Abstract
To improve the detection probability and detection performance of photoelectric detection target under low environment luminance, this paper puts forward a new method to design its detection system by using the visible and infrared photoelectric detectors and form composite photoelectric detection target; sets up their detection probability calculation model of visible light and infrared photoelectric detector in single wavelength based on the spectral contrast between target and environment luminance. According to the binary decision theory, deduces the total detection probability calculation function by utilizing the visible light and infrared detector fusion method, and lead into the target distance factor to analyze its influence factor. Through experiment and analysis, the results found when the environment luminance is larger than 300 lx, the detection probability of composite photoelectric detection target reach 91% within the limit detection distance, which can improve the detection performance and capture rate of photoelectric detection target under low luminance conditions.
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