CN107168006A - Big breadth optical imaging system based on rotation - Google Patents
Big breadth optical imaging system based on rotation Download PDFInfo
- Publication number
- CN107168006A CN107168006A CN201710445196.9A CN201710445196A CN107168006A CN 107168006 A CN107168006 A CN 107168006A CN 201710445196 A CN201710445196 A CN 201710445196A CN 107168006 A CN107168006 A CN 107168006A
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- China
- Prior art keywords
- satellite
- camera
- image camera
- breadth
- earth
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B37/00—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe
- G03B37/02—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe with scanning movement of lens or cameras
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
- G01C11/02—Picture taking arrangements specially adapted for photogrammetry or photographic surveying, e.g. controlling overlapping of pictures
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B37/00—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe
- G03B37/04—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe with cameras or projectors providing touching or overlapping fields of view
Abstract
The present invention provides optical imaging system, and the present invention, which provides optical imaging system, to be included：Satellite, image camera, axle clamp angle is more than 0 ° to the image camera optical axis over the ground with satellite, and camera rotates around satellite to the earth's axis in imaging process.
Description
Technical field
The present invention relates to optical remote sensing technical field of imaging, the big breadth optical imaging system more particularly to based on rotation.
Background technology
The development trend of Optical remote satellite is big breadth, high-resolution.Existing satellite imaging equipment passes through image camera
Swing and realize shooting breadth, so it is difficult the index taken into account, high score that the resolution ratio and breadth of existing satellite imaging equipment, which are two,
The big visual field camera of the big breadth imaging requirements heavy caliber of resolution coordinates with ultra-large detector, significantly increases load design difficult
Degree, is unfavorable for cost control and the small light of satellite.The main advantage that the present invention proposes a plan is that of avoiding is advised using super large
Mould detector, and reduce the design difficulty of big visual field camera.
The content of the invention
The problem of present invention is solved is that existing satellite imaging equipment is difficult to take into account resolution ratio and breadth two indices, to solve
Described problem, the present invention provides the big breadth optical imaging system based on rotation.
The big breadth optical imaging system based on rotation that the present invention is provided includes：Satellite, image camera, the imaging phase
Axle clamp angle is more than 0 ° to the machine optical axis over the ground with satellite, and camera rotates around satellite to the earth's axis in imaging process.
Further, in addition to rotating mechanism, described rotating mechanism one end is connected with satellite, and other end connects with image camera
Connect；In imaging process, rotating mechanism is relatively fixed with image camera, and rotating mechanism is rotated around satellite to the earth's axis.
Further, image camera is fixed on satellite, and imaging process Satellite is relatively fixed with image camera, and satellite is around satellite
The earth's axis is rotated.
Further, using single image camera, the image camera optical axis is to the angle of inclination of the earth's axis relative to satellite：Around satellite, axle rotary speed is not less than image camera over the groundUnit is
Rad/s, the frame frequency of image camera isA is that rail direction is worn on the single image camera breadth edge Polaroid to substar
Length, B be the single camera breadth Polaroid to substar along rail direction length, R is earth radius, and H is that satellite orbit is high
Degree, V is the flying speed of satellite, and L is desired imaging breadth.
Further, the image camera is area array cameras.
Further, the image camera is included relative to satellite the first image camera of axial symmetry step and the second one-tenth over the ground
As camera, first image camera and the second image camera are to the angle of the earth's axis relative to satellite：Around satellite, axle rotary speed is not less than image camera over the groundUnit is
Rad/s, the frame frequency of image camera isA is that rail direction is worn on the single image camera breadth edge Polaroid to substar
Length, B be the single camera breadth Polaroid to substar along rail direction length, R is earth radius, and H is that satellite orbit is high
Degree, V is the flying speed of satellite, and L is desired imaging breadth.
Advantages of the present invention includes：
The scheme that the present invention is provided is during satellite motion, and image camera rotates and shot to the earth's axis around satellite, is formed
Annular shoots band, adjusts the relation between the linear velocity and image camera rotary speed of satellite motion, can meet satellite motion
During the region that covers shoot entirely, so as to take into account breadth and resolution ratio, and image camera is had no special requirements.
Brief description of the drawings
Fig. 1 is that the camera for the big breadth optical imaging system based on rotation that first embodiment of the invention is provided installs deflection
Schematic diagram；
Fig. 2 is the structural representation for the big breadth optical imaging system based on rotation that second embodiment of the invention is provided.
Specific embodiment mode
Hereinafter, spirit and substance of the present invention are further elaborated in conjunction with the accompanying drawings and embodiments.
