An infrared target simulation device based on a medium wave laser

Abstract

The utility model relates to an infrared target simulation device based on middle wave laser belongs to airborne photoelectric countermeasure field, include: middle wave infrared laser ware, is used for the outward radiation middle wave infrared laser, infrared imaging device is used for imaging and detection to moving target, two -dimensional motion turntable, including be used for synchronous control the elevation motor of middle wave infrared laser ware, infrared imaging device elevation angle and be used for synchronous control the azimuth motor of its azimuth angle, control computer, mobile bearing platform is used for bearing and transportation middle wave infrared laser ware, infrared imaging device, two -dimensional motion turntable and control computer, wherein, middle wave infrared laser ware and infrared imaging device are installed on the mounting surface of two -dimensional motion turntable side by side, and the optical axis of middle wave infrared laser ware is adjustable in the elevation / azimuth direction. The device is simple to operate, can quickly capture the moving target such as aircraft, is convenient for moving and carrying.

Description

Technical Field

[0001] This utility model belongs to the field of airborne optoelectronic countermeasures, specifically relating to an infrared target simulation device based on a mid-wave laser. Background Technology

[0002] In the field of airborne optoelectronic countermeasures, the functional performance verification of optoelectronic detection and warning equipment typically requires an infrared target simulation device as a ground-based testing equipment. Existing infrared target simulation devices are mainly divided into two categories: laser-based and blackbody-based, and they present the following problems: 1. The lack of tracking devices or the small field of view of the tracking devices makes it difficult to quickly capture moving targets such as aircraft; 2. Blackbody simulation devices are bulky and inconvenient to carry and deploy; 3. The laser-type simulation device and the tracking device are strongly coupled, the operation method is complex, the system has high precision, and the stability of use is poor.

[0003] Therefore, this invention provides an infrared target simulation device based on a mid-wave laser. Summary of the Invention

[0004] The technical problem to be solved: To avoid the shortcomings of existing technologies, this utility model provides an infrared target simulation device based on a mid-wave laser. According to the radiation characteristics of low-altitude high-speed infrared targets, the laser and the tracking device are separated and fixed on a vehicle-mounted two-dimensional turntable. The structure is simple and easy to move and carry.

[0005] The technical solution of this utility model is: an infrared target simulation device based on a mid-wave laser, comprising: Mid-wave infrared laser 1, used to radiate mid-wave infrared laser outwards; Infrared imaging device 2, used for imaging and detecting moving targets; The two-dimensional motion turntable includes a pitch motor 3 for synchronously controlling the pitch angle of the mid-wave infrared laser 1 and the infrared imaging device 2, and an azimuth motor 4 for synchronously controlling their azimuth angle. The control computer 6 is communicatively connected to the mid-wave infrared laser 1, the infrared imaging device 2, the pitch motor 3, and the azimuth motor 4, respectively. A mobile carrier platform is used to carry and transport the mid-wave infrared laser 1, the infrared imaging device 2, the two-dimensional motion turntable, and the control computer 6. The mid-wave infrared laser 1 and the infrared imaging device 2 are mounted side by side on the mounting surface of the two-dimensional motion turntable, and the optical axis of the mid-wave infrared laser 1 is adjustable in the pitch / azimuth direction. A further technical solution of this utility model is: the mobile support platform is a vehicle, and the two-dimensional motion turntable is fixedly installed on the vehicle.

[0006] A further technical solution of this utility model is: the mid-wave infrared laser 1 includes a power drive component 8, a laser component 9, and an optical frequency conversion component 10. The laser component 9 is used to generate pump light in the 1.9μm band, and the optical frequency conversion component 10 is used to convert the wavelength of the pump light to the 3μm-5μm mid-wave infrared band and output it; the power drive component 8 is used to receive external power to supply power to the laser component 9 and the optical frequency conversion component 10.

[0007] A further technical solution of this utility model is: the infrared imaging device 2 includes an optical component, a detector component, and an image processing component. The optical component is used to receive energy radiation in the mid-wave infrared band; the detector component is used to convert the light signal detected by the optical component into an electrical signal and transmit it to the image component for image processing; the image component is used to process the received image and detect and track the target.

[0008] A further technical solution of this utility model is: the infrared imaging device 2 is required to have an imaging field of view greater than 90° and an imaging distance of not less than 15km.

[0009] A further technical solution of this utility model is: the optical axes of the mid-wave infrared laser 1 and the infrared imaging device 2 are parallel. By adjusting the azimuth and pitch of the optical axis of the mid-wave infrared laser 1, the laser spot emitted by it coincides with the center of the field of view of the infrared imaging device 2 and the preset far-distance reference point. A further technical solution of this utility model is: it also includes a control handle 7, which is communicatively connected to the control computer 6 and is used to manually generate control commands to control the rotation of the pitch motor 3 and the azimuth motor 4. A further technical solution of this utility model is: the infrared imaging device 2, the pitch motor 3, the azimuth motor 4, and the control handle 7 are interconnected with the control computer 6 via a bus to form a moving target tracking system; the control computer 6 is configured to receive instructions from the control handle 7 for manual tracking, or to receive the moving target pixel offset detected by the infrared imaging device 2 and convert it into motor control instructions.

