CN101526420B - Device simulating laser target of small-angle movement - Google Patents
Device simulating laser target of small-angle movement Download PDFInfo
- Publication number
- CN101526420B CN101526420B CN2009100481725A CN200910048172A CN101526420B CN 101526420 B CN101526420 B CN 101526420B CN 2009100481725 A CN2009100481725 A CN 2009100481725A CN 200910048172 A CN200910048172 A CN 200910048172A CN 101526420 B CN101526420 B CN 101526420B
- Authority
- CN
- China
- Prior art keywords
- angle
- automatically controlled
- laser
- prism
- universal stage
- 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.)
- Active
Links
Images
Landscapes
- Laser Beam Processing (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The invention discloses a device simulating a laser target of small-angle movement, which comprises an optical part and an electric-control part, wherein the optical part comprises a laser, an energy regulator, a beam enlarger and a prism, and the electric-control part comprises an electric-control rotary table device and a controller and an angle-output device thereof. A light beam sent by the laser is radiated into the beam enlarger by the energy regulator, a radiated light ray is deviated by the central prism of the electric-control rotary table and enters a tested optical-electrical tracking system, and parallel light rays can be controlled to rotate according to a certain deviated angle to simulate a moving target by controlling the electric-control rotary table. The invention has compact structure, simple installation and regulation, low cost and easy calculation of the simulated target position, and can be used for the indoor tests of the aerospace and military small-angle optical-electric tracking systems.
Description
Technical field
The present invention relates to the photoelectric instrument measuring technology, specifically refer to a kind of device of simulating laser target of small-angle movement, it is used for the performance test of indoor low-angle photoelectric follow-up.
Background technology
In the photoelectric tracking technical field, the test of photoelectric follow-up and Performance Evaluation are the important component parts of its development.Often take the motion of certain device simulated target in the space in the photoelectric follow-up indoor test and open tested electro-optical system and finish tracking, the tracking performance of record tracking results assay photoelectric follow-up.Whether the kinetic characteristic of simulated target and optical characteristics have the difficult point that truly becomes test macro again.
Existing target simulation method mainly contains the rotary target device for mark that is used for indoor test electro-optic tracking theodolite performance, and the parallel light tube of employing and swing boom configuration realize that the basic structure synoptic diagram as shown in Figure 1.Generally speaking comprise that parts such as parallel light tube 1, drive motor 4, pivot arm 3, catoptron 2 and support 5 constitute.Parallel light tube 1 outgoing directional light enters system under test (SUT) through catoptron 2.Parallel light tube 1 and reflector apparatus 2 rotate together on the drive motor 4 drive cantilevers 3, make directional light form light cone incident, the motion of simulated target.Jib-length, inclination etc. have determined the angle variation range of simulated target.Generally all more than 15 degree, its jib-length is certain in addition for rotation target semi-cone angle, and little semi-cone angle will cause proving installation to take big space, not be suitable for testing low-angle photoelectric follow-up performance.And owing to optical module in this structure all is positioned at rotation together on the cantilever, the development difficulty is big, cost is high.
Summary of the invention
The purpose of this invention is to provide a kind of target simulator that is used for the performance test of indoor low-angle photoelectric follow-up, solve the problem that the development difficulty is big, cost is high of device existence at present.
Target simulator of the present invention comprises optics and automatically controlled two parts as described in accompanying drawing 2.
Opticator is made up of laser instrument 6, energy conditioner 7, parallel beam expand device 8 and prism 10.
Automatically controlled part is the automatically controlled universal stage 9 that has controller and angle output unit.
Said laser instrument 6 is selected for use and the identical laser instrument of tracked laser eyepiece wave band.
Said energy conditioner 7 is fixed in laser instrument 6 exit portals, and energy conditioner 7 adopts optical attenuator, is used to regulate the outgoing laser energy.
Said parallel beam expand device 8 is fixed in after the energy conditioner 7, and the same straight line in its optical axis and laser instrument light center is placed, and dwindles the width of laser beam divergent angle and expansion of laser light light beam by a certain percentage.
Said automatically controlled universal stage 9 is the universal stage of the central hollow of motor 9-1 and reducing gear formation, and the same straight line of its turning axle and laser instrument parallel beam expand device optical axis is placed.Automatically controlled universal stage is equipped with controller and angle output unit.
Said prism 10 is fixed in automatically controlled universal stage 9 rotation centers for having the round prism of certain drift angle, rotates with automatically controlled universal stage 9.
The principle of work of device of the present invention is as follows:
The light beam that laser instrument 6 sends is incident parallel beam expand device 8 after energy conditioner 7 is regulated, and emergent ray goes out to inject tested photoelectric follow-up through automatically controlled universal stage 9 center prisms 10 deviations.
