提出了一种交叉布置的大面积三角组合光幕的高精度激光靶密集度测试方法, 以解决超高射频弹幕**立靶密集度测试的难题。给出了激光器、激光光束整形系统、激光探测器阵列组成的大面积三角光幕光电开关系统设计方案, 分析了双大面积三角光幕测量原理, 推导出了三角光幕弹着点坐标解算方法。结合系统采用的探测器件输出特性分析了该测试方法的误差, 结果显示: 当规则靶面区域宽度从3.6 m扩展到10 m时, 最大测试误差从0.557 mm变为0.832 mm, 只增加了0.275 mm, 实现了很高的测量精度。模拟射击试验结果表明, 采用分辨率为1.6 mm的探测器阵列时, X坐标最大误差为0.747 mm, Y坐标最大误差为0.635 mm, 实现了对超高射频弹幕**立靶密集度的高精度检测。该测试方法具有光幕面积大、测量精度高、安装调试方便的特点。

A high precision laser screen dispersion measurement method based on a large area triangle light-screen composite was presented to solve the difficulty of location dispersion test for super-high firing rate barrage weapons. A design scheme for large area triangle photoelectric switch system composed by a laser, a laser beam shaping system and a laser detector array was given, the measuring principle of double large area triangle light-screens was analyzed, and an algorithm for triangle light-screen impact point coordinates was derived. By combining with the output characteristics of the detection device in the system, the algorithm error was analyzed. The analysis results show that maximum theoretical error increases by 0.275 mm, from 0.557 mm to 0.832 mm when the width of regular target area increases from 3.6 m to 10 m. The results of the test show that when the resolution of detector array is 1.6 m, the maximum X error of output coordinates is 0.747 mm, and the maximum Y error of output coordinates is 0.635 mm, which shows a high precision measurement for the location dispersion of super-high firing rate barrage weapons. This measurement method is characterized by a larger screen area, higher test precision and easy to install and debug.