[0010] A further technical solution of this utility model is: it also includes a power supply 5, which supplies power to the mid-wave infrared laser 1, the infrared imaging device 2, the pitch motor 3 and the azimuth motor 4.

[0011] Beneficial effects The beneficial effects of this utility model are as follows: The infrared target simulation device based on a mid-wave laser provided by this utility model achieves the following significant beneficial effects by integrating a mid-wave infrared laser, an infrared imaging device, a two-dimensional motion turntable, and a control computer into a mobile carrier platform: 1. This utility model overcomes the shortcomings of traditional blackbody simulation devices, such as being bulky and difficult to deploy in the field, by integrating the entire system onto a mobile platform such as a vehicle. At the same time, because it uses laser as the radiation source, its inherent characteristics of good directivity and concentrated energy are retained, allowing the device to be quickly deployed and immediately put into high-precision simulation testing after being moved to any test site, eliminating the cumbersome preparation process required by traditional fixed or complex hoisting systems.

[0012] 2. The optical axis of this mid-wave infrared laser is adjustable in both azimuth and pitch, ensuring long-term parallel stability between the laser emission axis and the imaging tracking axis. Furthermore, the control handle in the system provides an interface for manual intervention by the operator. The entire device has a compact structure, clearly defined connections between components, and good overall rigidity, making it suitable for stable operation in complex outdoor vibration environments. Attached Figure Description

[0013] Figure 1 A schematic diagram of the infrared target simulation device in an embodiment of this utility model; Figure 2 A schematic diagram of a mid-wave infrared laser in an embodiment of this utility model.

[0014] Explanation of reference numerals in the attached figures: 1. Mid-wave infrared laser, 2. Infrared imaging device, 3. Pitch motor, 4. Azimuth motor, 5. Power supply, 6. Control computer, 7. Control handle, 8. Power drive component, 9. Laser component, 10. Optical frequency conversion component. Detailed Implementation

[0015] The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0017] Based on the problems existing in the prior art, this utility model proposes an infrared target simulation device based on a mid-wave laser, comprising: Mid-wave infrared laser 1, used to radiate mid-wave infrared laser outwards; Infrared imaging device 2, used for imaging and detecting moving targets; The two-dimensional motion turntable includes a pitch motor 3 for synchronously controlling the pitch angle of the mid-wave infrared laser 1 and the infrared imaging device 2, and an azimuth motor 4 for synchronously controlling their azimuth angle. The control computer 6 is communicatively connected to the mid-wave infrared laser 1, the infrared imaging device 2, the pitch motor 3, and the azimuth motor 4, respectively. A mobile carrier platform is used to carry and transport the mid-wave infrared laser 1, the infrared imaging device 2, the two-dimensional motion turntable, and the control computer 6. The mid-wave infrared laser 1 and the infrared imaging device 2 are mounted side by side on the mounting surface of the two-dimensional motion turntable, and the optical axis of the mid-wave infrared laser 1 is adjustable in the pitch / azimuth direction. Preferably, the mobile support platform is a vehicle, and the two-dimensional motion turntable is fixedly installed on the vehicle.

[0018] Preferably, the mid-wave infrared laser 1 includes a power drive component 8, a laser component 9, and an optical frequency conversion component 10. The laser component 9 is used to generate pump light in the 1.9μm band, and the optical frequency conversion component 10 is used to convert the wavelength of the pump light to the 3μm-5μm mid-wave infrared band and output it. The power drive component 8 is used to receive external power to supply power to the laser component 9 and the optical frequency conversion component 10.

[0019] Preferably, the infrared imaging device 2 includes an optical component, a detector component, and an image processing component. The optical component is used to receive energy radiation in the mid-wave infrared band; the detector component is used to convert the light signal detected by the optical component into an electrical signal and transmit it to the image component for image processing; the image component is used to process the received image and detect and track the target.

[0020] Preferably, the infrared imaging device 2 requires an imaging field of view greater than 90° and an imaging distance of not less than 15km.