Big breadth optical imaging system provided in an embodiment of the present invention based on rotation includes：Satellite, image camera, it is described
Axle clamp angle is more than 0 ° to the image camera optical axis over the ground with satellite, and camera rotates around satellite to the earth's axis in imaging process.The imaging phase
Machine can be directly connected to satellite platform, and satellite rotates around satellite to the earth's axis simultaneously in traveling, drive camera around satellite over the ground
Axle rotates；Can also be that rotating device is installed between satellite and image camera.
Satellite in orbit when, image camera start is imaged over the ground, during 360 degree of rotating mechanism rotate, image camera
Shoot over the ground and obtain circular annular region.By the way that, to flight, the new annular imaging region of camera imaging with being imaged before before satellite
Obtained circular annular region has certain overlapping, to ensure to the seamless coverage in imaging region.Applicant is by limiting satellite
The installation parameter and rotation parameter of traveling centerline velocities and image camera, realize in satellite traveling process, image camera is to institute
State annular and shoot the region shooting limited with diameter；So as to improve shooting breadth, and to camera bore without extra demand, i.e.,
Breadth and resolution ratio are taken into account.
First embodiment
As shown in figure 1, in the present embodiment, using an image camera, image camera is directly connected in satellite platform, satellite
Platform connects windsurfing.The single camera breadth size Polaroid to substar is that A × B (wears rail direction length × along rail direction
Length), earth radius is R, and satellite orbital altitude is H, and the flying speed of satellite is V, in order to realize that the big breadth that breadth is L is seen
Survey demand, it is necessary to be to the angle of inclination of the earth's axis with satellite by the camera optical axis：
In order to ensure imaging coverage domain exhaustive, it is desirable to which image camera rotation is turned around, and the forward travel distance of satellite can not be big
In B, because carrying out being rotated into picture using only a camera, then around satellite, axle rotary speed can not be less than the image camera optical axis over the groundUnit is rad/s, if being uniformly distributed realization using N number of camera is rotated into picture, satellite platform or rotating mechanism
Rotary speed isIf ensureing, adjacent imaging twice has 50% coincidence, in order to the frame frequency of the image procossing in later stage, then camera
Second embodiment
As shown in Fig. 2 the image camera includes first camera 1 and second camera 2, the image camera is face battle array phase
Machine.When using two cameras, two cameras are symmetrically installed, and plane where the camera optical axis is parallel to the earth's axis with satellite, camera
The optical axis is to the angle of the earth's axis with satellite
In other embodiments of the invention, the quantity and installation parameter of image camera can also be done according to application demand
The modification of adaptability, image camera can be set to symmetrical two cameras, three cameras being distributed in equilateral triangle, non-homogeneous
Several cameras deflected to same direction etc., its core is the camera optical axis and celestial body is angled to the earth's axis installs,
Realize that annular or sector region are covered by 360 degree of rotations of rotating mechanism, realized and covered along the complete of rail direction by the flight of satellite
Lid.To adjust the relation of satellite velocity and image camera installation parameter and kinematic parameter so that image camera each
Annular shooting area overlapping region is sufficiently large, the demand that shooting area under star is completely covered is met, while optimizing and revising satellite
The speed of service and the relation of image camera installation parameter and kinematic parameter, it is to avoid repeat excessive, increase data processing amount.
The imaging method for the big breadth optical imaging system based on rotation that the present invention is provided has both of which, the
A kind of pattern includes：
Step 1: image camera at the uniform velocity rotates；
Step 2: image camera is in initial position, imaging is once；Imaging mechanism is turned over to stop operating after an angle and treated
Re-imaging after stable, has overlapping region between front and rear imaging twice；Then the step of repeating rotation-stopping-stabilization-imaging；
Step 3: completing 360 ° of rotations, image camera is imaged once, it is ensured that overlapped with initial position imaging region；Step
Rapid four, repeat step two and three, until satellite leaves observation area overhead.
Second of pattern includes：
Step a, 360 ° of image camera at the uniform velocity rotates, image camera synchronous imaging；
Step b, carries out deblurring processing using Image Restoration Algorithm, obtains image.
The method that deblurring processing is carried out to image has been known to those skilled in the art, to be no longer described in detail.
Claims (6)
1. the big breadth optical imaging system based on rotation, including：Satellite, image camera, it is characterised in that the image camera
Axle clamp angle is more than 0 ° to the optical axis over the ground with satellite, and camera rotates around satellite to the earth's axis in imaging process.
2. according to the big breadth optical imaging system based on rotation described in claim 1, it is characterised in that also including whirler
Structure, described rotating mechanism one end is connected with satellite, and other end is connected with image camera；In imaging process, rotating mechanism with into
As camera is relatively fixed, rotating mechanism is rotated around satellite to the earth's axis.
3. according to the big breadth optical imaging system based on rotation described in claim 1, it is characterised in that image camera is fixed
In satellite platform, imaging process Satellite is relatively fixed with image camera, and satellite rotates around satellite to the earth's axis.
