CN101832770A - Method for realizing large-area coverage of planar array splicing detectors through four-time pointing of small reflector - Google Patents
Method for realizing large-area coverage of planar array splicing detectors through four-time pointing of small reflector Download PDFInfo
- Publication number
- CN101832770A CN101832770A CN201010165222A CN201010165222A CN101832770A CN 101832770 A CN101832770 A CN 101832770A CN 201010165222 A CN201010165222 A CN 201010165222A CN 201010165222 A CN201010165222 A CN 201010165222A CN 101832770 A CN101832770 A CN 101832770A
- Authority
- CN
- China
- Prior art keywords
- detector
- planar array
- tint
- tmove
- begins
- 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.)
- Pending
Links
Images
Landscapes
- Transforming Light Signals Into Electric Signals (AREA)
Abstract
The invention discloses a method for realizing the large-area coverage of planar array splicing detectors through four-time pointing of a small reflector. In the method, the image space realizes the seamless large-area coverage of four groups of detectors which are triangularly arranged through the four-time pointing of a small pointing mirror. By adopting the mode provided by the invention, the large-area detection on any scale can be realized.
Description
Technical field
The present invention relates to the photoelectric instrument technology, specifically refer to the big area coverage method of a kind of four-time pointing of small reflector realization planar array splicing detectors.
Background technology
At present, in the space remote sensing field, realize that in geo-stationary orbit high time resolution and high spatial resolution need have ultra-large planar array detector, for example: geo-stationary orbit realizes the covering in 3000Km*3000Km zone, the substar resolution of 100m, then adopt planar array detector to stare, the scale of detector needs 30000 pixel *, 30000 pixels.With present detector manufacturing capacity, no matter be visible detector or infrared eye, all be difficult to reach the integration capability of so extensive pixel.Therefore, formation method based on the splicing of facet array detector becomes one of method of the space remote sensing camera that solves high-space resolution, wide covering detection, and owing to have photostable space between the planar array detector of splicing, a kind of good mode of operation is vital.
Summary of the invention:
The invention provides a kind of catoptron four-time pointing and realize the big area coverage method of planar array splicing detectors, solve the problem that the object space scan mirror is excessive, accuracy requirement is too high that exists in the prior art, and adopt as square small step and advance the problem that picture element that the scan mirror imaging caused descends.
Optical system structure of the present invention as shown in Figure 2, optical system is the optical system of a big visual field, long-focus, big image planes long working distance, on the picture side of optical system light path, place one 360 degree sense of rotation mirror, optical system imaging reflective projection is being positioned at scan mirror up and down on four detector set on four orientation by described 360 degree sense of rotation mirrors.Scan mirror is by four-time pointing timesharing imaging on detector set.
The structure of described detector set as shown in Figure 1, detector set adopts the isosceles triangle connecting method, each square frame is represented the sensitization size of a planar array detector among Fig. 1, if planar array detector is N * N unit, photosensitive unit is of a size of M um, and the size of space b among Fig. 1 between single planar array detector size a and planar array detector is:
a＝N×M；
b＜a；
B is set to lack 20 row (row) pixels than single planar array detector size a, that is:
a-b＝20×M；
Total system adopts 4 planar array detector splicing assemblies altogether.The modes of emplacement of detector set is mirrored to behind the same plane as shown in Figure 3.
The working method of system imaging is as follows:
1) imagery side's 360 degree scan mirror directed towards detector groups 1 during T0 at first, detector set 1 begins to carry out integration, T0+Tint constantly, scan mirror directed towards detector group 2, each planar array detector on the detector set 1 begins to read simultaneously simultaneously;
2) T0+Tint+Tmove moment detector set 2 beginning integrations, in the T0+2*Tint+Tmove moment, scan mirror begins directed towards detector group 3, and each planar array detector on the detector set 2 begins to read simultaneously simultaneously;
3) T0+2*Tint+2*Tmove moment detector set 3 beginning integrations, in the T0+3*Tint+2*Tmove moment, scan mirror begins directed towards detector group 4, and each planar array detector on the detector set 3 begins to read simultaneously simultaneously;
4) T0+3*Tint+3*Tmove moment detector set 3 beginning integrations, in the T0+4*Tint+3*Tmove moment, scan mirror begins directed towards detector group 1, and each the sheet planar array detector on the detector set 4 begins to read simultaneously simultaneously; T0+4*Tint+4*Tmove is detector set 1 beginning integration constantly, finishes Polaroid circulation.
