The Signal calculation involves variables that directly relate to the properties of incoming light:
$$
s_{\text{light}} = \lambda L_{\text{target}} \Delta\lambda
$$
Where
- $s_{\text{light}}$ [W sr-1 m-1]: The factor of the signal calculation (used for the Signal-to-Noise calculation) that relies on the properties of the incoming light.
- $\lambda$ [nm]: Wavelength of incoming light.
- $L_{\text{target}}$ [W sr-1 m-2 m-1]: Target spectral radiance.
- $\Delta\lambda$ [nm]: Waveband of the sensor.