4. according to the big breadth optical imaging system based on rotation described in claim 1, it is characterised in that use single imaging
Camera, the image camera optical axis is to the angle of inclination of the earth's axis relative to satellite：Imaging
Around satellite, axle rotary speed is not less than camera over the groundUnit is rad/s, and the frame frequency of image camera isA
Be the single image camera breadth Polaroid to substar along wearing rail direction length, B be single camera to substar once into
The breadth of picture is along rail direction length, and R is earth radius, and H is satellite orbital altitude, and V is the flying speed of satellite, and L is required
It is imaged breadth.
5. according to the big breadth optical imaging system based on rotation described in claim 1, it is characterised in that the image camera
For area array cameras.
6. according to the big breadth optical imaging system based on rotation described in claim 1, it is characterised in that the image camera
The first image camera and the second image camera including relative to satellite axial symmetry step over the ground, first image camera and
Two image cameras are to the angle of the earth's axis relative to satellite：Image camera is around satellite
Axle rotary speed is not less than over the groundUnit is rad/s, and the frame frequency of image camera isA is single imaging
The camera breadth Polaroid to substar is the single camera breadth edge Polaroid to substar along rail direction length, B is worn
Rail direction length, R is earth radius, and H is satellite orbital altitude, and V is the flying speed of satellite, and L is desired imaging breadth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710445196.9A CN107168006B (en) | 2017-06-12 | 2017-06-12 | Big breadth optical imaging system based on rotation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710445196.9A CN107168006B (en) | 2017-06-12 | 2017-06-12 | Big breadth optical imaging system based on rotation |
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| Publication Number | Publication Date |
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| CN107168006A true CN107168006A (en) | 2017-09-15 |
| CN107168006B CN107168006B (en) | 2019-06-04 |
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| CN201710445196.9A Active CN107168006B (en) | 2017-06-12 | 2017-06-12 | Big breadth optical imaging system based on rotation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107918244A (en) * | 2017-11-02 | 2018-04-17 | 上海微小卫星工程中心 | Based on the big breadth optical imaging system of rotating conscan and method |
| CN109828362A (en) * | 2019-01-30 | 2019-05-31 | 武汉大学 | Ultra-large-width imaging method based on whole-satellite fast swing |
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| US3808361A (en) * | 1971-02-10 | 1974-04-30 | Messerschmitt Boelkow Blohm | Method and device for line-by-line photographing of an object |
| CN1358392A (en) * | 1999-06-25 | 2002-07-10 | 阿斯特罗文森国际公司 | Direct broadcast satellite imaging system and method providing real-time, continuous monitoring of earth from grostationary earth orbit |
| CN103983231A (en) * | 2014-05-16 | 2014-08-13 | 上海微小卫星工程中心 | Base and infrared horizon sensor using base |
| CN104071354A (en) * | 2014-05-28 | 2014-10-01 | 上海微小卫星工程中心 | Satellite casing and satellite using same |
| CN204096095U (en) * | 2014-09-01 | 2015-01-14 | 中国南方电网有限责任公司超高压输电公司天生桥局 | A kind of unmanned plane full angle image aerial device |
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2017
- 2017-06-12 CN CN201710445196.9A patent/CN107168006B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3808361A (en) * | 1971-02-10 | 1974-04-30 | Messerschmitt Boelkow Blohm | Method and device for line-by-line photographing of an object |
| CN1358392A (en) * | 1999-06-25 | 2002-07-10 | 阿斯特罗文森国际公司 | Direct broadcast satellite imaging system and method providing real-time, continuous monitoring of earth from grostationary earth orbit |
| CN103983231A (en) * | 2014-05-16 | 2014-08-13 | 上海微小卫星工程中心 | Base and infrared horizon sensor using base |
| CN104071354A (en) * | 2014-05-28 | 2014-10-01 | 上海微小卫星工程中心 | Satellite casing and satellite using same |
| CN204096095U (en) * | 2014-09-01 | 2015-01-14 | 中国南方电网有限责任公司超高压输电公司天生桥局 | A kind of unmanned plane full angle image aerial device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107918244A (en) * | 2017-11-02 | 2018-04-17 | 上海微小卫星工程中心 | Based on the big breadth optical imaging system of rotating conscan and method |
| CN109828362A (en) * | 2019-01-30 | 2019-05-31 | 武汉大学 | Ultra-large-width imaging method based on whole-satellite fast swing |
| CN109828362B (en) * | 2019-01-30 | 2020-07-07 | 武汉大学 | Ultra-large-width imaging method based on whole-satellite fast swing |
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| Publication number | Publication date |
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| CN107168006B (en) | 2019-06-04 |
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