When prism 10 drift angles are θ, can represent by formula (1) the angle [alpha] of incident directional light deviation:
α＝arcsin(nsinθ)-θ(1)
Wherein n is the refractive index of prism manufacturing materials.
Tested photoelectric follow-up imaging system equivalent schematic comprises optical system and detector system as shown in Figure 5, and system's focal length is f, and detector pixel size is d.Consider one-dimensional case, with the directional light incident optical system of the angled α of primary optical axis, ideally the picture point center should be positioned at upwards n pixel as shown in the figure, and n is represented by formula (2).
Definition three-dimensional system of coordinate xyz, the laser emitting direction is the z direction of principal axis, and the y axle is that vertical each parts are placed the plane upwards, and x axle and above-mentioned diaxon constitute the right-hand rule.
Original state prism vertex angle vergence direction overlaps with the y axle.Automatically controlled universal stage is rotated counterclockwise angle Ω, and prism deviation directional light angle is α, then calculates to get ideally that the picture point center is numbered formula (3) (4) expression at detector position pixel.
As seen the relation between a certain moment tracked system imaging spot center position and the automatically controlled universal stage anglec of rotation, prism vertex angle, system under test (SUT) focal length and the pixel size.For fixing system under test (SUT), f and d are certain, select the prism of certain apex angle, and the variation track of controlling automatically controlled universal stage rotational angle Ω can be extrapolated the movement locus of simulated target imaging center.
If automatically controlled universal stage angular velocity of rotation is ω, then the motion angular velocity of tested photoelectric follow-up target is represented by formula (5), be respectively formula (6) and formula (7) expression in y direction and x direction decomposition rate:
ω′＝sin(α)*ω＝sin(arcsin(nsinθ)-θ)*ω (5)
ω
y′＝sin(α)*ω*sinΩ＝sin(arcsin(nsinθ)-θ)*ω*sinΩ(6)
ω
x′＝sin(α)*ω*cosΩ＝sin(arcsin(nsinθ)-θ)*ω*cosΩ(7)
The concrete steps that laser eyepiece analogue means of the present invention uses are as follows:
1. fixed laser 6, energy conditioner 7, parallel beam expand device 8 and comprise the relative position of the automatically controlled universal stage 9 of prism 10 make each parts optical axis or turning axle on same straight line, and fixing means can adopt support to be spirally connected or glued joint.
2. light path adjustment: open laser instrument 6, static automatically controlled universal stage 9 is in zero-bit, emergent ray behind prism 10 deviations enters tracked system imaging, observe tracked system imaging spot center position, according to the imaging system geometry site relatively incident angle of light and the prism deviation optic angle degree of spot center position correspondence with the adjustment light path.System's adjustment finishes when the imaging geometric relationship is set up.
3. unlatching laser is controlled automatically controlled universal stage 9 operations according to certain speed, the tested tracker entrance pupil of prism 10 emergent light incidents, the kinetic characteristic of the moving target that can simulate according to the imaging system geometric relationship.Open tested tracker trace simulation target, the record tracker tracking results and the automatically controlled universal stage anglec of rotation are used to estimate the tracking performance of system under test (SUT).
The present invention has following beneficial effect:
1. laser eyepiece analogue means of the present invention is simple in structure, with low cost, compact.For the test of low-angle photoelectric follow-up, realize that cost of the present invention significantly reduces with respect to traditional cantilevered rotary target device for mark.
2. target simulator of the present invention, test all is suitable for to the small field of view photoelectric follow-up of different purposes.
Description of drawings
Fig. 1 conventional boom-mounted rotary target device for mark synoptic diagram.
Fig. 2 is a target simulator synoptic diagram of the present invention.
Fig. 3 is prism of the present invention and automatically controlled universal stage scheme of installation.
Fig. 4 is a prism synoptic diagram of the present invention.
Fig. 5 is the imaging geometry synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail:
Laser eyepiece analogue means of the present invention as shown in Figure 2, laser instrument 6, energy conditioner 7, parallel beam expand device 8, prism 10 optical axises and automatically controlled universal stage 9 turning axles are on same straight line.
Automatically controlled universal stage 9 structures are made of motor 9-1, stage body fixed part 9-2 and stage body rotating part 9-3 as shown in Figure 3.Motor 9-1 rotating shaft constitutes drive connection by inner institute's dress gear train of stage body fixed part 9-2 and stage body rotating part 9-3.Stage body rotating part 9-3 inside is hollow, has certain space and is used to install prism.Automatically controlled universal stage angle output unit can be exported the relative angle of stage body rotating part 9-3 with respect to stage body fixed part 9-2.Prism 10 is round prism, and drift angle is certain, and as shown in Figure 4, the prism vertex angle vergence direction is defined as A point direction among the figure.Prism 5 is fixed in the automatically controlled universal stage stage body rotating part 9-3 center hole, can rotate on optical axis together along with rotating part 9-3.
