Visible light target simulation device for seeker test

Abstract

The invention belongs to the technical field of seeker testing, and particularly relates to a visible light target simulation device. According to the technical scheme, the visible light target simulation device for seeker testing is characterized in that a target generation module is installed on a two-dimensional translation module, and the two-dimensional translation module provides horizontal and longitudinal two-dimensional translation to simulate planar two-dimensional motion of a target; the target generation module is used for generating a visible light target required by seeker testing and changing the size and brightness of the target; and the control module controls the movement of the two-dimensional translation module at the corresponding position and the size and brightness of the target generated by the target simulation module. The device is high in degree of freedom and comprehensive in function, simulates the distance between the seeker and the target by controlling the size and brightness of the target in real time, simulates the moving target by controlling the position of the two-dimensional translation module in real time, and can simulate the relative posture of the target and the seeker in combination with the five-axis turntable. And various function tests and application scene tests of the television seeker can be met.

Description

Technical Field

[0001] The invention belongs to the technical field of seeker testing, and in particular relates to a visible light target simulation device. Background Art

[0002] As an important component of the aircraft, the seeker needs to undergo complete functional testing and verification during the research and development process. The actual flight target shooting test of the aircraft equipped with the seeker requires a lot of time, manpower and material resources, resulting in a large cost expenditure. Therefore, before the seeker is carried out in the target shooting test, it is necessary to conduct sufficient ground experimental tests to promote the progress of product development and save research and development costs. Among them, the most commonly used ground simulation test method is the semi-physical simulation test, that is, the seeker and the target simulation device are installed on a five-axis turntable, and the relative posture of the missile body and the target is simulated by the rotation of the five-axis turntable, so as to verify the seeker target scanning, locking, tracking and other functions. Therefore, the target simulation device is an indispensable and important equipment in the semi-physical simulation test of the seeker.

[0003] Among the current target simulation devices, the more advanced ones mostly use visual technology, which are rich in functions and realistic in scenes, but are expensive to manufacture and use. The lower-cost target simulation devices only have one degree of freedom to simulate the distance between the aircraft and the target, and their application scope is relatively limited, and they cannot meet the needs of certain functional tests of the seeker. Summary of the invention

[0004] The purpose of the present invention is to provide a visible light target simulation device for seeking head function test in view of the deficiencies in the prior art.

[0005] The technical solution of the present invention is: a visible light target simulation device for seeker testing, comprising: a two-dimensional translation module, a target generation module and a control module.

[0006] The target generation module is installed on the two-dimensional translation module, and the two-dimensional translation module provides lateral and longitudinal two-dimensional translation for the target generation module to simulate the planar two-dimensional movement of the target.

[0007] The target generation module is used to generate the visible light target required for the seeker test and change the target size and brightness.

[0008] The control module receives the control instruction of the control computer, controls the movement of the corresponding position of the two-dimensional translation module and the size and brightness of the target generated by the target simulation module.

[0009] In the above scheme, specifically, the two-dimensional translation module includes: a first lead screw displacement device and a second lead screw position device; the second lead screw displacement device is cross-fixed on the displacement platform of the first lead screw displacement device through the back thread; the target generation module is fixed on the displacement platform of the second lead screw device by bolts; a power interface is designed at one end of the first lead screw displacement device.

[0010] In the above scheme, specifically, the target generation module includes: a target generator, a beam splitter prism, a light source, a collimator and an imaging mirror (44) installed in the lens barrel; the target generator generates a target of variable size according to control, and the light of the target and the light source is superimposed through the beam splitter prism, and then passes through the collimator and the imaging mirror in sequence to finally generate a simulated visible light target.

[0011] In the above solution, specifically, the control module is integrated at one end of the second lead screw displacement device and communicates with the control computer via a serial port.

[0012] In the above scheme, specifically, the visible light target simulation device is installed on the azimuth axis of the outer frame of the five-axis turntable, and the television guidance head to be tested is fixed on the rolling axis of the inner frame of the five-axis turntable.

[0013] During the experimental test, the five-axis turntable frame equipped with the target simulation device simulates the relative posture of the seeker and the target according to the turntable drive instructions; the target simulation device controls the horizontal and vertical positions, size and brightness of the generated target in real time by receiving periodic instructions sent by the control computer, simulating the real-time position of the moving target and the size of the target in the seeker imaging as the distance changes. The entire test device and process can complete the process test of this type of seeker capturing, locking, and guiding moving targets.

[0014] Beneficial effects:

[0015] (1) The present invention has a high degree of freedom and comprehensive functions. It can simulate the distance between the seeker and the target by controlling the size and brightness of the target in real time, and simulate the moving target by controlling the position of the two-dimensional translation module in real time. At the same time, it can combine with the five-axis turntable to simulate the relative posture of the target and the seeker, and can meet the various functional tests and application scenario tests of the TV seeker.

[0016] (2) The target size and brightness generated by the target generation module in the present invention are programmable and adjustable, which can realize the simulation of the distance between the seeker and the target.

[0017] (3) The target generation device in the present invention is integrated into the two-dimensional translation module to realize the simulation of arbitrary movement of the target in the plane.

[0018] (4) The control module in the present invention receives instructions from the control computer through the serial port and controls the position and size of the simulated target in real time according to the test requirements.

[0019] (5) The present invention is installed on a five-axis turntable, and combined with the turntable, it can realize all-round simulation of target position, projectile-target distance, and projectile-target relative posture with a high degree of freedom. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A top view of the present invention;

[0021] Figure 2 is a side view of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the target generation module in the present invention;

[0023] In the figure: 1-power supply interface; 2-first lead screw displacement device; 3-control module; 4-target generation module; 41-target generator; 42-light source; 43-collimator; 44-imaging mirror; 45-lens barrel; 46-beam splitter prism; 5-second lead screw displacement device. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Embodiment 1:

[0026] See attached Figure 1 , 2 A visible light target simulation device for seeker testing includes: a two-dimensional translation module, a target generation module 4 and a control module 3.

