还有。常用的系统信噪比估算方法主要有两种：比探测率法和等效电子法。对于基于带读出电路面阵探测器的高光谱成像仪采用基于量子效率的计算方法－等效电子法计算信噪比。这种方法将入射到探测器像元的辐射功率转化成光子数，再由探测器的光谱量子效率得到探测器激发的信号电子数Ne(λ)，根据系统输出的噪声Nn(λ)就可以得到系统的SNR。计算系统信噪比之前需要分析仪器入瞳处的辐射功率大小。

There are two commonly used methods for estimating system SNR: the detectability method and the equivalent electron method. For hyperspectral imagers based on line readout circuit area detectors, the SNR is calculated using the equivalent electron method based on quantum efficiency. This method converts the incident radiation power into photons that enter the detector pixel, and then the number of signal electrons Ne(λ) excited by the detector is obtained from the detector's spectral quantum efficiency. The system's SNR can be obtained based on the noise Nn(λ) output by the system. Before calculating the system's SNR, it is necessary to analyze the radiation power at the instrument entrance pupil.