CN203535224U - Infrared and laser composite detection system - Google Patents
Infrared and laser composite detection system Download PDFInfo
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- CN203535224U CN203535224U CN201320623465.3U CN201320623465U CN203535224U CN 203535224 U CN203535224 U CN 203535224U CN 201320623465 U CN201320623465 U CN 201320623465U CN 203535224 U CN203535224 U CN 203535224U
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Abstract
The utility model discloses an infrared and laser composite detection system. The system can achieve stable tracking of an infrared moving target, precise laser directing, and distance measurement of the target. The system comprises a foldback common-caliber optical receiver head. A color separation filter is used to separate infrared light and laser. Images of a small moving target are formed in an infrared camera. Coarse tracking of a two-dimensional rotary stand and fine tuning of a quick deflecting mirror are controlled according to the position of the center of mass of the target, so that the laser is accurately emitted to point to the target. A photomultiplier receives laser echo wave signals. Distance information of the target is calculated based on primary wave signals and echo wave signals of laser emission. The system can be carried on aircrafts, missiles and satellite platforms to achieve three-dimensional measurement of infrared targets to provide information for overall decision making.
Description
Technical field:
This patent relates to spatial point target detection and location technology, is specifically related to a kind of infrared laser complex probe system, can be applicable to terminal guidance and Space Object Detection.
Background technology:
Traditional large face battle array infrared focus plane is surveyed noncooperative target, there is high sensitivity, high two-dimensional space resolution and join the great dynamic range feature after rear two-dimentional turntable, can under complex environment, realize the image processor of target and tracking, and there is stronger anti-electromagnetic interference capability.But infrared imaging only can obtain the two-dimensional signal of target, cannot obtain accurate distance and the velocity information of target.By IR Passive Imaging and Laser Active Detection combination, form infrared/laser bimodulus complex probe, obtain the three-dimensional information of the angle-angle-distance of target, and can coordinate high speed information disposal system, data fusion target velocity and trace information.
The advantage that adopts infrared imaging/Laser Active Detection Compound Guidance Technology can bring into play both makes up deficiency separately, first utilize infrared imaging quick detection localizing objects in larger visual field, then utilize Laser Active Detection to obtain the high-resolution intensity image of suspected target and Range Profile, realize the identification of true and false target.And can be according to obtaining Fusion, give totally with maximum Information Assurance, make a policy.
Summary of the invention:
The object of this patent is to provide a kind of novel pointing complex probe system that is applied to terminal guidance and Space Object Detection, adopts IR Passive detection of a target orientation accurately to guide laser guide, adopts single photon counting technology detection of a target distance and speed.This patent is conducive to improve overall to the detection and identify of target and tracking power, gives overall Information Assurance fully.
Native system structure as shown in Figure 1, comprising: thick follower 1, optical telescope 2, quick deflecting mirror 3, generating laser 4, spectrum groupware 5, photomultiplier 6, optical alignment assembly 7, infrared camera 8, laser mirror 9, optical focus assembly 10.
Described thick follower 1 is by angular displacement turntable (pitching ± 15 °, stepping accuracy 200urad) and universal stage (360 °, stepping accuracy 250urad) unitized construction; Described optical telescope 2 is reflective logical light telescopic systems; Described quick deflecting mirror 3 is quick deflecting mirrors of Piezoelectric Ceramic, selects the quick deflecting mirror of piezoelectricity of the S334 model of PI company; Described generating laser 4 is that wavelength is 532nm, the pulsed laser that live width is 0.5nm, and the angle of divergence is 0.2mrad, energy is greater than 3uJ; Described spectrum groupware 5 is by infrared band, the optical module of reflect visible light wave band; Described photomultiplier 6 is single-element detectors of single photon magnitude, selects 10682 type single photon counting pattern pieces of Bin Song company; Described optical alignment assembly 7 is return laser beam to be collimated to the optical module of photomultiplier photosurface; Described infrared camera 8 is infrared surface array cameras, and infrared focus plane is selected the 640*512 medium wave refrigeration mode detector of sofradir company, and picture frame frequency is made as 50Hz; Described laser mirror 9 is visible ray completely reflecting mirrors; Described optical focus assembly 10 is infrared band light to be focused on to the optical module of infrared focus plane;
Described quick deflecting mirror 3, generating laser 4, spectrum groupware 5, photomultiplier 6, optical alignment assembly 7, infrared camera 8, laser mirror 9, optical focus assembly 10 are all fixed on optical telescope 2, and along with thick follower 1 rotates; Infrared camera 8 and photomultiplier 6 share optical telescope 2; Deflecting mirror 3 and laser mirror 9 combinations are fixed on generating laser 4 the place aheads fast, and the zero-bit of deflecting mirror 3 is pointed to parallel with optical telescope 2 optical axises fast;
Described generating laser 4 Emission Lasers reflex to quick deflecting mirror 3 by laser mirror 9, point to infrared target; Target reflection return laser beam, after optical telescope 2, reflexes to the rear photosurface that arrives photomultiplier 6 of optical alignment assembly 7 collimation, exploring laser light echoed signal by spectrum groupware 5; The infrared band spectrum of target, by after optical telescope 2, by spectrum groupware 5 transmissions, focuses on the detector focal plane imaging of infrared camera 8 by optical focus assembly 10.
