CN102538823A - System for detecting matching error of TDICCD (Time Delay and Integration Charge Coupled Device) focal plane different-speed imaging - Google Patents
System for detecting matching error of TDICCD (Time Delay and Integration Charge Coupled Device) focal plane different-speed imaging Download PDFInfo
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Abstract
The invention relates to a system for detecting matching error of TDICCD (Time Delay and Integration Charge Coupled Device) focal plane different-speed imaging. A dynamic target simulation device of the system is arranged in front of a parallel collimator; a zoom focusing and imaging system is arranged between the parallel collimator and a TDICCD focal plane and is composed of a group of zooming and imaging units; a control system adjusts focal distance and axial position of each zooming and imaging unit of the zoom focusing and imaging system, thus each imaging unit on the TDICCD focal plane produces target images at different speeds, moving speeds of the target images on each imaging unit on the TDICCD focal plane are calculated according to the focal distance of each zooming and imaging unit, a target rotating speed and the focal distance of the parallel collimator; and an image quick-look system analyzes dynamic target images, and a dynamic transfer function and a dynamic resolution of each imaging unit of the TDICCD focal plane are obtained by calculation. The system provided by the invention can be applied to detection on large-scale TDICCD focal plane imaging quality, image motion compensation accuracy and array different-speed image motion compensation matching accuracy.
Description
Technical field
The invention belongs to TDICCD imaging detection range, relate to a kind of large scale TDICCD focal plane friction speed imaging matching error detection system.
Background technology
Along with the development of remote sensing technology, increasingly high to the resolution requirement of satellite optical imagery, cover width requires increasing.In order to satisfy the demands, on the one hand,, can effectively improve the ground resolution of optical sensor through increasing the focal length and the effective aperture of camera optics system; Through increasing the apparent field angle of optical system, can effectively improve the ground cover width of optical sensor on the other hand through the optical system that adopts long-focus, big visual field.At present, adopt the TDICCD camera of the large scale focal plane of push-scanning image for the optical sensor of high resolving power, wide cover width more.
The TDICCD camera of large scale focal plane is in the push-scanning image process; The pointing accuracy of satellite platform flight attitude; Degree of stability changes, drift angle changes, track speed height ratio changes, dither factors such as (or shakes); And the performance difference of each image-generating unit of large scale TDICCD focal plane all can cause camera in the integration imaging process, to produce image drift, makes image quality decrease even deterioration.For this reason, the image-forming condition of simulation satellite borne sensor carries out dynamic imaging to target, and the laboratory dynamic imaging characteristic of analyzing large scale TDICCD focal plane is particularly important.
Summary of the invention
The technical matters that the present invention will solve provides a kind of large scale TDICCD focal plane friction speed imaging matching error detection system.
In order to solve the problems of the technologies described above, large scale TDICCD focal plane friction speed imaging matching error detection system of the present invention comprises the dynamic object analogue means, parallel light tube, zoom and focusing imaging system, control system, image quick look system; Said dynamic object analogue means is positioned at the place ahead of parallel light tube; The zoom and focusing imaging system is made up of one group of varifocal imaging unit between parallel light tube and TDICCD focal plane, and each varifocal imaging unit respectively with the TDICCD focal plane on each image-generating unit position corresponding; The dynamic object figure of dynamic object analogue means becomes dynamic object source, infinite distance behind the parallel light tube collimation, this dynamic object source images in respectively on the corresponding image-generating unit of TDICCD focal plane through each varifocal imaging unit of zoom and focusing imaging system; Control system is through the focal length value and the axial location of each varifocal imaging unit of adjustment zoom and focusing imaging system; Make the target picture that produces friction speed on each image-generating unit on the TDICCD focal plane; Receive the rotating speed of target of the real focal length value and the dynamic object analogue means feedback of each varifocal imaging unit feedback simultaneously, calculate the moving speed of the target image drift on each image-generating unit on the TDICCD focal plane according to the focal length value of each varifocal imaging unit, the focal length value that rotating speed of target reaches the parallel light tube of storing in advance; The image quick look system receives the dynamic object image of TDICCD focal plane output and it is analyzed, calculates, and obtains the dynamic transfer function and the dynamic resolution of each image-generating unit of TDICCD focal plane.
The present invention is imaged on dynamic object source, infinite distance on each image-generating unit of TDICCD focal plane through the zoom and focusing imaging system; Make the target picture that produces friction speed on each image-generating unit; To the readability of the dynamic object imaging image that obtains, TDICCD focal plane dynamic transfer function and the dynamic resolution that image quick look system 6 calculates, can confirm whether the TDICCD focal plane exists friction speed imaging matching error according to each image-generating unit on the TDICCD focal plane.