With this mode of operation, Polaroid required time is 4*Tint+4*Tmove, and wherein Tint is the detector integrates time, and Tmove is that scan mirror revolves and turn 90 degrees to stablizing required time.
5) after circulation imaging, the image after 4 detector set imagings can obtain region-wide image shown in Figure 3 after by geometrical registration.
The system that the invention has the advantages that does not need the detector of bigbore scan mirror and big face battle array just can realize that big zone covers imaging.
Description of drawings:
Fig. 1 planar array detector spelling access node composition.
Fig. 2 optical system structure synoptic diagram.
Fig. 3 detector set locus synoptic diagram.
Embodiment is:
Conventional remote sensing camera carries out High Precision One Dimensional or two-dimentional stepping by the object space scan mirror, realize the big regional imaging of single little planar array detector or facet array detector array component, for the big fabric width camera of high resolving power, because optical system primary mirror bore is very big, the scan mirror that needs can be very big.The present invention provides 4 of a kind of employings based on 4096 pixel *, 4096 pixel planar array detectors splicing array component and 1 picture side's one dimension scan mirror, points to by 4 times, realizes the big zone covering of 48000 pixel *, 48000 pixels.If this camera is placed on geostationary orbit, substar resolution is 250m, can realize that the overall situation of earth disk covers.
The arrangement mode of 1 detector
Planar array detector adopts isosceles triangle splicing (as shown in Figure 1), and each square frame is represented the size of a detector light-sensitive surface battle array among Fig. 1, and example adopts the visible ccd detector of 4096*4096 unit, and pixel dimension is 10um.Therefore, a=40.96mm among Fig. 1, b=40.76mm.System adopts 4 planar array detector splicing assemblies as shown in Figure 1 altogether.
Light path design after 2 optical systems
The optical system field angle is 18 °, and focal length is 1.432m, and the image planes size is 0.42m, and back work distance is 900mm, places one 360 degree sense of rotation mirror behind all optical mirror slips, by four-time pointing timesharing imaging on detector set shown in Figure 2.
The modes of emplacement of detector is mirrored to behind the same plane as shown in Figure 3.
3 system operating modes
The working method of system is imagery side's 360 degree scan mirror directed towards detector groups 1 during for T0 at first, and detector set 1 begins to carry out integration, T0+Tint constantly, scan mirror directed towards detector group 2,36 planar array detectors on the detector set 1 begin to read simultaneously simultaneously;
T0+Tint+Tmove is detector set 2 beginning integrations constantly, and in the T0+2*Tint+Tmove moment, scan mirror begins directed towards detector group 3, and 36 planar array detectors on the detector set 2 begin to read simultaneously simultaneously;
T0+2*Tint+2*Tmove is detector set 3 beginning integrations constantly, and in the T0+3*Tint+2*Tmove moment, scan mirror begins directed towards detector group 4, and 36 planar array detectors on the detector set 3 begin to read simultaneously simultaneously;
T0+3*Tint+3*Tmove is detector set 3 beginning integrations constantly, and in the T0+4*Tint+3*Tmove moment, scan mirror begins directed towards detector group 1, and 36 planar array detectors on the detector set 4 begin to read simultaneously simultaneously; T0+4*Tint+4*Tmove is detector set 1 beginning integration constantly, finishes Polaroid circulation.With this mode of operation, Polaroid required time is 4*Tint+4*Tmove, and wherein Tint is the detector integrates time, and Tmove is that scan mirror revolves and turn 90 degrees to stablizing required time.
After the circulation imaging, the image after 4 detector set imagings can obtain region-wide image shown in Figure 3 after by geometrical registration.
Claims (3)
1. a four-time pointing of small reflector realizes that the big zone of planar array splicing detectors covers imaging system, it comprises optical system, revolves three-sixth turn sense of rotation mirror and detector set, it is characterized in that: on the side's of elephant light path of the optical system of a big visual field, long-focus, big image planes long working distance, place one 360 degree sense of rotation mirror, optical system imaging reflective projection is being positioned at scan mirror up and down on four detector set on four orientation by described 360 degree sense of rotation mirrors.