The principle of work of system is as follows:
The closed search infrared target of thick follower 1 and infrared camera 8, guarantee that target is in telescope field range, deflecting mirror 3 is adjusted generating laser 4 accurately sensing fast fast, the accurate run-home of pulse laser, photomultiplier 6 detection of photons signals, by laser main wave signal and photon echo signal, process, extract target range.
Thick follower is by setting scan mode extensive search target, pattern stops search after discovery target, according to the low frequency adjustment of thick tracking, keep target in infrared visual field, identification target barycenter two dimension orientation drives quick deflecting mirror to rotate, and is that laser accurately points to target.Photomultiplier receives laser single photon signal, by main ripple and echoed signal relevant treatment, calculates the real range information in real time of target, finally reaches the azimuth-range information measurement of target.
Complete system processing controls block diagram as shown in Figure 3.
This patent has following beneficial effect:
By IR Passive Imaging, identify target azimuth, in conjunction with the range observation of active laser high precision, effectively obtain target azimuth and range information, angle-angle-the range observation of formation to target with high precision, greatly enrich the detection information of target, can be applied in widely target survey of deep space and terminal guidance field.
Accompanying drawing explanation:
Fig. 1 is the infrared of this patent and laser complex probe system construction drawing;
In figure: 1. thick follower; 2. optical telescope; 3. quick deflecting mirror;
4. generating laser; 5. spectrum groupware; 6. photomultiplier;
7. optical alignment assembly; 8. infrared camera; 9. laser mirror;
10. optical focus assembly.
In Fig. 2 infrared camera, target location changes schematic diagram;
In figure: the position of 11. targets outside visual field;
The position (thick follower searching target result) of 12. targets in visual field.
Fig. 3 system processing controls block diagram.
Embodiment:
Below in conjunction with accompanying drawing, the embodiment of this patent is described in further detail:
1. whole start, thick follower 1 starts scanning by the path of setting, and infrared camera 8 is ceaselessly identified and is found target.When target enters infrared visual field, infrared camera 8 is found also lock onto target, and thick follower 1 stops scanning.Infrared camera calculates target centroid position, feeds back to main control unit, and the thick follower 1 of master control adjustment relies on infrared image center object image spots position, as Fig. 2 shows.
2. Infrared Targets information and laser echo signal are turned back and are focused on spectrum groupware 5 by optical telescope 2, and spectrum groupware sees through infrared band reflect visible light wave band.Infrared band focuses on the imaging focal plane of infrared camera 8 after optical focus assembly 10, infrared camera 8 is selected the medium-wave infrared camera that wave band is 3.7-4.8um, infrared focus plane is selected the 640*512 medium wave refrigeration mode detector of sofradir company, and frame frequency is output as 50Hz.Infrared picture data is minute two-way output after collection plate, and the USB of leading up to is transferred to computer host computer, and for computer storage, detection, another road is directly transferred to graphics processing unit.Graphics processing unit is processed the barycenter orientation that obtains target to infrared image real-time analysis, after barycenter azimuth coding, be transferred to main control unit, after main control unit decoding, change two-way into and drive signal to be transferred to the driving circuit of quick deflecting mirror 3, drive quick deflecting mirror to rotate.Laser instrument Emission Lasers arrives quick deflecting mirror 3 by laser mirror 9 reflections, and then points to target.
3., after hitting the mark, return laser beam reflexes to optical alignment assembly 7 by optical telescope 2 spectrum groupware 5 of turning back, and finally arrives photomultiplier 6 photosurfaces.The 10682 type single photon counting pattern pieces of photomultiplier 6(shore pine) the single photon information that response is returned, unit while exporting TTL pulse signal to survey, during survey, unit produces main ripple signal in conjunction with 4 transmittings of pulsed laser transmitter, calculate the time interval of each echo single photon and main ripple, result of calculation is all input to main control unit, main control unit extracts the real time interval by time correlation and Poisson filtering algorithm, and is converted to distance value output.
