CN103884357B - Big visual field two waveband dynamic object and interference source analog - Google Patents

Big visual field two waveband dynamic object and interference source analog Download PDF

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Publication number
CN103884357B
CN103884357B CN201410119379.8A CN201410119379A CN103884357B CN 103884357 B CN103884357 B CN 103884357B CN 201410119379 A CN201410119379 A CN 201410119379A CN 103884357 B CN103884357 B CN 103884357B
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China
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dmd
dynamic
interference source
semi
axis
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CN201410119379.8A
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Chinese (zh)
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CN103884357A (en
Inventor
徐亮
赵建科
周艳
杨菲
刘峰
胡丹丹
薛勋
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中国科学院西安光学精密机械研究所
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C25/00Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/497Means for monitoring or calibrating

Abstract

The present invention relates to a kind of big visual field two waveband dynamic object and include uniform source of light, dynamic target generator, control unit and off-axis three reflecting optical systems with interference source analog, this big visual field two waveband dynamic object and interference source analog;Uniform source of light includes the first reflector spotlight and the second reflector spotlight;Dynamic target generator includes a DMD and the 2nd DMD;Oneth DMD and the 2nd DMD is connected with control unit respectively;Oneth DMD and off-axis three reflecting optical systems are successively set on the emitting light path of the first reflector spotlight;2nd DMD and off-axis three reflecting optical systems are successively set on the emitting light path of the second reflector spotlight.The invention provides big visual field two waveband dynamic object and the interference source analog of a kind of simulation that effectively can complete high accuracy, dynamic object and interference source in laboratory.

