Objective Due to the complex ground background environment, single uncooled infrared photoelectric stabilizing device has the shortcomings of low target recognition and tracking reliability in the application.
Methods To resolve the issue, firstly, temperature character difference between typical ground targets and the background, and the influence of background environment on infrared imaging are studied. Based on this, a dual optical Photoelectric stabilizing device with infrared channel (IR channel) and television channel (TV channel) (two channels independently) is designed. By comparing the imaging performance of the composite stabilized tracking device and the single infrared stabilized tracking device, the feasibility of the composite stabilized tracking device was analyzed.
Results and Discussions The influence of background environment on infrared imaging is as follows. In the morning/evening hours, the temperature difference between the target and the ground is small (less than 5 K), and the infrared image has the defects of low target contrast and low signal-to-noise ratio; During the midday period, the infrared image has the defect that the target is completely submerged in the background. The design of a composite stabilized tracking device with infrared channel and TV channel, the TV channel has little influence on the imaging quality of the infrared channel (the actual light transmission of the infrared channel is relatively reduced by less than 5%). Under the condition of large interference of ground background infrared radiation noise, the image of the TV channel is clear, and the image of the infrared channel is clear under the condition of sufficient temperature difference of the target, which verifies the feasibility of the overall scheme of the infrared-TV stable tracking device.
Conclusions The IR-TV dual optical photoelectric stabilizing device form a good complementary relationship, which can significantly expand the application range of the stabilized tracking device.
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