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ZHIYONG LEI1,* , YUNCHAO ZHU1, YANRAN LI1, XIONG CHEN1
Laser detection system is greatly influenced by sky background illumination and reflection characteristics of the target, to improve the detection performance of laser photoelectricity detection optical system; this paper studies the laser photoelectricity detection performance and the calculation method of equivalent noise of detection circuit. Based on laser detection principle, the relation between target reflection radiation flux and the background illumination ar e analyzed and the calculation m o d e l is established. The calculation function of target reflection surface area is deduced by using finite element analysis method which divides the target surface area into a lot of unit areas, the calculation method of the reflection laser energy that the photoelectric detector can receive is analyzed, and the mathematical function about detection distance and laser illumination is obtained. Based on the detection circuit, the calculation method of detection circuit equival ent noise is set up and the expression on SNR is deduced. Through experiment and analysis, the relation between the detection distance and laser luminous flux and SNR are found, at the same time, the results show that the SNR is higher and the laser power are stronger, the reflected laser is stronger in detector, and the target reflector area is greater, the detection sensitivit y is higher..
Laser, Photoelectricity detection, Detection performance, Equivalent noise, Illumination SNR.
ZHIYONG LEI, YUNCHAO ZHU, YANRAN LI, XIONG CHEN, Research on laser photoelectricity detection performance and equivalent noise calculation method of detection circuit in laser detection system, Optoelectronics and Advanced Materials - Rapid Communications, 8, 11-12, November-December 2014, pp.1016-1024 (2014).
Submitted at: April 21, 2014
Accepted at: Nov. 13, 2014
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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