LBS-1 fire accuracy measurement system was set up. Influence factors including detection circuit of photo-electricity transforming and accepting, and brightness of sky background, were analyzed.

建立了LBS - 1型立靶精度测量系统中的天幕靶，对天幕靶探测性能存在的各种影响因素，如：光电转换接收器件及其探测电路、天空背景亮度的强弱等进行了分析。

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