[求助]matlab编程绘图，三角函数，菲涅尔 [复制链接]

程序有问题，在140.4、139.8、132等点处有异常值，请教一下大家怎么改，应该是Y=…那一步的式子有问题，谢谢 a^hDxeG  

图片:})WX7H~ND~3OE[$Y(~WEX_R.png

O(2)A>}  
Y值为负的那几个点是异常值 D1}Bn2BM$  
Mj&q"G  
clc s2FJ^4  
clear \DI%/(?  
close all bS=aFl#  
nx = 0:0.6:150; l}:&}  
n = length(nx)-1; 2MS1<VKZ@  
figure Uo>pV9xRG  
xz = []; oJE~dY$Q  
yz = []; A.8{LY;  
for ii = 1:n 4D=p#KZ  
    f=300; Km7HB!=<  
    h=150-nx(ii); 2Z;wU]  
    b=atan(h/f); se(ZiyHp  
    d=(b/pi)*180 !C]0l  
    syms c klm
RU@D  
   Y=solve(sin(c-b)-1.494*sin(3*c-pi)==0,c); %C^U?m`  
   C=double(Y); b+bgGLo  
   e=(C/pi)*180; t}n:!v"|+O  
    x=0:0.1:0.6; }F=scbpXj  
    y=(0.6-x)*tan(C); owM3Gz%?UA  
    xz = [xz x+nx(ii)] ,Dd )=  
    yz = [yz y]; 'id]<<F  
    plot(xz,yz,'k-') 4iMo&E<  
    hold on "Qj;pqR  
    pause(0.01) In<L?U?([D  
end \wwY?lOe  
fG_.&!P  
=aR'S\<  
Gw%P5 r}Y  
1W*%}!&Gm