[0027] The function of the two-dimensional translation module is to provide lateral and longitudinal two-dimensional translation for the target generation module 4, simulating the planar two-dimensional motion of the target. The two-dimensional translation module is composed of two lead screw displacement devices, which drive the lead screws to rotate through motors, thereby driving the displacement platform on the lead screws to perform linear motion. The second lead screw displacement device 5 is cross-fixed on the displacement platform of the first lead screw displacement device 2 through the back thread, so that it can move laterally with the displacement platform of the first lead screw displacement device 2, and at the same time, the displacement platform on the second lead screw displacement device 5 can move longitudinally, and threaded holes are designed on it.

[0028] The target generation module 4 is used to generate the visible light target required for the seeker test and change the target size and brightness. Figure 3As shown, it includes: a target generator 41, a beam splitter prism 46, a light source 42, a collimator 43 and an imaging mirror 44 installed in a lens barrel 45; the target generator 41 generates a target of variable size according to program control, and the light of the target and the light source 42 is superimposed through the beam splitter prism 46, and then passes through the collimator 43 and the imaging mirror 44 in sequence to finally generate a simulated visible light target. The target simulation module 4 is fixed to the displacement platform of the second lead screw device 5 by bolts, so as to achieve lateral and longitudinal two-dimensional movement following the displacement platform.

[0029] The function of the control module 3 is to control the position of the two-dimensional translation module, the target size and brightness of the target generation module 4 in real time. The control module 3 is integrated at one end of the second lead screw displacement device 5, communicates with the control computer through the serial port, and receives the control instructions of the control computer to control the movement of the corresponding position of the two-dimensional translation module and the size and brightness of the target of the target simulation module 4.

[0030] One end of the first lead screw displacement device 2 is designed with a power interface to realize power supply for the entire system device.

[0031] The visible light target simulation device is installed through the threaded hole on the back of the first lead screw displacement device 2, fixed on the azimuth axis of the outer frame of the five-axis turntable, the power interface 1 is connected to the power supply for power supply, and the control module 3 is connected to the control computer. A certain type of TV guidance head to be tested is fixed on the roll axis of the inner frame of the five-axis turntable.

[0032] In this example, a ground test was conducted on a certain type of aircraft seeker, which is a TV-guided seeker. During the experimental test, the five-axis turntable frame equipped with a visible light target simulation device simulated the relative posture of the seeker and the target according to the turntable drive instructions; the target simulation device controlled the horizontal and vertical positions, size and brightness of the generated target in real time by receiving periodic instructions sent by the control computer, simulating the real-time position of the moving target and the size of the target in the seeker imaging as the distance changes. The entire test device and process can complete the process test of this type of seeker capturing, locking, and guiding moving targets.

[0033] Embodiment 2:

[0034] The visible light target simulation device provided in Example 1 is used for a certain type of reconnaissance drone TV seeker. The application scenario of this type of seeker is that the drone flies to a certain airspace to scan and reconnaissance a certain ground area, and transmits the scanned image back and splices it to generate a complete ground image. In this example, the method of using the target simulation device is the same as that of the first embodiment. The difference is that the target simulation device changes the position of the target generation module in real time, so as to achieve the purpose of simulating multiple targets by having a target appear at different positions at different times, so that multiple target positions appear in the image scanned and spliced ​​by the seeker, and this is used to verify the scanning capability of the test seeker and the accuracy of the image splicing technology.

[0035] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A visible light target simulation device for seeker testing, characterized in that: include: A two-dimensional translation module, a target generation module (4) and a control module (3); The target generation module (4) is installed on the two-dimensional translation module, and the two-dimensional translation module provides the target generation module (4) with lateral and longitudinal two-dimensional translation to simulate the planar two-dimensional movement of the target; The target generation module (4) is used to generate a visible light target required for the seeker test and to change the size and brightness of the target; The control module (3) receives control instructions from a control computer, controls the movement of the corresponding position of the two-dimensional translation module, and controls the size and brightness of the target generated by the target simulation module (4).

2. A visible light target simulation device for seeker testing as claimed in claim 1, characterized in that: The two-dimensional translation module comprises: a first lead screw displacement device (2) and a second lead screw position device (5); the second lead screw displacement device (5) is cross-fixed on a displacement platform of the first lead screw displacement device (2) through a back thread; the target generation module (4) is fixed on the displacement platform of the second lead screw device (5) through bolts; and a power supply interface (1) is designed at one end of the first lead screw displacement device (2).

3. A visible light target simulation device for seeker testing as claimed in claim 1 or 2, characterized in that: The target generation module (4) comprises: a target generator (41), a beam splitter prism (46), a light source (42), a collimator (43) and an imaging mirror (44) installed in a lens barrel (45); the target generator (41) generates a target of variable size according to control, and after the light of the target and the light source (42) is superimposed through the beam splitter prism (46), it passes through the collimator (43) and the imaging mirror (44) in sequence to finally generate a simulated visible light target.

4. A visible light target simulation device for seeker testing as claimed in claim 1 or 2, characterized in that: The control module (3) is integrated at one end of the second lead screw displacement device (5) and communicates with the control computer via a serial port.

5. A visible light target simulation device for seeker testing as claimed in claim 1 or 2, characterized in that: The visible light target simulation device is installed on the azimuth axis of the outer frame of the five-axis turntable, and the television guidance head to be tested is fixed on the rolling axis of the inner frame of the five-axis turntable.

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