c3xlsqklobuchar.m

迭代实现非线性函数（电离层延迟模型）的参数拟合问题

function y=c3xlsqklobuchar(a,x)

y=5+a(1)+a(2)*(50000-72000)+   (a(3)+a(4)*x+a(5)*x.*x+a(6)*x.*x.*x).*cos(2*pi*(50000-50400-a(7)-a(8)*x-a(9)*x.*x-a(10)*x.*x.*x)/(a(11)+a(12)*x+a(13)*x.*x+a(14)*x.*x.*x));

%y=5+a(1)+a(2)*(x-72000)+   a(3)*cos(2*pi*(x-a(4))/a(5));