[0021] Preferably, the optical axes of the mid-wave infrared laser 1 and the infrared imaging device 2 are parallel. By adjusting the azimuth and pitch of the optical axis of the mid-wave infrared laser 1, the laser spot emitted by it coincides with the center of the field of view of the infrared imaging device 2 and a preset far-distance reference point. Preferably, it also includes a control handle 7, which is communicatively connected to the control computer 6 and is used to manually generate control commands to control the rotation of the pitch motor 3 and the azimuth motor 4. Preferably, the infrared imaging device 2, the pitch motor 3, the azimuth motor 4, and the control handle 7 are interconnected with the control computer 6 via a bus to form a moving target tracking system; the control computer 6 is configured to receive instructions from the control handle 7 for manual tracking, or to receive the moving target pixel offset detected by the infrared imaging device 2 and convert it into motor control instructions.

[0022] Preferably, it also includes a power supply 5, which supplies power to the mid-wave infrared laser 1, the infrared imaging device 2, the pitch motor 3, and the azimuth motor 4.

[0023] This invention can track moving targets such as aircraft and simulate the radiation characteristics of low-altitude, high-speed infrared targets, and is used for the functional performance verification of airborne photoelectric detection and alarm equipment.

[0024] The above technical solution will be further explained below with reference to the accompanying drawings: In one embodiment, refer to Figure 1 As shown, in this embodiment, an infrared target simulation device based on a mid-wave laser includes: Mid-wave infrared laser 1 is used to receive instructions from control computer 6 and radiate mid-wave infrared laser to simulate the characteristics of portable low-altitude high-speed infrared targets. Infrared imaging device 2 is used to display infrared images, detect moving targets, and feed back the control values ​​of azimuth motor 4 and pitch motor 3 to control computer 6. Pitch motor 3 is used to control the pitch angle of infrared imaging device 2 to track moving targets; The azimuth motor 4 is used to control the azimuth angle of the infrared imaging device 2 to track moving targets; Power supply 5 is used to provide power input to mid-wave infrared laser 1, infrared imaging device 2, pitch motor 3 and azimuth motor 4; The control computer 6 is used to control the pitch motor 3 and azimuth motor 4 to rotate, thereby driving the infrared imaging device 2 to track the moving target; it is also used to generate laser codes to control the mid-wave infrared laser 1 to radiate laser light. The control handle 7 is used to generate the turning angles of the pitch motor 3 and the azimuth motor 4 and send them to the control computer 6.

[0025] In one embodiment, the pitch motor 3 and the azimuth motor 4 constitute a two-dimensional turntable, which is fixed on the vehicle for easy movement. The mid-wave infrared laser 1 and the infrared imaging device 2 are mounted side by side on the mounting surface of the two-dimensional turntable. By adjusting the pitch and azimuth of the mid-wave infrared laser 1, it is aligned with the optical axis of the infrared imaging device 2.

[0026] In one embodiment, the control computer 6 includes an image display interface, motion tracking system software, and laser control software. The image display interface is used to display the field of view of the infrared imaging device 2; the motion tracking system software is used for closed-loop automatic control of the pitch motor 3 and azimuth motor 4 to rotate, thereby driving the infrared imaging device 2 to track the moving target; the laser control software is used to generate laser codes to control the radiation of the mid-wave infrared laser 1.

[0027] In one embodiment, the mid-wave infrared laser 1 is connected to the control computer 6 via a communication cable. The laser control software residing in the control computer 6 can edit different laser codes and send them to the mid-wave infrared laser 1 via the communication cable. The mid-wave infrared laser 1 generates a mid-wave infrared laser with an adjustable waveform according to the received laser code. The laser signal form includes frequency modulation signal and continuous wave signal.

[0028] Infrared imaging device 2, pitch motor 3, azimuth motor 4, and control handle 7 are connected to control computer 6 via a bus. When manually tracking a target, control handle 7 transmits control signals to control computer 6 by rotating the joystick. Control computer 6 converts the control signals into angle information and inputs it to pitch motor 3 and azimuth motor 4. Infrared imaging device 2 is fixedly connected to pitch motor 3 and azimuth motor 4 via a turntable. The rotation of the motors synchronously drives the infrared imaging device 2, causing changes in the infrared field of view. When automatically tracking a target, after imaging by the optical and detector components, infrared imaging device 2 tracks the aircraft target through the image component. During the target's movement, the image pixel offset is fed back to control computer 6 via the bus. Control computer 6 calculates the pixel offset and converts it into the turning angle of pitch motor 3 and azimuth motor 4, causing the turntable to rotate and continuously and stably track the aircraft in a closed loop.

[0029] When the mid-wave infrared laser 1 and the infrared imaging device 2 are fixedly connected, an axis alignment operation is required. The mid-wave infrared laser 1 radiates a laser signal, and the field of view interface presented by the infrared imaging device 2 on the control computer 6 is observed. When the laser radiation spot coincides with the center of the field of view, it is considered that the optical axis coincides. The axis alignment needs to be performed twice, once at close range and once at far range, to ensure that the optical path is parallel.

