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HANSHAN LI1,* , HUI GUAN1
The sky-screen is a kind of sensor for detecting flying projectile. Due to the uncertainty of the test environment, the traditional sky-screen cannot work stably. Especially in the low environmental illumination, the detection ability of the traditional sky-screen is too low to meet the detection requirements of the projectile in the weapon testing range. In order to improve the detection ability of traditional sky-screen in the low environmental illumination, based on the detection principle of the traditional sky-screen, this paper designs a fan-shaped laser source with a certain thickness by using high-power laser, the high-power laser is located in the traditional sky-screen, meantime, make the fan-shaped laser area coincide with the detection area of the traditional sky-screen, the test system formed is called laser-screen. When the target passes through the detection area of laser-screen, we establish a calculation model of laser reflected energy and target radiation flux, and derive the signal-to-noise ratio function of the target detected by the laser-screen according to this. Through calculation and experiment, we obtain the conclusion that when the environmental illumination is less than 1800Lx, the signal-to-noise ratio of the laser-screen can reach more than 4.5, while the signal-to-noise ratio of the traditional sky-screen is less than 1.5, the results show that the detection ability of the new designed laser-screen is significantly better than that of the traditional sky-screen.
Laser-screen, Reflected laser, Detection screen, Target, Signal-to-noise ratio.
HANSHAN LI, HUI GUAN, Target’s laser radiation energy calculation and detection performance in laser-screen, Optoelectronics and Advanced Materials - Rapid Communications, 15, 11-12, November-December 2021, pp.578-585 (2021).
Submitted at: June 18, 2021
Accepted at: Nov. 24, 2021
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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