End-to-End Image Simulator for Optical Imaging Systems: Equations and Simulation Examples

Table 6

Radiance, SNR, and across-track MTF values corresponding to the extreme simulated albedo values, calculated for different ground spatial sampling (GSD), pupil diameter (𝐷) and the two simulation conditions reported in Table 4.

	Simulation scenario		SNR at L at 𝑎=0.09		SNR at L at 𝑎=0.20		MTF across-track at period (m)
Case/; SZA	GSD (m)	𝐷 (mm)	𝐿 (W/m^2/sr/𝜇m)	SNR	𝐿 (W/m^2/sr/𝜇m)	SNR	5	7	10	15	20
A/32^∘	2.5	150	40.0	22.5	73.4	37.7	0.09	0.26	0.46	0.65	0.74
B/72^∘			14.5	8.8	16.7	10.1
A/32^∘	2.5	300	40.0	69.1	73.4	104.9	0.18	0.38	0.57	0.75	0.81
B/72^∘			14.5	31.0	16.7	34.9
A/32^∘	3.5	150	40.0	52.0	71.5	79.8	0.04	0.17	0.37	0.58	0.68
B/72^∘			14.5	22.3	16.6	25.1
A/32^∘	5	150	40.0	110.8	71.6	158.9	0.001	0.06	0.22	0.45	0.61
B/72^∘			14.5	54.0	16.6	60.0