Claims (1)
- One kind infrared with laser complex probe system, it comprises: thick follower (1), optical telescope (2), quick deflecting mirror (3), generating laser (4), spectrum groupware (5), photomultiplier (6), optical alignment assembly (7), infrared camera (8), laser mirror (9), optical focus assembly (10), is characterized in that:Described thick follower (1) is that stepping accuracy be the 200urad angle of pitch is the unitized construction of the angular displacement turntable of ± 15 ° and the stepping accuracy 360 ° of universal stages that are 250urad; Described optical telescope (2) is reflective logical light telescopic system; Described quick deflecting mirror (3) is the quick deflecting mirror of Piezoelectric Ceramic, selects the quick deflecting mirror of piezoelectricity of the S334 model of PI company; Described generating laser (4) is that wavelength is 532nm, and live width is 0.5nm, and the angle of divergence is 0.2mrad, and energy is greater than the pulsed laser of 3uJ; Described spectrum groupware (5) is by infrared band, the optical module of reflect visible light wave band; Described photomultiplier (6) is the single-element detector of single photon magnitude, selects 10682 type single photon counting pattern pieces of Bin Song company; Described optical alignment assembly (7) is return laser beam to be collimated to the optical module of photomultiplier photosurface; Described infrared camera (8) is infrared surface array camera, and infrared focus plane is selected the 640*512 medium wave refrigeration mode detector of sofradir company, and picture frame frequency is made as 50Hz; Described laser mirror (9) is visible ray completely reflecting mirror; Described optical focus assembly (10) is infrared band light to be focused on to the optical module of infrared focus plane;It is upper that described quick deflecting mirror (3), generating laser (4), spectrum groupware (5), photomultiplier (6), optical alignment assembly (7), infrared camera (8), laser mirror (9), optical focus assembly (10) are all fixed on optical telescope (2), and along with thick follower (1) rotates; Infrared camera (8) and photomultiplier (6) share optical telescope (2); Deflecting mirror (3) and laser mirror (9) combination are fixed on generating laser (4) the place ahead fast, and the zero-bit of deflecting mirror (3) is pointed to parallel with optical telescope (2) optical axis fast;Described generating laser (4) Emission Lasers reflexes to quick deflecting mirror (3) by laser mirror (9), points to infrared target; Target reflection return laser beam, after optical telescope (2), reflexes to the rear photosurface that arrives photomultiplier (6) of optical alignment assembly (7) collimation, exploring laser light echoed signal by spectrum groupware (5); The infrared band spectrum of target, by after optical telescope (2), by spectrum groupware (5) transmission, focuses on the detector focal plane imaging of infrared camera (8) by optical focus assembly (10).
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| CN201320623465.3U CN203535224U (en) | 2013-10-10 | 2013-10-10 | Infrared and laser composite detection system |
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| CN201320623465.3U CN203535224U (en) | 2013-10-10 | 2013-10-10 | Infrared and laser composite detection system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499818A (en) * | 2013-10-10 | 2014-01-08 | 中国科学院上海技术物理研究所 | Infrared and laser compound detection system |
| CN104536009A (en) * | 2014-12-30 | 2015-04-22 | 华中科技大学 | Laser infrared composite ground building recognition and navigation method |
| CN107656540A (en) * | 2017-08-30 | 2018-02-02 | 南京理工大学 | Uncooled ir and the compound circumferential scanning detection device of laser |
| US10359496B2 (en) | 2015-08-10 | 2019-07-23 | Viasat, Inc. | Satellite antenna with sensor for line-of-sight detection |
| CN111007527A (en) * | 2019-12-14 | 2020-04-14 | 中国船舶重工集团公司第七一七研究所 | Infrared laser composite rapid imaging tracking device |
| CN111045102A (en) * | 2019-12-28 | 2020-04-21 | 中国科学院长春光学精密机械与物理研究所 | Infrared and laser receiving common-caliber composite detection system |
-
2013
- 2013-10-10 CN CN201320623465.3U patent/CN203535224U/en not_active Withdrawn - After Issue
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499818A (en) * | 2013-10-10 | 2014-01-08 | 中国科学院上海技术物理研究所 | Infrared and laser compound detection system |
| CN103499818B (en) * | 2013-10-10 | 2015-07-29 | 中国科学院上海技术物理研究所 | A kind of infrared and laser compound detection system |
| CN104536009A (en) * | 2014-12-30 | 2015-04-22 | 华中科技大学 | Laser infrared composite ground building recognition and navigation method |
| CN104536009B (en) * | 2014-12-30 | 2016-12-28 | 华中科技大学 | Above ground structure identification that a kind of laser infrared is compound and air navigation aid |
| US10359496B2 (en) | 2015-08-10 | 2019-07-23 | Viasat, Inc. | Satellite antenna with sensor for line-of-sight detection |
| US11422219B2 (en) | 2015-08-10 | 2022-08-23 | Viasat, Inc. | Satellite antenna with sensor for line-of-sight detection |
| US12078739B2 (en) | 2015-08-10 | 2024-09-03 | Viasat, Inc. | Satellite antenna with sensor for line-of-sight detection |
| CN107656540A (en) * | 2017-08-30 | 2018-02-02 | 南京理工大学 | Uncooled ir and the compound circumferential scanning detection device of laser |
| CN107656540B (en) * | 2017-08-30 | 2019-11-15 | 南京理工大学 | Uncooled ir and the compound circumferential scanning detection device of laser |
| CN111007527A (en) * | 2019-12-14 | 2020-04-14 | 中国船舶重工集团公司第七一七研究所 | Infrared laser composite rapid imaging tracking device |
| CN111007527B (en) * | 2019-12-14 | 2021-09-14 | 中国船舶重工集团公司第七一七研究所 | Infrared laser composite rapid imaging tracking device |
| CN111045102A (en) * | 2019-12-28 | 2020-04-21 | 中国科学院长春光学精密机械与物理研究所 | Infrared and laser receiving common-caliber composite detection system |
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