CN104344766A - Semi-physical simulation infrared point source/imaging compound target calibration device and calibration method - Google Patents

Semi-physical simulation infrared point source/imaging compound target calibration device and calibration method Download PDF

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CN104344766A
CN104344766A CN201310322289.4A CN201310322289A CN104344766A CN 104344766 A CN104344766 A CN 104344766A CN 201310322289 A CN201310322289 A CN 201310322289A CN 104344766 A CN104344766 A CN 104344766A
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calibration
infrared
target
imaging
point source
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CN104344766B (en
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张励
李卓
杨扬
李艳红
李奇
陆志沣
张琰
赵海生
赵吕懿
张佳君
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Beijing Institute of Technology BIT
Shanghai Institute of Electromechanical Engineering
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Beijing Institute of Technology BIT
Shanghai Institute of Electromechanical Engineering
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Abstract

The invention discloses a semi-physical simulation infrared point source/imaging compound target calibration device which comprises an infrared focal plane detector, a calibration tool and an infrared imaging lens, the infrared focal plane detector and the infrared imaging lens are fixed on the calibration tool, all parts are positioned on the same axis by machining precision, the calibration device is mounted on a turntable and connected with a control computer through a cable, and a target simulator is calibrated. When a calibration method is used, the infrared focal plane detector and the infrared imaging lens are fixed on the calibration tool to form the calibration device, the calibration device is mounted on the turntable through a fixture, the turntable can rotate by 360 degrees, the calibration device is self-calibrated, a corresponding calibration method is used for calibration according to a calibrated target, the lapse state of the target simulator can be changed by calibration, precision of the target simulator is improved, errors are quantized, and corresponding theoretical basis is provided for evaluation of confidence coefficient of the compound target simulator and a whole simulation system.

