CN106556288B - A kind of Pneumatic optical IR imaging target simulation system based on five-axis flight table - Google Patents
A kind of Pneumatic optical IR imaging target simulation system based on five-axis flight table Download PDFInfo
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Abstract
A kind of Pneumatic optical IR imaging target simulation system based on five-axis flight table of the test for the infrared imaging detection guidance system can be used for endoatmosphere high-speed aircraft and Hardware-in-loop Simulation Experimentation field.In order to overcome the shortcomings of existing IR imaging target simulation system to aero-optical effect analog capability, the aero-optical effect loaded on equipment under test is transformed into IR imaging target simulation system according to optical transform principle, only need the method calculated by software, so that it may the Dynamic IR target scene containing aero-optical effect is generated in original IR imaging target simulation system.A kind of Pneumatic optical IR imaging target simulation system analog aero-optical effect based on five-axis flight table is for verifying influence and assessment of the aero-optical effect to infrared imaging detection guidance system performance.
Description
Technical field
The present invention relates to a kind of test of infrared imaging detection guidance system that can be used for endoatmosphere high-speed aircraft with
Hardware-in-loop Simulation Experimentation field is used especially for influence of the verifying aero-optical effect to infrared imaging detection guidance system performance
With the Pneumatic optical IR imaging target simulation system based on five-axis flight table of assessment.
Background technique
Since the aircraft with optical imagery detection guidance system is in endoatmosphere high-speed flight, optical dome and incoming flow
Between form complicated flow field, cause heat, heat radiation and image transmitting to interfere optical imagery detection system, cause target image
Offset, shake, fuzzy, here it is so-called aero-optical effects.
Aero-optical effect is the effect occurred in optical imagery detection guidance system (hereinafter referred to as equipment under test), public
The aero-optical effect generally simulated in equipment under test flight high speed processes on ground known needs to complete in wind-tunnel.This side
The thought of method is that aero-optical effect is loaded directly into be set tested according to hydromechanical similarity principle simulation live flying environment
It is standby upper, since the wind-tunnel effective time is shorter (generally in tens millisecond magnitudes), it is unable to complete tested set again in wind-tunnel
The test of the standby detection guidance performance along trajectory.And for the Performance Evaluation to infrared imaging detection guidance system in laboratory
Semi-matter simulating system is generally used, core is IR imaging target simulation system.
Currently, general IR imaging target simulation system only has to infrared target radiation characteristic, Atmospheric propagating effects
Simulation, without have simulation aero-optical effect ability.This is the high-speed aircraft of infrared imaging detection guidance system
Test or Hardware-in-loop Simulation Experimentation bring difficulty.If carrying out excessive hardware modification to semi-matter simulating system, it will band
Carry out high cost consumption.For this purpose, how under existing HWIL simulation appointed condition, so that assessment aero-optical effect is to height
It is a urgent problem to be solved that the performance of the detection guidance of fast aircraft, which is possibly realized,.
Summary of the invention
In order to overcome the shortcomings of existing IR imaging target simulation system to aero-optical effect analog capability, the present invention is mentioned
A kind of Pneumatic optical IR imaging target simulation system based on five-axis flight table is gone out, for simulating aero-optical effect and can answer
For to infrared acquisition guidance system test and Hardware-in-loop Simulation Experimentation.
The technical solution adopted by the present invention to solve the technical problems is: a kind of Pneumatic optical based on five-axis flight table is infrared
Imageable target simulation system, including two axis target-arms (1) and three axis Flight Simulators (2);The effect of the three axis Flight Simulator (2)
It is the flight attitude of simulated flight device, equipment under test (3) is placed in three axis Flight Simulator (2) inside casings;IR imaging target simulation
Device (4) is placed in two axis target-arms (1), is connected by connecting flange (5) and two axis target-arms (1);Two axis target-arm (1) band
Dynamic IR imaging target simulator (4) complete the simulation of target movement;IR imaging target scene containing aero-optical effect is raw
It is connect by cable (7) with IR imaging target simulator (4) at system (6).
The invention has the advantages that being turned according to optical transform principle by the aero-optical effect on equipment under test is loaded
It changes in IR imaging target simulation system, simplifies test equipment.Furthermore, it is only necessary to the method calculated by software, so that it may
To generate the Dynamic IR target scene containing aero-optical effect in original IR imaging target simulation system.It avoids
To the large-scale hardware modification of HWIL simulation equipment.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the Pneumatic optical IR imaging target simulation system structure principle chart of the invention based on five-axis flight table.
Fig. 2 is the optical imagery shift theory figure of aero-optical effect of the invention.
Specific embodiment
Referring to the attached drawing for showing the embodiment of the present invention, the present invention is described in more detail.However, the present invention can be with
Many different forms are realized, and should not be construed as being limited by the embodiment herein proposed.On the contrary, proposing that these embodiments are
In order to reach abundant and complete disclosure, and those skilled in the art is made to understand the scope of the present invention completely.
In Fig. 1, five-axis flight table is made of two axis target-arms 1 and three axis Flight Simulators 2, the effect of three axis Flight Simulators 2
It is the flight attitude of simulated flight device.Equipment under test 3 is placed in three axis Flight Simulators, 2 inside casing.IR imaging target simulator 4 is set
In in two axis target-arms 1, it is connected by two connecting flanges 5 and two axis target-arms 1.Two axis target-arms 1 drive IR imaging target
Simulator 4 completes the simulation of target movement.IR imaging target scene containing aero-optical effect generates system 6 and passes through cable 7
It is connect with IR imaging target simulator 4.
