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弹道相机通常是在夜间对飞行目标进行拍摄，在相机类型不改变的情况下要达到白天工作能力具有一定困难，主要障碍是拍摄后，底板上目标与背景的衬比（度）下降，难以达到判读要求．针对这一问题，本文详细叙述了各因素对判读要求的影响，提出了改善相机白天工作能力的可行方法．
Trajectory cameras usually shoot targets at night, making it difficult to work daytime without changing the type of camera. The main obstacle is that the contrast (degree) between the target and the background on the floor drops after shooting, making it difficult to achieve Interpretation requirements. In response to this problem, this paper describes in detail the impact of various factors on the interpretation requirements and puts forward feasible ways to improve the camera’s ability to work in the daytime.