parallel light tube, moving target mark, supporting table and one-dimensional turnover component.
Moving target mark 2 is made of target hole 2.1 and translation stage 2.2, and target hole 2.1 is in the focus of parallel light tube 1, target
The aperture in hole 2.1 corresponds to the temporal resolution of instrument to be measured, and driving translation stage 2.2 realizes 2.1 or so the translation of target hole.One-dimensional turn
Foldable assembly 4 is made of plane mirror 4.1 and one-dimensional turntable 4.2, and 4.1 bore of plane mirror can cover the thang-kng of all visual fields of all units
It is required that one-dimensional 4.2 shaft of turntable is vertical with the optical axis of parallel light tube 1, one-dimensional turntable 4.2 is driven so that from target hole 2.1
Instantaneous field of view's light is incident on different angle in instrument to be measured.
Instrument to be measured is pull-broom type imaging spectrometer, is realized by outer splicing by the unit of more same design parameters and regarded greatly
, unit quantity is n.Instrument to be measured is placed in supporting table 3, and space dimension is with one-dimensional 4.2 shaft of turntable and from parallel
The beam optical axis of light pipe 1 is vertical.
When geometrical registration is tested, driving one-dimensional turnover component 4, driving moving target mark 2 finds detector to some visual field
Upper response is very big, record data (Nij,θij,Xij), subscript i represents unit serial number, i=1,2...n, and subscript j represents visual field sequence
Number, j=1,2...5, Nij、θijAnd XijCorresponding space dimension columns, the one-dimensional turntable of the jth visual field of the i-th unit are represented respectively
4.2 numerical value and the numerical value of translation stage 2.2.
Data above is handled to obtain the geometrical registration relationship of more unit imaging spectrometers.Every unit selects space
Tie up 5 visual fields, visual field serial number j is 1,2,3,4,5, respectively -1 visual field of edge, terminate with left side adjoining stand-alone Chong Die visual field,
0 visual field of center, the Chong Die visual field that starts with the right adjoining stand-alone ,+1 visual field of edge.For unit 1, the left side does not have adjoining stand-alone,
Then the visual field can accident；For unit n, the right does not have adjoining stand-alone, then the visual field can accident.
The total visual field for being then tested more unit imaging spectrometers is 2 | θ11-θn5|；The focal length f of unit iiIt is 0.5 | Ni5-Ni1
|·pi/tan|θi5-θi1|, wherein piThe corresponding detector pixel dimension of 1 instantaneous field of view for i-th unit；The wink of unit i
When visual field IFOViFor pi/fi；Wearing the i.e. overlapped fov of rail geometrical registration relationship is | Ni4-Ni5|, can also be expressed as | Ni+1,1-Ni+1,2
|；It, can be by the most edge of unit 1 along the depth of parallelism of equivalent slits between rail geometrical registration relationship, that is, pull-broom type imaging spectrometer unit
The numerical value X of the corresponding translation stage 2.2 of visual field11As benchmark, if the focal length of parallel light tube 1 is f, then the equivalent slits of unit i are inclined
Tiltedly it is expressed as with pixel number | Xi5-Xi1|/(f·IFOVi), and relative to unit 1, in peripheral field Ni5That is Ni+1,2Place, it is equivalent narrow
Seam and reference view field X11Deviation can approximation be expressed as | X11-Xi5|/(f·IFOVi), can also approximation be expressed as | X11-XI+1,2
|/(f·IFOVi+1)。
Due to the use of above-mentioned technical proposal, the advantages of geometrical registration test device and method of this patent, is：To integrated
High complicated multi-and single-machine system is spent, the 2-d rotating platform for usually carrying instrument to be measured turnover mirror assembly 3 is parallel with being placed on
Moving target mark 2 at 1 focal plane of light pipe substitutes, and does not use dimensional turntable, and device is more easy to realize, and easily controllable；It can extend
The unit number of outer splicing and spectral coverage number can also be applied to outside the unit of different designs parameter and splice, can also be applied to detection
In device in splicing system；The geometrical registration of more unit imaging spectrometers can be not only surveyed, other Image-forming instruments can also be applied to
Geometrical registration test in；Field of view number is expansible, is tested into line distortion.
Description of the drawings
Fig. 1 is the geometrical registration test device schematic diagram of this patent.
In figure：1 is parallel light tube；
2 be moving target mark；
2.1 be target hole；
2.2 be translation stage；
3 be supporting table；
4 be one-dimensional turnover component；
4.1 be plane mirror；
4.2 be one-dimensional turntable.
Fig. 2 is more unit imaging spectrometer geometrical registration test results.