Description

HWIL simulation IR point source/imaging complex target calibrating installation and calibration steps
Technical field
The present invention relates to demarcation and the collimation technique field of weaponry testing equipment, be specifically related to a kind of IR point source for guidance control system semi-matter simulating system testing equipment/imaging complex target calibrating installation and calibration steps.
Background technology
Present stage missile guidance technology development, the infrared guidance guided missile of original scanning system develops into infrared imaging guidance pattern gradually.For checking guidance control system performance, infrared imaging guidance semi-true object emulation technology is also thereupon fast-developing.
Part the most key in infrared imaging guidance semi-matter simulating system is IR imaging target simulation system, and this goal systems, in order to meet the needs of guidance system test, can simulate IR point source target and IR imaging target simultaneously.For ensureing target simulation system performance index, needing regularly to calibrate it, therefore needing a kind of complex target calibrating installation and the calibration steps that can calibrate IR point source target and IR imaging target.
Summary of the invention
Problem to be solved by this invention is that providing a kind of carries out calibrating installation and calibration steps to IR point source/imaging complex target simulation system.First require that calibrating installation possesses IR point source and the/single mode of imageable target or bimodulus compound rated capacity, need in addition for calibrating installation and the concrete calibration steps of target simulation system.
The present invention, for solving its technical problem, first proposes a kind of HWIL simulation IR point source/imaging complex target calibrating installation, comprises infrared focal plane detector, calibration tool, infrared imaging camera lens; Infrared focal plane detector and infrared imaging camera lens are fixed on calibration tool, ensure each parts on the same axis by machining accuracy; Described calibrating installation is arranged on turntable, is connected with computer for controlling by cable, completes the calibration to target simulator.
Another aspect of the present invention is to propose a kind of HWIL simulation IR point source/imaging complex target calibration steps, the method step comprises: 1) be fixed on calibration tool by infrared focal plane detector and infrared imaging camera lens, composition calibrating installation, calibrating installation is arranged on turntable by fixture, and turntable can realize 360 ° of rotations; 2) self calibration of calibrating installation is completed; 3) corresponding calibration steps is adopted to calibrate according to the pattern being calibrated target.
Further, for calibration directional light, first calibrating installation is focused to infinity, then it is driven to rotate by turntable, the image that in rotary course, infrared focal plane detector exports together rotates with turntable, the non-rotary point of existence anduniquess in whole visual field, this point is the datum mark of calibrating installation, namely completes the self calibration of calibrating installation after marking this point.
Further, during Point Target calibration, the infrared target of reception is converted to image by the infrared focal plane detector in calibrating installation, by observing the picture element of image definition calibration IR point source target; Make it overlap with calibrating installation datum mark by adjustment IR point source target, reach the object of optical axis calibrator; The signal of telecommunication that infrared focal plane detector exports and infrared radiation angle value have corresponding relation, are calibrated the energy size of IR point source target by the signal of telecommunication obtained.
Further, during imageable target calibration, the infrared target of reception is converted to image by the infrared focal plane detector in calibrating installation, by observing the picture element of image definition calibration IR imaging target, the position of adjustment imageable target makes it be in datum, now complete the calibration of imageable target optical axis, the signal of telecommunication that infrared focal plane detector exports and infrared radiation angle value have corresponding relation, the energy value of IR imaging target is calibrated by the signal of telecommunication obtained, adjustment IR imaging target energy uniformity, the value of electrical signals that each pixel of detector is exported is identical, complete the nonuniformity calibration of IR imaging target.
Can change target simulator self by calibration to lapse state, its precision is improved, and error is quantized, and provides corresponding theoretical foundation to the assessment of complex target simulator and whole analogue system confidence level.
accompanying drawing explanation
Fig. 1 is HWIL simulation IR point source/imaging complex target calibrating installation principle schematic;
Fig. 2 is HWIL simulation IR point source/imaging complex target calibration steps block diagram.
Detailed description of the invention
Be HWIL simulation IR point source/imaging complex target calibrating installation principle schematic as shown in Figure 1, in figure, infrared focal plane detector 4, calibration tool 5, infrared imaging camera lens 6 form calibrating installation jointly.Calibrating installation is connected with computer for controlling 1 by cable 2, and computer for controlling 1 completes the Control & data acquisition to calibrating installation, and during calibration, calibrating installation is arranged on turntable 3, completes the calibration to point source/imaging complex target simulator 7 by use calibration steps.
As shown in Figure 2, its specific implementation process is as follows for the HWIL simulation IR point source/imaging complex target calibration steps step of the present embodiment:
1) be fixed on calibration tool by infrared focal plane detector and infrared imaging camera lens, composition calibrating installation, calibrating installation is arranged on turntable by fixture, and turntable can realize 360 ° of rotations.
2) self calibration of calibrating installation is completed.For calibration directional light, first calibrating installation is focused to infinity, then it is driven to rotate by turntable, the image that in rotary course, infrared focal plane detector exports together rotates with turntable, the non-rotary point of existence anduniquess in whole visual field, this point is the datum mark of calibrating installation, namely completes the self calibration of calibrating installation after marking this point.
3) corresponding calibration steps is adopted to calibrate according to the pattern (Point Target or imageable target) being calibrated target;
During Point Target calibration, the infrared target of reception is converted to image by the infrared focal plane detector in calibrating installation, by observing the picture element of image definition calibration IR point source target.Make it overlap with calibrating installation datum mark by adjustment IR point source target, reach the object of optical axis calibrator.The signal of telecommunication that infrared focal plane detector exports and infrared radiation angle value have corresponding relation, are calibrated the energy size of IR point source target by the signal of telecommunication obtained;
During imageable target calibration, the infrared target of reception is converted to image by the infrared focal plane detector in calibrating installation, by observing the picture element of image definition calibration IR imaging target.The position of adjustment imageable target makes it be in datum, now completes the calibration of imageable target optical axis.The signal of telecommunication that infrared focal plane detector exports and infrared radiation angle value have corresponding relation, are calibrated the energy value of IR imaging target by the signal of telecommunication obtained.Adjustment IR imaging target energy uniformity, the value of electrical signals that each pixel of detector is exported is identical, completes the nonuniformity calibration of IR imaging target.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.

Claims (5)