The light beam that laser instrument 6 sends is incident parallel beam expand device 8 after energy conditioner 7 is regulated, and emergent ray transmits through automatically controlled universal stage 9 center prisms 10 and enters tested photoelectric follow-up.The main laser instrument 6 emergent light power of adjusting of energy conditioner 7, the energy conditioner 7 that can select the differential declines multiple to be to obtain the required laser power of simulation system, also avoid the excessive and blinding detector of laser power simultaneously.Select the attenuator multiplying power according to the actual requirements for use.Parallel beam expand device 8 is mainly used in and reduces the laser-beam divergence angle.When the laser emitting laser beam divergence is a Δ, it is m that parallel beam expand device expands the bundle multiple, and then the beam expanding lens shoot laser angle of divergence is Δ/m, and the angle of divergence reduces further to make that emergent light more approaches directional light.Can adopt commercial common beam expanding lens or lens multiplying arrangement.
Automatically controlled universal stage motor is by motor controller controls, can adopt the closed-loop control of servomotor and angular transducer according to precision and rate request, also can adopt the open loop control of stepper motor.
When automatically controlled universal stage stopped the rotation, because the prism angle immobilizes, outgoing beam will be to prism vertex angle deviation in driction certain angle.When automatically controlled universal stage rotated, prism vertex angle pointed to thereupon and changes, and can make the outgoing directional light rotate according to light cone type outgoing rotation sweep according to automatically controlled universal stage.Observe from tested photoelectric follow-up angle, the directional light of this rotation is promptly represented the target of a motion, controls this directional light kinetic characteristic and can obtain different simulated target kinetic characteristics.
In sum, apparatus of the present invention have the characteristics such as simple and compact for structure, that the light path adjustment is easy, use is flexible, with low cost, practical.
Claims (2)
1. device of simulating laser target of small-angle movement, comprising: opticator and automatically controlled part is characterized in that:
Opticator is made up of laser instrument (6), energy conditioner (7), parallel beam expand device (8) and prism (10);
Automatically controlled part is the automatically controlled universal stage (9) that has electric machine controller and angle output unit;
Said laser instrument (6) is selected for use and the identical laser instrument of tracked laser eyepiece wave band;
Said energy conditioner (7) is fixed in laser instrument (6) exit portal, is used to regulate the outgoing laser energy;
Said parallel beam expand device (8) is fixed in energy conditioner (7) afterwards, and the same straight line in its optical axis and laser instrument light center is placed;
Said automatically controlled universal stage (9) is the universal stage of the central hollow of motor and speed reducer structure formation, the same straight line of its turning axle and laser instrument parallel beam expand device optical axis is placed, automatically controlled universal stage (9) is made of motor (9-1), stage body fixed part (9-2) and stage body rotating part (9-3), and automatically controlled universal stage angle output unit output stage body rotating part (9-3) is with respect to the relative angle of stage body fixed part (9-2);
Said prism (10) is fixed in automatically controlled universal stage (9) rotation center for having the round prism of certain drift angle, and rotates together thereupon;
The light beam that laser instrument (6) sends is incident parallel beam expand device (8) after energy conditioner (7) is regulated, and emergent ray goes out to inject tested photoelectric follow-up through automatically controlled universal stage (9) center prism (10) deviation.
2. a kind of device of simulating laser target of small-angle movement according to claim 1 is characterized in that: described energy conditioner (7) is an optical attenuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100481725A CN101526420B (en) | 2009-03-25 | 2009-03-25 | Device simulating laser target of small-angle movement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100481725A CN101526420B (en) | 2009-03-25 | 2009-03-25 | Device simulating laser target of small-angle movement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101526420A CN101526420A (en) | 2009-09-09 |
| CN101526420B true CN101526420B (en) | 2011-04-27 |
Family
ID=41094404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100481725A Active CN101526420B (en) | 2009-03-25 | 2009-03-25 | Device simulating laser target of small-angle movement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101526420B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707082A (en) * | 2012-06-28 | 2012-10-03 | 张荣禄 | Device for measuring angle speed based on single chip and double optical wedges |
