CN101173984A - Spaceborne target detection tracing camera in sun viewing blind zone - Google Patents
Spaceborne target detection tracing camera in sun viewing blind zone Download PDFInfo
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- CN101173984A CN101173984A CNA2007101707255A CN200710170725A CN101173984A CN 101173984 A CN101173984 A CN 101173984A CN A2007101707255 A CNA2007101707255 A CN A2007101707255A CN 200710170725 A CN200710170725 A CN 200710170725A CN 101173984 A CN101173984 A CN 101173984A
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Abstract
The invention discloses a probing and tracking camera for targets on solar observation blind areas, which can be arranged on a satellite to observe and track targets on the solar observation blind areas. The camera comprises an attenuation filter, an optical system, a probe and a data processing circuit; wherein, a ray of light from an object space passes through the attenuation filter and the optical system and forms an image on the probe. The attenuation filter is used to adjust the intensity of light coming into the camera, and the optical system adopts a double-Gauss near infrared teleobjective system; the probe adopts a CMOS probe, and the dynamic range is designed as follows: the brightness of the sun, sunspot images is designed out of the dynamic range of the camera, and the brightness of the observed targets is designed within the saturation value of the camera. The data processing circuit conducts reverse-phase processing over the images output by the probe, so as to enable the system to acquire higher positioning precision of the targets. The probing and tracking camera in the invention, together with a sun sensor, a two-dimensional tracker and an image processing system, forms a whole probing and tracking system for targets.
Description
Technical field
The present invention relates to detection, the tracking technique of extraterrestrial target, specifically be meant a kind of target detection tracing camera in sun viewing blind zone, it can be installed on the satellite target that is positioned at sun viewing blind zone is observed and followed the tracks of.
Background technology
At present, field of detecting at the space remote sensing satellite, conventional remote sensing camera is in the face of the solar time, because sun brightness has surpassed the dynamic range of camera, most cameras will be by " blinding " in the face of the sun, for heavy caliber observation camera,, even can cause permanent damage to whole imaging system for a long time in the face of the sun.Therefore, no matter be the observation camera of space remote sensing satellite or airborne tracking equipment, in the blind area that all has a space multistory angle in the face of solar direction.
From U.S. Pat 5,093,574 as can be known, be applied to the ultraviolet detection technology of military field by detecting band being located at the Atmospheric Absorption window, and two array detection methods, can only be used in atmospheric envelope and the military target within the 3-6km be surveyed, and can only detect the radiation feature of specific objective, after target is flame-out, can't accurately survey with interior.And U.S. Pat 5,710,423 has also proposed an effective method at the detection blind area of the solar direction of ground blocker (GBI) system existence, adopts two kill vehicles to avoid the sun in the exoatmosphere target is surveyed.This as can be seen method has increased the consumption of a kill vehicles.
The general method of hiding the sun that adopts of existing sun viewing blind zone target detection technology comes target is observed, and has certain limitation in the use.
Summary of the invention
The purpose of this invention is to provide a kind of spaceborne target detection tracing camera in sun viewing blind zone, solve the detection that is positioned at the solar blind target and the technical matters of tracking.
Spaceborne target detection tracing camera in sun viewing blind zone structure of the present invention as shown in Figure 1, it is made up of decay optical filter 1, optical system 2, detector 3 and data processing circuit 4, is imaged on the detector 3 through overdamping optical filter 1, optical system 2 successively from the light of object space.Decay optical filter 1 is used for adjusting the intensity that enters camera light, guarantee that the energy of sunshine and sunspot picture on camera can not damage detector 3, and imaging is saturated bright background; Optical system 2 adopts double gauss telephotolens system, and for obtaining higher target background contrast, its service band is arranged on near-infrared band; Detector 3 adopts cmos detector, the setting of its dynamic range as shown in Figure 2, detector 3 designs the sun, sunspot brightness of image beyond camera dynamic range, observed object brightness is designed in less than camera saturation value scope, like this, the sun and black mole imaging are saturated bright background, and target to look like be the picture with certain gray-scale value, thereby avoid the influence of sunspot to Target Recognition; Data processing circuit 4 is except that the view data of detector output is carried out the conventional processing, also conventional processing is obtained bright background under the gray scale target image carry out anti-phase processing, make it be converted into bright target image under the black background, can obtain higher target location accuracy thereby make image processing system in the follow-up Target Tracking System carry out centroid algorithm to image.
