A line laser with high power as the background light source for the design of a new photoelectric detection target is proposed in this paper, aiming to improve the detection ability of the traditional photoelectric detection target under low background illumination. The laser emitted pulse waveform function and the laser echo pulse response function were used to establish the mathematical model of the reflected echo power of projectile in the detection area and derive the calculation function of minimum detectable echo power in the line laser detection screen, according to information of the line laser emitted power, incident angle of projectile, duration time and detection distance of projectile passing through the line laser detection screen. Calculations and experimental results showed that the design method of line laser detection screen and calculation model of laser echo power are reasonable, and the detection ability of line laser detection screen is obviously higher than that of traditional photoelectric detection screen, especially in low background illumination; at the same time, the designed line laser detection screen was used to combine a six line laser detection screen intersection test system, based on live ammunition for shooting. The test system is stable and able to obtain the dynamic parameters of the flying projectile, verifying that the design of the line laser detection screen in new photoelectric detection target can be suitable for shooting range test applications.

为了提高传统光电检测目标在低背景照度下的检测能力，本文提出了一种以大功率线激光作为背景光源设计新型光电检测目标的方法。利用激光发射脉冲波形函数和激光回波脉冲响应函数，建立弹丸在探测区域内反射回波功率的数学模型，推导出线激光探测屏内最小可探测回波功率的计算函数，根据线激光发射功率、弹丸入射角、弹丸通过线激光探测屏的持续时间和探测距离等信息。计算和实验结果表明，线激光探测屏的设计方法和激光回波功率计算模型是合理的，线激光探测屏的探测能力明显高于传统光电探测屏，尤其是在低背景照度下；同时，设计的线激光探测屏用于结合六线激光探测屏相交测试系统，基于实弹进行射击。测试系统稳定，能够获取飞行弹丸的动态参数，验证了新型光电探测靶中线激光探测屏的设计能够适用于靶场测试应用。线激光检测屏的检测能力明显高于传统光电检测屏，尤其是在背景照度较低的情况下；同时，设计的线激光探测屏用于结合六线激光探测屏相交测试系统，基于实弹进行射击。测试系统稳定，能够获取飞行弹丸的动态参数，验证了新型光电探测靶中线激光探测屏的设计能够适用于靶场测试应用。线激光检测屏的检测能力明显高于传统光电检测屏，尤其是在背景照度较低的情况下；同时，设计的线激光探测屏用于结合六线激光探测屏相交测试系统，基于实弹进行射击。测试系统稳定，能够获取飞行弹丸的动态参数，验证了新型光电探测靶中线激光探测屏的设计能够适用于靶场测试应用。设计的线激光探测屏用于结合六线激光探测屏相交测试系统，基于实弹进行射击。测试系统稳定，能够获取飞行弹丸的动态参数，验证了新型光电探测靶中线激光探测屏的设计能够适用于靶场测试应用。设计的线激光探测屏用于结合六线激光探测屏相交测试系统，基于实弹进行射击。测试系统稳定，能够获取飞行弹丸的动态参数，验证了新型光电探测靶中线激光探测屏的设计能够适用于靶场测试应用。