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针对CCD输出信号中的复位噪声,文章介绍了处理复位噪声较为常用的方法——相关双采样技术,并对相关双采样技术中采样位置选取的方法进行分析和研究,最后进行了实验验证。结果表明:用文中方法选取的采样位置进行相关双采样,可以较好的减小CCD输出信号中复位噪声的影响,提高信噪比。
Aiming at the reset noise in the CCD output signal, this paper introduces a more commonly used method to deal with resetting noise-correlated double sampling technique, analyzes and studies the method of choosing the sampling position in the correlated double sampling technique, and finally verifies it by experiments. The results show that the correlated double sampling at the sample position selected by the method in the paper can reduce the influence of reset noise in the CCD output signal and improve the signal to noise ratio.