Target detection tracing camera in sun viewing blind zone of the present invention cooperates the complete target detection tracing system of formation with sun sensor, two-dimensional tracking device, this system constitutes as shown in Figure 3, it comprises sun sensor, target detection tracing camera, two-dimensional tracking device and image processing system, and sun sensor all is installed on the two-dimensional tracking device with the target following camera and keeps the direction of optical axis identical.Sun sensor guarantees that the target following camera of system points to solar azimuth and finds target and carry out imaging, the method that image processing system is handled by multiframe is determined the position and the movement locus of target, and according to trace routine of track compiling of target travel, indication two-dimensional tracking device continues to survey and follow the tracks of to target.The concrete course of work of aims of systems detecting and tracking is as follows: at first by big visual field sun sensor the sun is caught, then the position of sun information that captures being sent to the two-dimensional tracking device by the RS422 interface points to the sun, target detection tracing camera is under the sensing of sun sensor, aligning is positioned at the target of solar blind position and target is caught, calculate the azimuth information of tracking target by the spaceborne image processing system of target following camera, this azimuth information is sent to the two-dimensional tracking device on the one hand, indication two-dimensional tracking device is followed the tracks of target, sends the data on the other hand under the Star Service system and passes ground command system; Target detection tracing camera can also pass ground with under the view data according to instruction simultaneously, for ground staff's labor.
The invention provides a kind of is the imaging background with strong daylight, the target detection tracing system that utilizes target that blocking of the sun carried out imaging, it have under space environment to the solar direction target run survey, discovery and tracking power.It is clear that it has imaging, and the advantage that detection range is far away can be filled up the observation blind area of conventional space monitoring camera.
Description of drawings
Fig. 1 is target detection observation camera structure synoptic diagram.
Among the figure: 1---the decay optical filter;
2---optical system;
3---detector;
4---data processing circuit.
Fig. 2 is provided with synoptic diagram for the target detection tracing camera dynamic range.
Fig. 3 is that spaceborne solar blind Target Tracking System constitutes block diagram.
Embodiment
Below in conjunction with drawings and Examples the specific embodiment of the present invention is described in further detail:
1 spaceborne target detection tracing camera in sun viewing blind zone constitutes block diagram with reference to the accompanying drawings, and we have made up one to the solar blind target detection tracing camera.The design of each parts of camera is specifically described as follows:
Decay optical filter 1---decay optical filter 1 adopts 1/2000 optical attenuator optical filter, when selecting 1/2000 optical filter for use, cooperate the selection of cmos detector time shutter, can guarantee echo signal within the observation brightness range of target detection tracing camera, and the sun and sunspot background still are to close on saturated background signal after being decayed by optical filter.
Above-mentioned target detection tracing camera can become the picture of 2 * 2 pixel numbers to 500 kilometers 10 meters outer big wisps on as the plane.
For fear of being obscured, sunspot and observed object can not distinguish, it is saturated background more than or equal to the target imaging of sunspot brightness that this target detection tracing camera makes brightness by demarcation, because observed object brightness much smaller than sunspot, can be set off out observed object like this under bright background.
Above-mentioned work is to realize by the dynamic range of adjusting detector 3, the setting of the dynamic range of detecting and tracking camera detector 3 makes the brightness of the sun and sunspot beyond camera dynamic range, make observed object brightness less than the camera saturation value, thereby avoid the influence of sunspot Target Recognition.The view data of 4 pairs of detectors of data processing circuit 3 output is carried out routine and is accepted image to be carried out after the processing anti-phase, makes image be converted into bright target image under the black background.The subsequent image processing system carries out centroid algorithm to this image can obtain higher target location accuracy, and determine the position and the movement locus of target by the method that multiframe is handled, and according to trace routine of track compiling of target travel, the motion of tracking target.