According to the mechanism of action of Pneumatic optical: the offset of target image that finally equipment under test 3 is caused to receive, shake,
It is fuzzy.Such as pneumatic test, high-speed flow, heat radiation are loaded on equipment under test in any case, finally can be all reflected in tested
On the received image of equipment detector institute, therefore the transforming to outside equipment under test by optical system by this image, it converts here
Onto the Dynamic infrared image converter of IR imaging target simulator.Transformation relation is as shown in Figure 2:, whereinIt is at Dynamic infrared image converter 9 image energy distribution,u’,v’It is the two-dimensional coordinate of the image respectively,tIndicate the time.It is the image energy distribution at equipment under test detector 10,u,vIt is the two-dimensional coordinate of the image respectively.f t It is the focal length of infrared projection system equivalent optical system 11,f d It is equipment under test etc.
Imitate the focal length of optical system 12.τIndicate the energy from 9 conversion process to from Dynamic infrared image converter of equipment under test detector 10
Measure transmitance.In turn, ifIn contain aero-optical effect, with IR imaging target simulator 4 output contain
If meeting above-mentioned inversion between the infrared emanation image of aero-optical effect and the infrared image that then equipment under test 3 receives
Change relationship, it may be assumed that, then the infrared image that equipment under test 3 receives just contains equivalent pneumatic
Optical effect.It is generated in system 6 in the Dynamic IR target scene containing aero-optical effect and different moments is gone out according to ballistic computation
Aero-optical effect target image.IR imaging target simulator is by Dynamic infrared image converter 41 and infrared projection system
System 42 is constituted.The effect of Dynamic infrared image converter 41 is the image for inputting IR imaging target scene generation system 6
Digital signal projects through infrared projection system 42 by the transmitting output Dynamic IR target scene of cable 7, projects to equipment under test
It is received at the entrance pupil 8 of 4 optical systems by equipment under test 3, generates at equipment under test detector containing the infrared of aero-optical effect
Image.Finally, the simulation of aero-optical effect is realized on five-axis flight table and can be applied to the survey to infrared acquisition guidance system
Examination and Hardware-in-loop Simulation Experimentation.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
Claims (2)
1. a kind of Pneumatic optical IR imaging target simulation system based on five-axis flight table, it is characterized in that: including two axis target-arms
(1), three axis Flight Simulators (2), IR imaging target simulator (4) and IR imaging target scene generate system (6);Described three
The effect of axis Flight Simulator (2) is the flight attitude of simulated flight device, and equipment under test (3) is placed in three axis Flight Simulator (2) inside casings
In;IR imaging target simulator (4) is placed in two axis target-arms (1) for generating Infrared Physics radiation, leans on connection method
Blue (5) and two axis target-arms (1) are connected;The two axis target-arm (1) drives IR imaging target simulator (4) to complete target fortune
Dynamic simulation;Dynamic IR imageable target scene containing aero-optical effect generates system (6) and passes through cable (7) and infrared imaging
Target simulator (4) connection, Dynamic IR imageable target scene generate the digital picture that system generates and are transferred to by cable (7)
IR imaging target simulator (4);The IR imaging target simulator (4) is by Dynamic infrared image converter (41) and infrared
Optical projection system (42) is constituted;The effect of the Dynamic infrared image converter (41) is to generate Dynamic IR imageable target scene
The digital signal of the image of system (6) input is by cable (7) transmitting output Dynamic IR target scene, through the infrared projection
System (42) projection is projected at the entrance pupil (8) of equipment under test (3) optical system and is received by equipment under test (3), in equipment under test
The infrared image containing aero-optical effect is generated at detector;
Infrared emanation image and equipment under test containing aero-optical effect are exported with the IR imaging target simulator (4)
Meet transformation relation between the infrared image received:;WhereinIt is Dynamic IR
Image energy distribution at image converter,u’,v’It is the two-dimensional coordinate of the image respectively,tIndicate the time;Be by
Image energy distribution at measurement equipment detector,u,vIt is the two-dimensional coordinate of the image respectively;f t It is the equivalent light of infrared projection system
The focal length of system (11),f d It is the focal length of equipment under test equivalent optical system;τIt indicates from equipment under test detector to dynamic red
The energetic transmittance of conversion process at outer image converter;In turn, ifIn contain aero-optical effect, use is infrared
Infrared emanation image of imageable target simulator (4) output containing aero-optical effect receives red with equipment under test (3)
If meeting inverse transformation relationship between outer image, it may be assumed that, then equipment under test (3) receives red
Outer image just contains equivalent aero-optical effect;System is generated in the Dynamic IR imageable target scene containing aero-optical effect
Go out the target image of the aero-optical effect of different moments in system (6) according to ballistic computation.
2. the Pneumatic optical IR imaging target simulation system according to claim 1 based on five-axis flight table, it is characterized in that:
The IR imaging target simulator (4) is connected by two connecting flanges (5) being arranged symmetrically and two axis target-arms (1).
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CN110108173B (en) * | 2019-05-07 | 2021-06-29 | 四川航天系统工程研究所 | Automatic test system and method for dynamic performance of laser seeker of last-made missile |
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