Description

Big visual field two waveband dynamic object and interference source analog
Technical field
The invention belongs to optical field, relate to a kind of big visual field two waveband dynamic object and interference source analog, Particularly relate to a kind of big visual field two waveband dynamic object being mainly used in laboratory aim scene simulation and interference source Analog.
Background technology
The big visual field of research, two waveband dynamic object and interference source analog, be to test in laboratory at present Card guides product and the key technology of early warning camera.Dynamic object and interference source analog are Aeronautics and Astronautics The key component of space environment simulation test in technology, for testing guiding product and the mesh of early warning camera Mark acquisition performance and the image processing algorithm of data processing software.
The various target simulations that past develops and interference source device, be mainly modeled as main, nothing with static object Method realizes the image information of target and interference source and the real Time Dynamic Simulation of spectral information;And general dynamic mesh Mark analog, target optical spectrum narrow range, the scene simulated are single, and the image resolution ratio of simulator is low, Visual field is little, it is impossible to meets big visual field in wartime, many spectral coverages, multiple target tracking, guiding, early warning system now and surveys The needs of examination.Conventional many spectral coverages target guiding, the checking of early warning system Tracking Recognition ability can only be in outfield Test, therefore, carries out high accuracy, high-resolution, big visual field, two waveband dynamic object and interference source simulation Device, as research topic, has higher practical value.
Summary of the invention
In order to solve great Tian district present in background technology, dynamically, in high precision, many spectral coverages target and interference source The technical barrier of simulation, the invention provides one and can effectively complete in laboratory in high precision, dynamically The big visual field two waveband dynamic object of the simulation of target and interference source and interference source analog.
The technical solution of the present invention is: the invention provides a kind of big visual field two waveband dynamic object with dry Disturbing source analog, it is characterized in that described big visual field two waveband dynamic object and interference source simulation dress Put and include uniform source of light, dynamic target generator, control unit and off-axis three reflecting optical systems;Described all Even light source includes the first reflector spotlight and the second reflector spotlight;Described dynamic target generator bag Include a DMD and the 2nd DMD;A described DMD and the 2nd DMD is connected with control unit respectively; A described DMD and off-axis three reflecting optical systems are successively set on the emitting light path of the first reflector spotlight On;Described 2nd DMD and off-axis three reflecting optical systems are successively set on the outgoing of the second reflector spotlight In light path.
Above-mentioned off-axis three reflecting optical systems include primary mirror, secondary mirror, three mirrors and semi-transparent semi-reflecting lens;Described first DMD, semi-transparent semi-reflecting lens, three mirrors, secondary mirror and primary mirror are successively set on the outgoing of the first reflector spotlight In light path;It is anti-that described 2nd DMD, semi-transparent semi-reflecting lens, three mirrors, secondary mirror and primary mirror are successively set on second Penetrate on the emitting light path of formula spotlight.
Above-mentioned semi-transparent semi-reflecting lens is germanite glass semi-transparent semi-reflecting lens.
The invention have the advantage that
The present invention conducts a research with interference source analogue technique mainly around two waveband dynamic object, completes one Two waveband dynamic object and the design of interference source analog;Which solves high accuracy, big visual field, move State target simulates a difficult problem with interference source, surveys with the quality examination of Target Tracking System, performance on guided missile for satellite Try and produce significant.Two waveband dynamic object involved in the present invention and the simulation of interference source scene Device is mainly used in laboratory aim scene simulation, can simulate the target information of different spectrum scene simultaneously, and Effective simulated target and the characteristics of luminescence of interference source, be used for guiding product and the performance test of early warning camera.
Specifically, the invention have the advantages that
1, the present invention can the situation of change of real-time Simulation different target and scenery, have in real time, dynamic analog Advantage;
2, the present invention utilizes optical field of view splicing, and two pieces of DMD device are carried out image space splicing, prominent Having broken the defect that conventional dynamic scenery simulator simulation field range is little, maximum analog visual field can be extended to about 5 ° (the dynamic goal simulator visual field of specification as before only has 2.5 °);
3, the present invention is according to actual needs, devises the off-axis three trans optical textures in a kind of big visual field, its imaging Quality is close to diffraction limit, and distortion is less than 0.05%, and center of energy is less than 8 with chief ray position deviation ", optics System collimation precision is better than 10 ";It is simultaneously available for target simulation and the emulation of different-waveband, solves in the past Dynamic goal simulator cannot realize a difficult problem for two waveband target simulator;
4, the present invention uses off-axis three transconfigurations can real-time Simulation ultraviolet light, visible ray, infrared band Image information, emulates the feature of different target effectively;
5, the present invention uses double DMD device to carry out target simulator, it is ensured that the light of different target image emergent light The concordance of axle;
6, the present invention use germanite glass as semi-transparent semi-reflecting lens, can simultaneously transmitted infrared light ripple, and reflect visible Light or ultraviolet light, (conventional device is adopted to provide technical support for the real-time analog simulation of different spectral coverage target With reflecting mirror switching mechanism, the emulation of different target spectrum is simulated).
Accompanying drawing explanation
Fig. 1 is big visual field provided by the present invention two waveband dynamic object and the structure of interference source analog is shown It is intended to;
Wherein:
1-uniform source of light;2-dynamic target generator;3-control unit;Off-axis three reflecting optical systems of 4-;5-quilt Survey product;11-the first reflector spotlight;12-the second reflector spotlight;21-the oneth DMD;22-second DMD;41-primary mirror;42-secondary mirror;43-tri-mirror;44-semi-transparent semi-reflecting lens.
Detailed description of the invention
The present invention combines tested guiding product and the structural requirement of early warning camera, ties based on off-axis three reflective learning Structure, it is proposed that a kind of dynamically two waveband target simulator, it is possible to effectively complete in laboratory in high precision, Dynamic object and the simulation of interference source.This two waveband dynamic object and interference source analog utilize double DMD device Part, can realize the simulation of extraterrestrial target and background, and wherein a DMD21 can simulate infrared signature wave band 1, 2nd DMD22 can simulate infrared signature wave band 2, by the synthesis of Bi-objective can be realized after half-reflecting half mirror 44, In the same visual field of test product 5, i.e. produce two kinds of wavelength, real-time simulations of multiple scenery.Big visual field, double wave Section dynamic object is with interference source analog design principle as shown in Figure 1.DMD, Digital Micro mirror Device, digital micromirror elements.
As it is shown in figure 1, when guiding product and the test of early warning camera, by its system optical axis and dynamic object It is adjusted to parallel with interference source analog optical axis, two-way light source and target generator the scenery simulated and target Image, can in test product 5 visual field in image planes become two kinds of spectral information images, now can be used for target source with The real-time simulation of interference source, thus can verify that the Target Recognition Algorithms of test product 5.
Big visual field provided by the present invention two waveband dynamic object and interference source analog specifically include that uniformly Light source 1(the first reflector spotlight 11 and the second reflector spotlight 12), dynamic target generator 2(first DMD21 and the 2nd DMD22), control unit 3, off-axis three reflecting optical system 4(primary mirrors 41;Secondary mirror 42; Three mirrors 43;Semi-transparent semi-reflecting lens 44) composition.
Wherein: a DMD21 and the 2nd DMD22 is connected with control unit respectively;Oneth DMD21 And off-axis three reflecting optical systems are successively set on the emitting light path of the first reflector spotlight 11;Second DMD22 and off-axis three reflecting optical systems are successively set on the emitting light path of the second reflector spotlight 12. Control unit mainly completes the driving of DMD device and controls, and completes the generation of image object.
Off-axis three reflecting optical systems include primary mirror 41, secondary mirror 42, three mirror 43 and semi-transparent semi-reflecting lens 44;First It is reflective poly-that DMD21, semi-transparent semi-reflecting lens 44, three mirror 43, secondary mirror 42 and primary mirror 41 are successively set on first On the emitting light path of light modulation 11;2nd DMD22, semi-transparent semi-reflecting lens 44, three mirror 43, secondary mirror 42 and primary mirror On 41 emitting light paths being successively set on the second reflector spotlight 12.
The operation principle of the present invention is: use uniform source of light 1 to illuminate dynamic target generator 2(wherein first respectively Reflector spotlight 11 and the second reflector spotlight 12 are produced radiant light by the infrared light of two kinds of characteristic wave bands Can), a DMD21 and the 2nd DMD22, after the irradiation of uniform source of light 1, can distinguish reflection modulation two Plant the radiant light of infrared band;Software is generated to two dynamic target generators by the image in control unit 3 2 drive output characteristic image information respectively;Now a DMD21 and the 2nd DMD22 lays respectively at off-axis three The position of focal plane of anti-system, a DMD21 through semi-transparent semi-reflecting lens 44 through off-axis three anti-systems formed from The target emanation of infinite point, the 2nd DMD22 passes through after semi-transparent semi-reflecting lens 44 reflects through off-axis three anti-systems Also the target emanation from infinite point can be formed;Wherein semi-transparent semi-reflecting lens 44 uses germanite glass to make, can Ensure infrared band 2 μm~all band analog simulation of 17 μm;Now from off-axis three anti-system outlets facing to light Learn systematic optical axis direction to look, as radiating from the two waveband of infinite point, multiple target, can realize double Wave band target is simulated with interference source.Wherein, a DMD21 carry out simulated target information, by the 2nd DMD22 Simulate interference source information, now can realize target source and simulate in synchronization, Same Scene with interference source Purpose;Test product 5 is placed on this device exit, adjusts its optical axis and dynamic object and interference source mould Intend device optical axis consistent, the target image of two kinds of spectral informations can be become in test product 5 image planes, effectively exist Simulating target and interference source information in laboratory, the test for test product 5 provides strong condition guarantor Barrier.Can refresh target simulation information in real time it addition, the image in control unit 3 generates software, it refreshes frequency Rate is better than 80Hz, can the real Time Dynamic Simulation of effective simulated target.Wherein the function of each several part is introduced as follows:
Uniform source of light 1 is mainly for providing the luminous energy of simulated target emitter luminescence, the first reflector spotlight 11 With the uniform source of light 1 that the second reflector spotlight 12 is respectively two kinds of wave bands, can effectively simulate different target The characteristics of luminescence.Dynamic target generator 2(the oneth DMD21 and the 2nd DMD22) it is used for providing target characteristic Emulation, control micro mirror upset internal for DMD by driver and realize the conversion of different target and background, Thus realize the simulation of dynamic object;It addition, the effect using two DMD is to realize big visual field optics The optic splice of system image planes and the dynamic simulation of different spectral target.Off-axis three reflecting optical systems 4 are mainly The target of simulation infinite point and background radiation, use this off-axis three trans optical textures can to make optics mesh Mark emulation full spectral simulation from ultraviolet to LONG WAVE INFRARED;It addition, the available field of view of optical system also can increase to 5 ° Above, it is ensured that the big visual field simulation of image object;This system imaging quality, close to diffraction limit, distorts little In 0.05%, center of energy is less than 8 with chief ray position deviation ".