The dynamic transfer function and the dynamic resolution of each image-generating unit of TDICCD focal plane that the moving speed of the target image drift that provides according to control system among the present invention, image quick look system provide; Can compensate the TDICCD camera; And can utilize the dynamic IMC effect after the present invention estimates compensation; Image quality under the drift angle state of a control is confirmed focal plane (infinite distance scenery) position of TDICCD camera.The present invention can be used for large scale TDICCD focal plane device image quality, the accuracy of image motion compensation under the drift angle state of a control, the detection of array friction speed IMC matching precision.
The present invention utilizes hyperchannel varifocal imaging system dexterously; Accurately adjust the focal length value of image-generating unit through control system; Make different image-generating units produce focal length difference; Cooperate dynamic object analogue means and parallel light tube to produce the different moving target of hyperchannel translational speed, the friction speed target is provided for large scale TDICCD focal plane friction speed image drift matching error detects.
The present invention utilizes the image quick look system to receive the output data of large scale TDICCD focal plane to the moving target imaging of different translational speeds in real time; Obtain large scale TDICCD focal plane respectively the form images dynamic transfer function and the dynamic resolution of passage through analyzing, calculating, whether satisfy imaging requirements to confirm respectively the form images friction speed image drift matching error of passage of large scale TDICCD focal plane.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.
Fig. 1 is a large scale TDICCD focal plane friction speed imaging matching error detection system structural representation of the present invention.
Fig. 2 is a dynamic object analogue means structural representation.
Fig. 3 is the parallel light tube structural representation.
Embodiment
As shown in Figure 1, large scale TDICCD focal plane friction speed imaging matching error detection system of the present invention comprises dynamic object analogue means 1, parallel light tube 2, zoom and focusing imaging system 3, control system 5, image quick look system 6.
As shown in Figure 2, said dynamic object analogue means 1 is made up of pointolite 1-7, heat shield 1-13, catoptron 1-12, condenser 1-8, optical filter 1-9, the second catoptron 1-10, the 3rd catoptron 1-11, dynamic object rotary drum 1-1, the first catoptron 1-3, bias current mirror 1-2, precise rotating platform 1-4, drift angle rotary work-table 1-5 and worktable 1-6; Drift angle rotary work-table 1-5 places on the worktable 1-6, and the circular hole on its rotation axis and the worktable 1-6 movingly; Precise rotating platform 1-4 is fixed on the drift angle rotary work-table 1-5, the axis of its axis runout drift angle rotary work-table 1-5; Dynamic object rotary drum 1-1 is fixed on the precise rotating platform 1-4, and is fixed with a plurality of Target Boards on the dynamic object rotary drum 1-1 periphery; Bias current mirror 1-2 is positioned on the axis of drift angle rotary work-table 1-5, and its stationkeeping is motionless, and the first catoptron 1-3 is fixed on the central shaft of drift angle rotary work-table 1-5; The light that pointolite 1-7 sends converts converging light into through heat shield 1-13, condenser 1-8; After optical filter 1-9 homogenising, incide the second catoptron 1-10 again; After the second catoptron 1-10 and the 3rd catoptron 1-11 reflection, be radiated on the Target Board, Target Board images on the bias current mirror 1-2 after first catoptron 1-3 reflection.
Dynamic object rotary drum 1-1 produces the uniform motion target through rotary axis, simulation ground image drift.1-2 is fixed when the bias current mirror, and parts such as dynamic object rotary drum 1-1 can produce the bias current target along with drift angle rotary work-table 1-5 rotation, for the dynamic transfer function of TDICCD camera machine system detects dynamic object is provided.The dynamic object figure is processed the channel(l)ed plate pattern of the equally spaced rectangular distribution of black and white, and stripe direction is vertical with the target travel direction.When dynamic object moved with certain rule perpendicular to optical axis, the dynamic object figure was behind the parallel light tube collimation, and tested relatively TDICCD camera can be simulated the dynamic object of infinite distance.
Said parallel light tube 2 can adopt the common nothing of prior art to block parallel light tube, also can adopt structure as shown in Figure 3.
As shown in Figure 3; Parallel light tube 2 is made up of primary mirror 2-3 and secondary mirror 2-2; The bias current mirror 1-2 of dynamic object analogue means 1 places on the focal plane 2-1 position of parallel light tube 2, and the light beam that dynamic object sends is through secondary mirror 2-2 reflection, again through primary mirror 2-3 reflection becoming parallel beam.