Specific embodiment
Below according to Fig. 1, to one preferable embodiment of this patent and it is elaborated：
Certain imaging spectrometer to be measured is spliced by two units, and the design parameter of two units is consistent, each unit design
Visual field is 14.58 °, and the adjoining stand-alone angle design value that crosses is about 1.78 °, instantaneous field of view design value 0.125mrad, corresponding spy
16 μm of device pixel is surveyed, the first number of unit detection is 2048 yuan.Test the geometrical registration relationship of two units.
Fig. 1 is the geometrical registration test device of this patent, by parallel light tube 1, moving target mark 2, supporting table 3 and one-dimensional turn
Foldable assembly 4 forms.The aperture in target hole 2.1 is 0.25mm, drives 2.2 or so translating stroke ± 5mm of translation stage, 1 μ of translation precision
m.4.1 bore of plane mirror be 420mm × 200mm, drive one-dimensional turntable 4.2 can 360 ° rotation, angle precision 0.5 ".
Light path is carried out by Fig. 1 to build and instrument to be measured installation.Translation stage 2.2 in zero-bit target hole 2.1 in parallel light tube 1
Focus on, zero on the basis of one-dimensional turntable 4.2 is set when turning back light beam straight up.Imaging spectrometer to be measured is placed on supporting table
On 3, space dimension is vertical with 4.2 shaft of turntable and beam optical axis.
Since unit quantity is 2, then the left side of unit 1 does not have adjoining stand-alone, and the right of unit 2 does not have adjoining stand-alone, because
This visual field selects 5, but the 2nd visual field of unit 1 and the 4th visual field vacancy accident of unit 2.5 visual field serial numbers 1 of space dimension,
2nd, 3,4,5, respectively -1 visual field of edge, terminate with adjoining stand-alone Chong Die visual field, 0 visual field of center, start weight with adjoining stand-alone
Folded visual field ,+1 visual field of edge.Drive one-dimensional turnover component 4 respectively to each visual field, driving moving target mark 2 is found to be rung on detector
Should be very big, record data are listed in Table 1 below.
1 test data record sheet of table
| Visual field serial number | Unit 1 | Visual field serial number | Unit 2 |
| 1 | (1,-7°6′50″,0) | ||
| 2 | -- | ||
| 3 | (1024,-3°26′49″,0) | ||
| 4 | (1923.7,-13′22″,0) | 1 | (1,-13′22″,-0.040) |
| 5 | (2048,13′20″,0) | 2 | (125.3,13′20″,-0.032) |
| 3 | (1024,3°26′47″,0.041) | ||
| 4 | -- | ||
| 5 | (2048,7°6′48″,0.119) |
Data processing is it is found that the total visual field of the imaging spectrometer is 28 ° 27 ' 16 ", i.e., 28.45 °.The imaging spectrometer two
The space dimension 1923.7 to 2048 that rail overlapped fov is unit 1 of wearing of unit arranges, and the space dimension 1 to 125.3 of unit 2 arranges；Along rail
Registration relationship：1 slit of unit is Chong Die with scanning field of view, and 2 slit of unit has the inclination of 0.64 pixel relative to 1 slit of unit.Knot
Fruit is as shown in Figure 2.
Claims (1)
1. a kind of geometrical registration test device, by parallel light tube (1), moving target mark (2), supporting table (3) and one-dimensional turnover component
(4) it forms, it is characterised in that：
Moving target mark (2) is made of target hole (2.1) and translation stage (2.2), and target hole (2.1) are in the focus of parallel light tube (1)
On, the aperture of target hole (2.1) corresponds to the temporal resolution of instrument to be measured, and driving translation stage (2.2) realizes that target hole (2.1) are left
Right translation；One-dimensional turnover component (4) is made of plane mirror (4.1) and one-dimensional turntable (4.2), and plane mirror (4.1) bore can cover
The thang-kng requirement of all visual fields of the outer all units of joining image-forming spectrometer of the more units of pull-broom type, one-dimensional turntable (4.2) shaft is with putting down
The optical axis of row light pipe (1) is vertical, drives one-dimensional turntable (4.2) so that instantaneous field of view's light from target hole (2.1) is with difference
Angle is incident in instrument to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721376126.4U CN207528345U (en) | 2017-10-24 | 2017-10-24 | A kind of geometrical registration test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721376126.4U CN207528345U (en) | 2017-10-24 | 2017-10-24 | A kind of geometrical registration test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207528345U true CN207528345U (en) | 2018-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721376126.4U Active CN207528345U (en) | 2017-10-24 | 2017-10-24 | A kind of geometrical registration test device |
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| CN (1) | CN207528345U (en) |
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2017
- 2017-10-24 CN CN201721376126.4U patent/CN207528345U/en active Active
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