Claims (3)

1. a big visual field two waveband dynamic object and interference source analog, it is characterised in that: described regard greatly Field two waveband dynamic object includes uniform source of light, dynamic target generator, control list with interference source analog First and off-axis three reflecting optical systems;Described uniform source of light includes the first reflector spotlight and the second reflection Formula spotlight;Described dynamic target generator includes a DMD and the 2nd DMD;A described DMD And the 2nd DMD be connected with control unit respectively;A described DMD and off-axis three reflecting optical systems are successively It is arranged on the emitting light path of the first reflector spotlight;Described 2nd DMD and off-axis three reflecting optical systems It is successively set on the emitting light path of the second reflector spotlight.
Big visual field the most according to claim 1 two waveband dynamic object and interference source analog, it is special Levy and be: described off-axis three reflecting optical systems include primary mirror, secondary mirror, three mirrors and semi-transparent semi-reflecting lens;Described Oneth DMD, semi-transparent semi-reflecting lens, three mirrors, secondary mirror and primary mirror are successively set on the first reflector spotlight On emitting light path;Described 2nd DMD, semi-transparent semi-reflecting lens, three mirrors, secondary mirror and primary mirror are successively set on On the emitting light path of two reflector spotlights.
Big visual field the most according to claim 2 two waveband dynamic object and interference source analog, it is special Levy and be: described semi-transparent semi-reflecting lens is germanite glass semi-transparent semi-reflecting lens.
CN201410119379.8A 2014-03-27 2014-03-27 Big visual field two waveband dynamic object and interference source analog CN103884357B (en)

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