针对激光告警系统属于小孔径、远距离弱信号和高探测概率探测的特点,分析和研究了大气湍流造成的激光信号的闪烁影响模型,探讨了大气闪烁效应对激光告警探测概率的影响规律。结合激光告警探测器的信号探测原理和探测器噪声分析,基于Andrews双随机起伏调制理论推导了适用于中、强大气闪烁双Gamma模型的激光信号大气传输和信号探测理论模型。根据仿真计算和结果分析指出,激光告警系统的探测概率不但是与探测器功率信噪比、探测器噪声、环境背景噪声和系统功率阈值等因素密切相关的综合函数,而且大气路径的闪烁效应也对激光告警系统的探测概率有明显影响。 Aiming at the characteristics of small aperture, long distance weak signal and high probing probability of laser warning system, the influence model of laser signal caused by atmospheric turbulence is analyzed and studied. The influence of atmospheric flicker on the probability of laser warning detection is discussed. Combined with the signal detection principle and detector noise analysis of laser alarm detector, a theoretical model of laser signal atmospheric transmission and signal detection suitable for medium and strong glittering dual Gamma model is derived based on Andrews double random fluctuation modulation theory. According to the simulation calculation and result analysis, it is pointed out that the detection probability of laser alarm system is not only an integrated function which is closely related to the factors such as power SNR, detector noise, environmental background noise and system power threshold, but also the scintillation effect The probability of detecting the laser warning system has a significant impact.