1.一种半实物仿真红外点源/成像复合目标校准装置，其特征在于，包括红外焦平面探测器、校准工装、红外成像镜头； 1. A hardware-in-the-loop simulation infrared point source/imaging composite target calibration device is characterized in that it includes an infrared focal plane detector, calibration tooling, and an infrared imaging lens; 所述红外焦平面探测器和红外成像镜头固定在校准工装上，通过机械加工精度保证各部件在同一轴线上；所述校准装置安装在转台上，通过电缆与控制计算机连接，完成对目标模拟器的校准。 The infrared focal plane detector and the infrared imaging lens are fixed on the calibration tool, and the machining accuracy is used to ensure that the components are on the same axis; the calibration device is installed on the turntable, connected to the control computer through a cable, and the target simulator calibration. 2.一种半实物仿真红外点源/成像复合目标校准方法，其特征在于，该方法步骤包括： 2. A kind of hardware-in-the-loop simulation infrared point source/imaging composite target calibration method, it is characterized in that, the method step comprises: 1）将红外焦平面探测器和红外成像镜头固定在校准工装上，组成校准装置，校准装置通过夹具安装在转台上，转台可实现360°旋转； 1) Fix the infrared focal plane detector and infrared imaging lens on the calibration tool to form a calibration device. The calibration device is installed on the turntable through a fixture, and the turntable can rotate 360°; 2）完成校准装置的自校准； 2) Complete the self-calibration of the calibration device; 3）根据被校准目标的模式采用相应的校准方法进行校准。 3) Use the corresponding calibration method to calibrate according to the mode of the calibrated target. 3.根据权利要求2所述的半实物仿真红外点源/成像复合目标校准方法，其特征在于，为校准平行光，首先将校准装置调焦至无限远，然后由转台带动其进行旋转，旋转过程中红外焦平面探测器输出的图像随转台一同旋转，在整个视场中存在唯一不旋转的点，该点即为校准装置的基准点，标记此点后即完成校准装置的自校准。 3. The hardware-in-the-loop simulation infrared point source/imaging composite target calibration method according to claim 2 is characterized in that, for calibrating parallel light, first the calibration device is focused to infinity, and then driven by the turntable to rotate, rotate During the process, the image output by the infrared focal plane detector rotates with the turntable, and there is only one non-rotating point in the entire field of view, which is the reference point of the calibration device. After marking this point, the self-calibration of the calibration device is completed. 4.根据权利要求2所述的半实物仿真红外点源/成像复合目标校准方法，其特征在于，点源目标校准时，校准装置中的红外焦平面探测器将接收的红外目标转换为图像，通过观察图像清晰度校准红外点源目标的像质；通过调整红外点源目标使其与校准装置基准点重合，达到光轴校准的目的；红外焦平面探测器输出的电信号与红外辐照度值具有对应关系，通过得到的电信号校准红外点源目标的能量大小。 4. semi-physical simulation infrared point source/imaging composite target calibration method according to claim 2, is characterized in that, during point source target calibration, the infrared focal plane detector in the calibration device converts the infrared target received into image, Calibrate the image quality of the infrared point source target by observing the image clarity; adjust the infrared point source target to coincide with the reference point of the calibration device to achieve the purpose of optical axis calibration; the electrical signal output by the infrared focal plane detector and the infrared irradiance The values have a corresponding relationship, and the energy level of the infrared point source target is calibrated through the obtained electrical signal. 5.根据权利要求2所述的半实物仿真红外点源/成像复合目标校准方法，其特征在于，成像目标校准时，校准装置中的红外焦平面探测器将接收的红外目标转换为图像，通过观察图像清晰度校准红外成像目标的像质，调整成像目标的位置使其处于基准点处，此时完成成像目标光轴的校准，红外焦平面探测器输出的电信号与红外辐照度值具有对应关系，通过得到的电信号校准红外成像目标的能量值，调整红外成像目标能量均匀性，使探测器每个像素点输出的电信号值相同，完成红外成像目标的非均匀性校准。 5. semi-physical simulation infrared point source/imaging composite target calibration method according to claim 2, is characterized in that, when imaging target calibration, the infrared focal plane detector in the calibration device converts the infrared target received into image, by Observe the image clarity to calibrate the image quality of the infrared imaging target, adjust the position of the imaging target so that it is at the reference point, and then complete the calibration of the optical axis of the imaging target, and the electrical signal output by the infrared focal plane detector has the same relationship with the infrared irradiance value According to the corresponding relationship, the energy value of the infrared imaging target is calibrated by the obtained electrical signal, and the energy uniformity of the infrared imaging target is adjusted so that the electrical signal value output by each pixel of the detector is the same, and the non-uniformity calibration of the infrared imaging target is completed.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105423823A (en) * 2015-10-29 2016-03-23 中国科学院长春光学精密机械与物理研究所 Injection-type semi-physical simulation system for laser-guided missile
CN106249315A (en) * 2016-08-10 2016-12-21 上海机电工程研究所 The calibration steps of semi-matter simulating system multi-source target simulator pointing accuracy
CN106839877A (en) * 2015-12-07 2017-06-13 上海机电工程研究所 A kind of error compensating method of optics multiband complex target simulation system
CN109163609A (en) * 2018-08-13 2019-01-08 上海机电工程研究所 Radio frequency/optics Shared aperture complex target simulation system calibration method and system

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EP0269843A2 (en) * 1986-10-31 1988-06-08 DIEHL GMBH & CO. Checking device, especially for the homing head of intelligent guided ammunition
EP0327072A2 (en) * 1988-02-04 1989-08-09 The Boeing Company Boresight alignment measuring apparatus and method for electro-optic systems
CN2077121U (en) * 1990-10-25 1991-05-15 大同铁路分局大同车辆段 Detecting point prover of infrared search unit
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105423823A (en) * 2015-10-29 2016-03-23 中国科学院长春光学精密机械与物理研究所 Injection-type semi-physical simulation system for laser-guided missile
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CN106249315A (en) * 2016-08-10 2016-12-21 上海机电工程研究所 The calibration steps of semi-matter simulating system multi-source target simulator pointing accuracy
CN109163609A (en) * 2018-08-13 2019-01-08 上海机电工程研究所 Radio frequency/optics Shared aperture complex target simulation system calibration method and system

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