xin.m

迭代实现非线性函数（电离层延迟模型）的参数拟合问题

clear;
t=linspace(100,86400,1000);
fm=linspace(0,50,10);
A1=1;
B=0.1;

%C=1007947671;
%D=40000;

alpha0=0.05;
alpha1=0.005;
alpha2=0.002;
alpha3=0.0000005;
  
beta0=5000;
beta1=100;
beta2=20;
beta3=1;

gama0=1;
gama1=-3;
gama2=-0.5;
gama3=-0.01073072;

for k=1:10
for i=1:1000
delay(i)=It(A1,B,alpha0,alpha1,alpha2,alpha3,beta0,beta1,beta2,beta3,gama0,gama1,gama2,gama3,t(i),fm(k));
end
plot(t,delay)
hold on;
end