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Active imaging type infrared stealth system

An imaging and infrared technology, which is applied in the field of infrared stealth system and mid-wave infrared stealth system, can solve the problems of complex temperature control system structure and circuit connection, limited number of stealth systems, and low fidelity of background, so as to achieve enhanced stealth effect, Effect of short response time, simple structure and circuit connection

Active Publication Date: 2013-12-04
西安应用光学研究所
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Problems solved by technology

Since the thermoelectric ceramic panel is used as the infrared radiation display unit, the unit area is relatively large, and the number arranged on the stealth system is limited, and the background fidelity displayed is not high, resulting in an unsatisfactory stealth effect; It is realized by resistance heating, and it usually takes a long time to reach a stable temperature by using this temperature control feedback method, which leads to a slow stealth speed of the system; in addition, the structure and circuit connection of the temperature control system adopted are relatively complicated

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Embodiment Construction

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

[0025] Such as figure 1 As shown, the present invention takes military vehicles as the target of stealth, and the preferred embodiment includes a thermal imager 1, a two-dimensional turntable 2, an image acquisition and processing system 3, an infrared LED drive circuit 4, and an infrared LED display system 5.

[0026] The thermal imager 1 has a response band of 3-5 μm, a resolution of 640×512, a field of view of 11°×8°, and an output image frame rate of 50Hz. The thermal imager 1 has a focusing mechanism and an automatic gain control function. The thermal imager 1 is installed on the two-dimensional turntable 2, and the thermal imager 1 can be aimed at the target by adjusting the two-dimensional turntable 2. The combination of the thermal imager 1 and the two-dimensional turntable 2 is installed on the top of the vehicle. The vid...

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Abstract

The present invention discloses an active imaging type infrared stealth system. The active imaging type infrared stealth system is composed of a thermal imaging system, an image acquisition processing system, an infrared LED drive circuit and an infrared LED display system. The main characteristics of the present invention are that the infrared LED display system is arranged in various directions of the stealth system regionally, the image acquisition processing system acquires a background infrared image generated by the thermal imaging system, at the same time, transforms a background gray level image into a modulation pulse width image according to the corresponding correlation of the modulation pulse width of an infrared LED and an image gray level, and then zooms and segments the image to form the segmentation data blocks corresponding to the number of the display sub-units and send the segmentation data blocks to the infrared LED drive circuit, and the infrared LED drive circuit controls the infrared LED display system to display the background, so that the infrared characteristics of the stealth system in a hostile infrared system are similar to the background, and accordingly, the stealth purpose is achieved. The active imaging type infrared stealth system of the present invention has the advantages of being high in camouflage fidelity, fast in stealth speed and simple in structure, being easy to install and disassemble, etc.

Description

technical field [0001] The invention belongs to the technical field of photoelectric countermeasures, and mainly relates to an infrared stealth system, in particular to a mid-wave infrared stealth system adopting an active imaging method. Background technique [0002] With the development of infrared detection technology, military targets face the danger of being discovered at any time. In order to improve the survivability of the target and reduce the probability of the target being discovered by the enemy's infrared reconnaissance system, countries pay more and more attention to the research of infrared stealth technology. The main technical ways to carry out infrared stealth on the target are: reduce the thermal radiation of the target, change the thermal radiation distribution of the target surface, reduce the thermal radiation difference between the target and the background, and use special materials to make the target radiation band outside the infrared detector respo...

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Application Information

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IPC IPC(8): G05B19/042
Inventor 骆延令高教波高蒙王吉龙赵宇洁高飞
Owner 西安应用光学研究所
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