红外与激光工程, 2004, 33 (4): 343, 网络出版: 2006-05-25
CCD噪声分析及处理技术
Analysis and processing of CCD noise
摘要
为了提高CCD的工作性能,根据CCD器件的工作原理,对CCD图像的噪声组成进行了较完整的分析,给出了其噪声的详细分类.根据各噪声的特点,提出了相应的噪声处理技术,并针对输出噪声,给出了双相关采样法、双斜积分法、钳位采样法三种相关双采样电路处理方式,使器件的信噪比得以提高.
Abstract
In order to improve CCD performance, the noise composition in CCD image is analyzed according to the operating principle of CCD, and CCD noise is categorized. Correspending measures are introduced to deal with different noise. Signal processing schemes of double-correlated sampling,dual slope integration and clamp sample are given to eliminate readout noise in this paper. As a result, the SNR of CCD is improved.
许秀贞, 李自田, 薛利军. CCD噪声分析及处理技术[J]. 红外与激光工程, 2004, 33(4): 343. 许秀贞, 李自田, 薛利军. Analysis and processing of CCD noise[J]. Infrared and Laser Engineering, 2004, 33(4): 343.
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