Said primary mirror 2-3, secondary mirror 2-2 adopt microcrystal glass material.
Said zoom and focusing imaging system 3 is made up of one group of varifocal imaging unit, and its effect is that the parallel beam that parallel light tube 2 provides is imaged on the TDICCD focal plane 4, the corresponding TDICCD image-generating unit in each varifocal imaging unit.Friction speed duty according to TDICCD focal plane 4; Change the focal length value and the axial location of each varifocal imaging unit through control system 5; Make different passages produce different change multiple proportions; Make the target picture that produces friction speed on each image-generating unit of TDICCD focal plane 4; Receive the rotating speed of target of the real focal length value and the dynamic object analogue means feedback of each varifocal imaging unit feedback simultaneously, calculate the moving speed of the target image drift on each image-generating unit on the TDICCD focal plane according to the focal length value of each varifocal imaging unit, the focal length value that rotating speed of target reaches the parallel light tube of storing in advance 2.
Single varifocal imaging unit in the said zoom and focusing imaging system 3 adopts the high-quality zoom lens to be the imaging main body; The zoom process is with the high-precision encoder location of focusing, and guaranteeing provides speed image drift target accurately for large scale focal plane TDICCD friction speed imaging matching detection.
The different target picture of different image-generating unit inbound pacings on the large scale TDICCD focal plane; Image quick look system 6 is according to its output image data; After analyzing, calculating TDICCD focal plane 4 each image-generating unit dynamic transfer function and dynamic resolution, can confirm whether the TDICCD focal plane exists friction speed imaging matching error.
The invention is not restricted to above-mentioned embodiment; The dynamic object analogue means also can adopt other versions of the prior art; Parallel light tube also can adopt other versions; Therefore every any simple deformation of on claim 1 technical scheme of the present invention basis, making all the invention is intended within the protection domain.
Claims (4)
1. a large scale TDICCD focal plane friction speed imaging matching error detection system is characterized in that comprising dynamic object analogue means (1), parallel light tube (2), zoom and focusing imaging system (3), control system (5), image quick look system (6); Said dynamic object analogue means (1) is positioned at the place ahead of parallel light tube (2); Zoom and focusing imaging system (3) is positioned between parallel light tube (2) and the TDICCD focal plane (4), constitute by one group of varifocal imaging unit, and each varifocal imaging unit respectively with TDICCD focal plane (4) on each image-generating unit position corresponding; The dynamic object figure of dynamic object analogue means (1) becomes dynamic object source, infinite distance behind parallel light tube (2) collimation, this dynamic object source images in respectively on the corresponding image-generating unit of TDICCD focal plane (4) through each varifocal imaging unit of zoom and focusing imaging system (3); Control system (5) is through the focal length value and the axial location of each varifocal imaging unit of adjustment zoom and focusing imaging system (3); Make the target picture that produces friction speed on each image-generating unit on the TDICCD focal plane (4); Receive the rotating speed of target of the real focal length value and dynamic object analogue means (1) feedback of each varifocal imaging unit feedback simultaneously, go up the moving speed of target image drift on each image-generating unit according to the focal length value of each varifocal imaging unit, the focal length value calculating TDICCD focal plane (4) that rotating speed of target reaches the parallel light tube of storing in advance (2); Image quick look system (6) receives the dynamic object image of TDICCD focal plane (4) output and it is analyzed, calculates, and obtains the dynamic transfer function and the dynamic resolution of each image-generating unit of TDICCD focal plane (4).
2. large scale TDICCD focal plane friction speed according to claim 1 imaging matching error detection system is characterized in that said dynamic object analogue means (1) is made up of pointolite (1-7), heat shield (1-13), catoptron (1-12), condenser (1-8), optical filter (1-9), second catoptron (1-10), the 3rd catoptron (1-11), dynamic object rotary drum (1-1), first catoptron (1-3), bias current mirror (1-2), precise rotating platform (1-4), drift angle rotary work-table (1-5) and worktable (1-6); Drift angle rotary work-table (1-5) places on the worktable (1-6), and the circular hole on its rotation axis and the worktable (1-6) movingly; Precise rotating platform (1-4) is fixed on the drift angle rotary work-table (1-5), the axis of its axis runout drift angle rotary work-table (1-5); Dynamic object rotary drum (1-1) is fixed on the precise rotating platform (1-4), and is fixed with a plurality of Target Boards on dynamic object rotary drum (1-1) periphery; Bias current mirror (1-2) is positioned on the axis of drift angle rotary work-table (1-5), and its stationkeeping is motionless, and first catoptron (1-3) is fixed on the central shaft of drift angle rotary work-table (1-5); The light that pointolite (1-7) sends converts converging light into through heat shield (1-13), condenser (1-8); After optical filter (1-9) homogenising, incide second catoptron (1-10) again; After second catoptron (1-10) and the 3rd catoptron (1-11) reflection, be radiated on the Target Board, Target Board images on the bias current mirror (1-2) after first catoptron (1-3) reflection.
