clear all;
close all;
clc;

I_dark = 100*1000; % 暗电流电子数，单位e-/s
Fn = 1; % 噪声因子，无量纲
QE = 0.6; % 平均量子效率，无量纲
Gain = 2.0; % 增益系数，无量纲
Noise_read = 120; % 读出噪声，单位e-
FWC = 120*1000; % 满阱电子数，单位e-
ADC = 12; % 量化位数，单位bit
Sensor_input = [I_dark,Fn,QE, Gain, Noise_read,FWC,ADC];


Lambda_center = 650; % 中心波长,单位nm
D_aperture = 1.2; % 光学系统口径，单位m
GSD = 0.25; % 星下点分辨率，单位m
H_orbit = 500; % 轨道高度，单位km
Tao0 = 0.8; % 光学系统透过率，无量纲
Epslong = 0.15; % 光学系统面遮拦比，无量纲
Optic_input = [Lambda_center,D_aperture,GSD,H_orbit,Tao0,Epslong];

t_TDI = NaN; % 积分时间，单位s，可以不输入，改输入积分级数M
M_TDI = 64; % 积分级数，无量纲，整数
T_imaging_input = [t_TDI,M_TDI];


Light_input = [4.35,13.36,55.7]; % 默认输入低端，典型，高端的辐射亮度

pho_input = imread('C:\Users\ASUS\Desktop\SNR_simulation\SNR_simulation.jpg');

pho_max = 0.8; % 最大反射率
pho_L_k = 71.46;  % pho到辐射亮度L的斜率k
pho_L_b = 9.26;  % pho到辐射亮度L的本底b
pho_L_infor = [pho_max,pho_L_k,pho_L_b];
site_str = 'C:\Users\ASUS\Desktop\SNR_simulation\\';

[SNR_output, mmm_pho_SNR, Picture_output] = SNR_simulation(Sensor_input,Optic_input,T_imaging_input,Light_input,pho_input,pho_L_infor,site_str);
mmm_pho_SNR(1,:)
mmm_pho_SNR(2,:)