Claims (4)
1. target detection tracing camera in sun viewing blind zone, it is made of optical system (2), detector (3) and data processing circuit (4), it is characterized in that: at optical system (2) front end, it also has one to prevent that sunshine and sunspot from making the decay optical filter (1) of detector (3) blinding, light from object space is imaged on the detector (3) through overdamping optical filter (1), optical system (2) successively, output image data after data processing circuit (4) is handled.
2. a kind of target detection tracing camera in sun viewing blind zone according to claim 1 is characterized in that: said optical system (2) is a double gauss type near infrared telephotolens.
3. a kind of target detection tracing camera in sun viewing blind zone according to claim 1, it is characterized in that: said detector (3) is a cmos detector, its dynamic range is set to: the sun, the saturation region of sunspot brightness of image beyond camera dynamic range, observed object brightness is in the scope less than the dynamic saturation value of camera.
4. a kind of target detection tracing camera in sun viewing blind zone according to claim 1 is characterized in that: said data processing circuit (4) also carries out anti-phase processing to image except that view data is carried out the conventional processing.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101707255A CN101173984A (en) | 2007-11-21 | 2007-11-21 | Spaceborne target detection tracing camera in sun viewing blind zone |
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| CNA2007101707255A CN101173984A (en) | 2007-11-21 | 2007-11-21 | Spaceborne target detection tracing camera in sun viewing blind zone |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538786A (en) * | 2012-01-16 | 2012-07-04 | 浙江大学 | Full field solar sensing device and method for micro satellite |
| CN104615990A (en) * | 2015-02-10 | 2015-05-13 | 中国科学院国家天文台 | Method for automatically recognizing macula based on Huairou full-disk single-color image |
| CN105319665A (en) * | 2015-11-19 | 2016-02-10 | 江西联创电子有限公司 | Automatic focusing lens combination |
| CN105373140A (en) * | 2014-08-20 | 2016-03-02 | 深圳Tcl新技术有限公司 | Light source tracking method and system |
| CN105425380A (en) * | 2015-11-19 | 2016-03-23 | 中国人民解放军国防科学技术大学 | Auxiliary quick aiming device and auxiliary quick aiming method for narrow-field space remote sensing cameras |
| CN110762352A (en) * | 2019-11-15 | 2020-02-07 | 航宇救生装备有限公司 | Quick-release camera telephoto lens supporting device |
-
2007
- 2007-11-21 CN CNA2007101707255A patent/CN101173984A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538786A (en) * | 2012-01-16 | 2012-07-04 | 浙江大学 | Full field solar sensing device and method for micro satellite |
| CN102538786B (en) * | 2012-01-16 | 2014-12-24 | 浙江大学 | Full field solar sensing device and method for micro satellite |
| CN105373140A (en) * | 2014-08-20 | 2016-03-02 | 深圳Tcl新技术有限公司 | Light source tracking method and system |
| CN105373140B (en) * | 2014-08-20 | 2018-04-10 | 深圳Tcl新技术有限公司 | Light source tracking method and system |
| CN104615990A (en) * | 2015-02-10 | 2015-05-13 | 中国科学院国家天文台 | Method for automatically recognizing macula based on Huairou full-disk single-color image |
| CN105319665A (en) * | 2015-11-19 | 2016-02-10 | 江西联创电子有限公司 | Automatic focusing lens combination |
| CN105425380A (en) * | 2015-11-19 | 2016-03-23 | 中国人民解放军国防科学技术大学 | Auxiliary quick aiming device and auxiliary quick aiming method for narrow-field space remote sensing cameras |
| CN105319665B (en) * | 2015-11-19 | 2018-06-15 | 江西联创电子有限公司 | Autofocus lens combine |
| CN110762352A (en) * | 2019-11-15 | 2020-02-07 | 航宇救生装备有限公司 | Quick-release camera telephoto lens supporting device |
| CN110762352B (en) * | 2019-11-15 | 2024-05-24 | 航宇救生装备有限公司 | Quick-release camera long-focus lens supporting device |
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Open date: 20080507 |