Video signal-to-noise ratio (SNR) is an important com-prehensive performance index of the Low Light Level (LLL) Camera. Test and analysis of SNR play a very important role in evaluating anddesigning new LLL Cameras.

• 视频信噪比(SNR)是微光摄像机的一项重要的综合性指标,对它的测试与分析在评价和设计新型微光摄像机方面起着相当重要的作用。