针对飞行弹丸穿越天幕靶光幕的目标信息识别与提取问题,提出小波分析法检测与识别弹丸信息。将天幕靶探测电路输出的目标信号归结为一个两类判别的模型,利用小波Fisher判别法,构造信号的特征向量,研究弹丸作用于光幕的弹丸信号识别;根据小波模极大值理论,寻找弹丸信号的奇异点,按照信号变化的奇异点,推算出弹丸作用光幕瞬间的起始时刻。根据天幕靶测速原理,该检测与提取方法可以提高系统测速精度。 Aiming at the problem of identifying and extracting the target information of the flying projectile passing through the light curtain of the sky screen, wavelet analysis is proposed to detect and identify the projectile information. The target signal output by the sky curtain detection circuit is reduced to a two-class discriminant model. By using the wavelet Fisher discriminant method, the eigenvectors of the signal are constructed to study the projectile signal recognition of the projectile acting on the light curtain. According to the wavelet modulus maximum theory, The singular point of the projectile signal, in accordance with the singular point of signal changes, projected moment of light curtain start the moment. According to the speed principle of the sky screen, the detection and extraction method can improve the system’s speed measurement accuracy.