[0030] In actual use, at the initial moment, the aircraft is outside the field of view of the infrared imaging device 2. The operator manually operates the motors via the control handle 7 to bring the aircraft into the field of view of the infrared imaging device 2. The infrared imaging device 2 detects and tracks the aircraft as a moving target. After tracking the aircraft, the infrared imaging device 2 switches to automatic mode, using closed-loop control of the image pixel offset to control the pitch motor 3 and azimuth motor 4, achieving stable tracking of the aircraft. After stable tracking, the laser control software in the operation control computer 6 sends a pre-set laser code to the mid-wave infrared laser 1. The mid-wave infrared laser 1 then radiates a laser signal to the aircraft according to the laser code, simulating the effect of an infrared target.

[0031] Figure 2 This is a schematic diagram of the mid-wave infrared laser of this utility model. 8 is the power supply drive component, 9 is the laser component, and 10 is the optical frequency conversion component. The laser component 9 generates a 1.9μm pump light that meets the requirements. The optical frequency conversion component 10 converts the 1.9μm pump light output from the laser component 9 into the mid-wave band, finally outputting a laser signal covering 3μm-5μm that meets the specifications. The power supply drive component 8 provides electrical drive to the laser component 9 and the optical frequency conversion component 10 under external electrical drive, and controls the working state of the laser in real time according to the instructions of the control computer 6.

[0032] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. An infrared target simulation device based on a mid-wave laser, characterized in that, include: Mid-wave infrared laser (1), used to radiate mid-wave infrared laser outward; Infrared imaging device (2) is used to image and detect moving targets; The two-dimensional motion turntable includes a pitch motor (3) for synchronously controlling the pitch angle of the mid-wave infrared laser (1) and the infrared imaging device (2) and an azimuth motor (4) for synchronously controlling their azimuth angle. The control computer (6) is connected to the mid-wave infrared laser (1), the infrared imaging device (2), the pitch motor (3), and the azimuth motor (4) respectively. A mobile carrier platform is used to carry and transport the mid-wave infrared laser (1), the infrared imaging device (2), the two-dimensional motion turntable and the control computer (6). Among them, the mid-wave infrared laser (1) and the infrared imaging device (2) are installed side by side on the mounting surface of the two-dimensional motion turntable, and the optical axis of the mid-wave infrared laser (1) is adjustable in the pitch / azimuth direction.

2. The infrared target simulation device based on a mid-wave laser according to claim 1, characterized in that: The mobile support platform is a vehicle, and the two-dimensional motion turntable is fixedly installed on the vehicle.

3. The infrared target simulation device based on a mid-wave laser according to claim 1, characterized in that: The mid-wave infrared laser (1) includes a power drive component (8), a laser component (9), and an optical frequency conversion component (10). The laser component (9) is used to generate pump light in the 1.9μm band, and the optical frequency conversion component (10) is used to convert the wavelength of the pump light to the mid-wave infrared band of 3μm-5μm and output it. The power drive component (8) is used to receive external power to supply power to the laser component (9) and the optical frequency conversion component (10).

4. The infrared target simulation device based on a mid-wave laser according to claim 1, characterized in that: The infrared imaging device (2) includes an optical component, a detector component, and an image processing component. The optical component is used to receive energy radiation in the mid-wave infrared band; the detector component is used to convert the light signal detected by the optical component into an electrical signal and transmit it to the image component for image processing; the image component is used to process the received image and detect and track the target.

5. The infrared target simulation device based on a mid-wave laser according to claim 4, characterized in that: The infrared imaging device (2) is required to have an imaging field of view greater than 90° and an imaging distance of not less than 15km.

6. The infrared target simulation device based on a mid-wave laser according to claim 1, characterized in that: The optical axes of the mid-wave infrared laser (1) and the infrared imaging device (2) are parallel. By adjusting the azimuth and pitch of the optical axis of the mid-wave infrared laser (1), the laser spot emitted by it coincides with the center of the field of view of the infrared imaging device (2) and the preset far-distance reference point.

7. The infrared target simulation device based on a mid-wave laser according to claim 1, characterized in that: It also includes a control handle (7), which is communicatively connected to a control computer (6) for manually generating control commands to control the rotation of the pitch motor (3) and azimuth motor (4).

8. The infrared target simulation device based on a mid-wave laser according to claim 7, characterized in that: The infrared imaging device (2), pitch motor (3), azimuth motor (4) and control handle (7) are interconnected with the control computer (6) via a bus to form a moving target tracking system. The control computer (6) is configured to receive instructions from the control handle (7) for manual tracking, or to receive the moving target pixel offset detected by the infrared imaging device (2) and convert it into motor control instructions.

9. The infrared target simulation device based on a mid-wave laser according to claim 1, characterized in that: It also includes a power supply (5) that supplies power to the mid-wave infrared laser (1), the infrared imaging device (2), the pitch motor (3), and the azimuth motor (4).

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