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用激光回波脉冲控制电子快门来操纵摄像机的曝光时间,是抑制背景噪声的一种有效方法。 提出了异步触发摄像机电子快门的预测方法,并将它应用在激光光斑的捕捉和测量中,提高了光斑图像的信噪比。该方法适用于测量经过编码后的远距离激光脉冲光斑,为应用电视摄像机捕捉有规律的瞬态存在的目标提供了一个途径。
Using a laser echo pulse to control the electronic shutter to manipulate the camera’s exposure time is an effective way to suppress background noise. The method of predicting the electronic shutter triggered by the asynchronism camera is proposed and applied to the capture and measurement of the laser spot to improve the signal to noise ratio of the spot image. This method is suitable for measuring long-distance laser pulse flashes after coding, which provides a way for the TV camera to capture the target of regular transient existence.