2. a kind of small reflector according to claim 1 repeatedly points to realizes that the big zone of planar array splicing detectors covers imaging system, it is characterized in that: described detector set is spliced by a plurality of planar array detectors, detector set adopts the isosceles triangle connecting method, if planar array detector is N * N unit, photosensitive unit is of a size of Mum, and the size of space b between single planar array detector size a and planar array detector is:
a＝N×M；
B is set to the little 20 row or column pixels than single planar array detector size a, that is:
b＝a-20×M；
3. formation method based on the described system of claim 1 is characterized in that may further comprise the steps:
1) imagery side's 360 degree scan mirror directed towards detector groups 1 during T0 at first, detector set 1 begins to carry out integration, T0+Tint constantly, scan mirror directed towards detector group 2, each planar array detector on the detector set 1 begins to read simultaneously simultaneously;
2) T0+Tint+Tmove moment detector set 2 beginning integrations, in the T0+2*Tint+Tmove moment, scan mirror begins directed towards detector group 3, and each planar array detector on the detector set 2 begins to read simultaneously simultaneously;
3) T0+2*Tint+2*Tmove moment detector set 3 beginning integrations, in the T0+3*Tint+2*Tmove moment, scan mirror begins directed towards detector group 4, and each planar array detector on the detector set 3 begins to read simultaneously simultaneously;
4) T0+3*Tint+3*Tmove moment detector set 3 beginning integrations, in the T0+4*Tint+3*Tmove moment, scan mirror begins directed towards detector group 1, and each the sheet planar array detector on the detector set 4 begins to read simultaneously simultaneously; T0+4*Tint+4*Tmove is detector set 1 beginning integration constantly, finishes Polaroid circulation;
5) after circulation imaging, the image after 4 detector set imagings can obtain region-wide image after by geometrical registration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010165222A CN101832770A (en) | 2010-04-29 | 2010-04-29 | Method for realizing large-area coverage of planar array splicing detectors through four-time pointing of small reflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010165222A CN101832770A (en) | 2010-04-29 | 2010-04-29 | Method for realizing large-area coverage of planar array splicing detectors through four-time pointing of small reflector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101832770A true CN101832770A (en) | 2010-09-15 |
Family
ID=42716924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010165222A Pending CN101832770A (en) | 2010-04-29 | 2010-04-29 | Method for realizing large-area coverage of planar array splicing detectors through four-time pointing of small reflector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101832770A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188851A (en) * | 2018-09-19 | 2019-01-11 | 白荣超 | The spaceborne imaging system of large format |
-
2010
- 2010-04-29 CN CN201010165222A patent/CN101832770A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188851A (en) * | 2018-09-19 | 2019-01-11 | 白荣超 | The spaceborne imaging system of large format |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3608717B1 (en) | Wide-field of view (fov) imaging devices with active foveation capability | |
| US10070055B2 (en) | Devices and methods for optically multiplexed imaging | |
| KR100988872B1 (en) | Method and imaging system for obtaining complex images using rotationally symmetric wide-angle lens and image sensor for hardwired image processing | |
| US7486311B2 (en) | Moving imager camera for track and range capture | |
| US8937639B2 (en) | Interlaced focal plane array for wide-area surveillance | |
| US20030081952A1 (en) | Method and apparatus for omnidirectional three dimensional imaging | |
| JP6716218B2 (en) | Multiple pixel pitch super resolution technology | |
| KR20050043925A (en) | Retinal array compound camera system | |
| US10462344B2 (en) | Imaging system having multiple imaging sensors and an associated method of operation | |
| BR102013027425A2 (en) | Multispectral Focal Image Array | |
| CN101256275A (en) | Microminiaturization co-image face panoramic imagery technique | |
| CN104159007B (en) | Point target searching detection device based on multi-linear time lag extension sampling | |
| US6320611B1 (en) | Method and device for air-ground recognition for optoelectronic equipment | |
| CN1702452A (en) | Digital micromirror multi-target imaging spectrometer device | |
| CN217087973U (en) | Space infrared camera for realizing high-aging view field splicing through image space scanning | |
| CN106813781B (en) | A kind of super large area array compound splicing method of infrared detector | |
| CN109470236B (en) | Star sensor | |
| CN101832770A (en) | Method for realizing large-area coverage of planar array splicing detectors through four-time pointing of small reflector | |
| CN108124127A (en) | Panoramic scanning monitoring system | |
| CN108121146A (en) | Panoramic scanning device | |
| CN101840005A (en) | Method for realizing large-area coverage of area array splicing detector through secondary pointing of reflector | |
| CN106060354A (en) | Image pick-up device with two large-format high-frame digital CCDs (Charge Coupled Device) | |
| JPH11289485A (en) | Optical scouting system | |
| TW201502572A (en) | System architecture for a constant footprint, constant gsd, constant spatial resolution linescanner | |
| KR100624051B1 (en) | Cmos image sensor and panoramic imaging system having the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100915 |