Test and analysis on variable-integration low-light-level CCD camera signal and noise properties

Video signal-to-noise ratio (SNR) is an important combination performance index of the low light level (LLL) camera, test and analysis on it play a very important role in evaluating and designing new LLL cameras. It is an innovation in our teaching and research section that we test video SNR by using digital storage oscilloscope (DSO) combined with a computer and set up a perfect LLL camera signal and noise property test and analysis system. Using this system, we test and analyze the signal and noise properties of the `variable integration low light level CCD camera' which our teaching and research section developed.