| CN106546217B (en) * | 2016-11-03 | 2019-03-05 | 中国科学院长春光学精密机械与物理研究所 | A kind of target apparatus |
| CN108257137A (en) * | 2017-11-27 | 2018-07-06 | 南京浩梁景信息科技有限公司 | A kind of angle measurement method and system of the automatic interpretation of view-based access control model hot spot |
| CN109507110A (en) * | 2018-09-27 | 2019-03-22 | 中国船舶工业系统工程研究院 | A kind of laser detection system warship turntable |
| CN111238409A (en) * | 2020-02-28 | 2020-06-05 | 中国科学院上海技术物理研究所 | Device and method for measuring large-angle optical wedge angle with high precision |
| CN111238408A (en) * | 2020-02-28 | 2020-06-05 | 中国科学院上海技术物理研究所 | Device and method for rapidly measuring parallelism of parallel flat plate |
| CN114966087A (en) * | 2022-05-12 | 2022-08-30 | 中国科学院西安光学精密机械研究所 | Wide-application-range testing device for tracking angular velocity of photoelectric tracking instrument |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512741A (en) * | 1989-12-29 | 1996-04-30 | Thomson-Csf | Target acquisition optoelectronic system with a very wide field |
| FR2739461A1 (en) * | 1984-03-23 | 1997-04-04 | Thomson Csf | Video image collection system for passive IR detection |
| CN2450625Y (en) * | 2000-11-28 | 2001-09-26 | 中国科学院长春光学精密机械与物理研究所 | Moving target using mono-color laser as optic axis |
| CN2534573Y (en) * | 2001-12-12 | 2003-02-05 | 中国科学院长春光学精密机械与物理研究所 | TV tracing dynamic target |
| CN2669181Y (en) * | 2003-11-19 | 2005-01-05 | 中国科学院长春光学精密机械与物理研究所 | Rotay target mark capable of changing analogue object space angle |
| CN101169323A (en) * | 2006-12-14 | 2008-04-30 | 中国科学院长春光学精密机械与物理研究所 | Method for indoor measuring for TV theodolite dynamic angle measurement accuracy using rotary target |
-
2009
- 2009-03-25 CN CN2009100481725A patent/CN101526420B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2739461A1 (en) * | 1984-03-23 | 1997-04-04 | Thomson Csf | Video image collection system for passive IR detection |
| US5512741A (en) * | 1989-12-29 | 1996-04-30 | Thomson-Csf | Target acquisition optoelectronic system with a very wide field |
| CN2450625Y (en) * | 2000-11-28 | 2001-09-26 | 中国科学院长春光学精密机械与物理研究所 | Moving target using mono-color laser as optic axis |
| CN2534573Y (en) * | 2001-12-12 | 2003-02-05 | 中国科学院长春光学精密机械与物理研究所 | TV tracing dynamic target |
| CN2669181Y (en) * | 2003-11-19 | 2005-01-05 | 中国科学院长春光学精密机械与物理研究所 | Rotay target mark capable of changing analogue object space angle |
| CN101169323A (en) * | 2006-12-14 | 2008-04-30 | 中国科学院长春光学精密机械与物理研究所 | Method for indoor measuring for TV theodolite dynamic angle measurement accuracy using rotary target |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101526420A (en) | 2009-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101526420B (en) | Device simulating laser target of small-angle movement | |
| CN102279093B (en) | Infrared dynamic triangular target simulator | |
| CN100555772C (en) | Adopt unsteady cavity automatic cavity-adjusting system and the cavity adjustment method and the application of self-collimation feedback light path | |
| US20230228876A1 (en) | Apparatuses and methods for a rotating optical reflector | |
| CN102023082A (en) | Two-dimensional pointing mirror dynamic performance detection device and detection method | |
| CN101903818B (en) | Mounting position measuring device | |
| CN101650438B (en) | Kilohertz common light path satellite laser ranging (SLR) optical device | |
| CN103631276B (en) | Control method of tracking device based on rotating biprism | |
| CN102393213B (en) | Space-based detection and tracking imaging system testing device and testing method | |
| CN107272015A (en) | High-precision vision guides laser tracking | |
| CN105334028A (en) | Calibration method for improving double-beam synthesis precision and pointing precision by using single detector to synthesize far field | |
| CN110455498B (en) | Performance testing device and method for composite shaft tracking and aiming system | |
| CN103604368A (en) | Dynamic and real-time measuring method in airspace engine assembling process | |
| CN107702644B (en) | Multi-degree-of-freedom measuring device based on double PSDs | |
| CN110186650A (en) | The infrared three mould complex target simulator of visible light of new pattern laser | |
| CN106546217B (en) | A kind of target apparatus | |
| CN107769845A (en) | Star double light path alignment ground validation system | |
| CN110297230B (en) | Satellite-borne laser radar echo signal simulator | |
| CN106526832A (en) | Two-dimensional pointing servo control method and system | |
| CN105469837A (en) | Laser fusion backscattering light beam simulation device | |
| CN104049354A (en) | Method for automatically adjusting coincidence of azimuth axis and emission optical axis of laser communication telescope | |
| CN104567813A (en) | Measuring device for optically scanning an environment | |
| CN102566318B (en) | Light beam transmission stabilizing device | |
| CN109917343A (en) | A kind of target simulation system | |
| CN103345038A (en) | Cube-corner prism vertical optical axis-fixing system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |