[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 Q0Do B  

图片:})WX7H~ND~3OE[$Y(~WEX_R.png

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Y值为负的那几个点是异常值 7FPSBvU#/  
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clc kvbW^pl  
clear .tGz,z}  
close all 8x)i{>#i  
nx = 0:0.6:150; L7aVj&xM  
n = length(nx)-1; ZzgzeT+bv  
figure fNu/>pN  
xz = []; 1goRO  
yz = []; (B$>o.
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for ii = 1:n :<B_V<  
    f=300; T30fp  
    h=150-nx(ii); ;92xSe"Ww  
    b=atan(h/f); ggrYf*  
    d=(b/pi)*180 YaSBIq{z  
    syms c 
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   Y=solve(sin(c-b)-1.494*sin(3*c-pi)==0,c); w{dRf!b69  
   C=double(Y); 0M&n3s{5I  
   e=(C/pi)*180; #k)z5vZ$h  
    x=0:0.1:0.6; R_g(6l"3R^  
    y=(0.6-x)*tan(C);  )sdHJ  
    xz = [xz x+nx(ii)] Z}0xK6  
    yz = [yz y]; o!~XYEXvUa  
    plot(xz,yz,'k-') b\H&E{Gn|x  
    hold on :ChXzZ  
    pause(0.01) 5NN;Fw+  
end MG.c`t/w  
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