3. large scale TDICCD focal plane friction speed imaging matching error detection system according to claim 2; It is characterized in that said parallel light tube (2) is made up of primary mirror (2-3) and secondary mirror (2-2); The bias current mirror (1-2) of dynamic object analogue means (1) places on focal plane (2-1) position of parallel light tube (2), and the light beam that dynamic object sends is through secondary mirror (2-2) reflection, again through primary mirror (2-3) reflection becoming parallel beam.
4. large scale TDICCD focal plane friction speed imaging matching error detection system according to claim 3 is characterized in that said primary mirror (2-3), secondary mirror (2-2) adopt microcrystal glass material.
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| CN103913295A (en) * | 2014-04-21 | 2014-07-09 | 中国科学院空间科学与应用研究中心 | Surface light source for TDI imaging load detection and detection method |
| CN108020871A (en) * | 2017-12-11 | 2018-05-11 | 中国科学院长春光学精密机械与物理研究所 | aerial camera infrared imaging device dynamic imaging quality test device and test method |
| CN108181005A (en) * | 2017-11-17 | 2018-06-19 | 天津津航技术物理研究所 | A kind of method and system for the debugging of TDI ccd detectors focal plane |
| CN110149488A (en) * | 2019-04-26 | 2019-08-20 | 中国科学院长春光学精密机械与物理研究所 | Aviation friction speed image shift compensation circuit, CCD driving circuit and driving method |
| CN110493516A (en) * | 2019-08-08 | 2019-11-22 | 中国科学院长春光学精密机械与物理研究所 | A kind of friction speed image motion compensation device and system |
| CN110542434A (en) * | 2019-08-23 | 2019-12-06 | 中国科学院西安光学精密机械研究所 | Target for ground debugging of satellite-borne integrated rapid observation system and ground debugging method |
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| CN112666674A (en) * | 2020-12-28 | 2021-04-16 | 中国科学院长春光学精密机械与物理研究所 | Optical image motion compensation method and device |
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| CN103033344B (en) * | 2012-12-14 | 2015-02-18 | 中国科学院长春光学精密机械与物理研究所 | Optical system focal distance detection method |
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| CN103913295A (en) * | 2014-04-21 | 2014-07-09 | 中国科学院空间科学与应用研究中心 | Surface light source for TDI imaging load detection and detection method |
| CN103913295B (en) * | 2014-04-21 | 2016-03-30 | 中国科学院空间科学与应用研究中心 | A kind of area source for the detection of time delay integration imaging load and detection method |
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| CN108020871A (en) * | 2017-12-11 | 2018-05-11 | 中国科学院长春光学精密机械与物理研究所 | aerial camera infrared imaging device dynamic imaging quality test device and test method |
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| CN110493516B (en) * | 2019-08-08 | 2021-05-18 | 中国科学院长春光学精密机械与物理研究所 | Different-speed image motion compensation device and system |
| CN110493516A (en) * | 2019-08-08 | 2019-11-22 | 中国科学院长春光学精密机械与物理研究所 | A kind of friction speed image motion compensation device and system |
| CN110542434A (en) * | 2019-08-23 | 2019-12-06 | 中国科学院西安光学精密机械研究所 | Target for ground debugging of satellite-borne integrated rapid observation system and ground debugging method |
| CN110542434B (en) * | 2019-08-23 | 2021-04-20 | 中国科学院西安光学精密机械研究所 | Target for ground debugging of satellite-borne integrated rapid observation system and ground debugging method |
| CN113848638A (en) * | 2020-06-28 | 2021-12-28 | 中国科学院长春光学精密机械与物理研究所 | Micro LED optical system with dynamic compensation function |
| CN113848638B (en) * | 2020-06-28 | 2024-03-12 | 中国科学院长春光学精密机械与物理研究所 | Micro LED optical system with dynamic compensation function |
| CN112666674A (en) * | 2020-12-28 | 2021-04-16 | 中国科学院长春光学精密机械与物理研究所 | Optical image motion compensation method and device |
| CN117939117A (en) * | 2024-03-25 | 2024-04-26 | 长春长光睿视光电技术有限责任公司 | Dynamic resolution detection method of aviation camera with forward image motion compensation function |
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