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LI LIN1,* , QIANG MENG2, JIACHENG CHEN2
The detection distance of infrared photoelectric detection system is determined by photoelectric detector characteristics, target and background radiation, target imaging diffuse spot size and other factors. But the traditional calculation function of detection distance of system that doesn’t consider the target imaging diffuse spot on the photoelectric detector, it makes the calculated target distance always longer than the actual target distance. To solve this problem, based on the basic principle of infrared photoelectric detection system and the existing problems in traditional calculation function, this paper proposes a new calculation model of detection distance considering target diffuse spot of system, which derives point target diffuse spot calculation function and total radiation energy function, and presents the new detection distance function of system. This detection distance function ignores the influence of background environment, by combining the system modulation contrast parameters and considering optical lens emissivity, background emissivity and target emissivity in actual testing environments, a more precise detection distance function is established. The experimental verification shows that the detection distance calculation model considering diffuse spot and system modulation contrast can calculates more accurate target distance than traditional model, which proves the new model is more effective and scientific.
Infrared photoelectric detection system, Detection distance, Diffuse spot, Target and background radiation, Modulation contrast.
LI LIN, QIANG MENG, JIACHENG CHEN, A calculation method of operation range of infrared point target in photoelectric detection system based on considering the target diffuse spot, Optoelectronics and Advanced Materials - Rapid Communications, 17, 7-8, July-August 2023, pp.286-294 (2023).
Submitted at: March 5, 2023
Accepted at: Aug. 7, 2023
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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