[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 ~_z"So'|F_  
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Y值为负的那几个点是异常值 "K"]/3`k-  
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clc Zw)*+> +FV  
clear 4rmSo^vK  
close all Zj*kHjn"
 
nx = 0:0.6:150; RcASFBNpS  
n = length(nx)-1; cPemrNxydN  
figure RW!_ZzZ  
xz = []; gm-I)z!tz  
yz = []; g`)5g5  
for ii = 1:n 0{8^)apII  
    f=300; r@2{>j
8  
    h=150-nx(ii); 5i+0GN3nd  
    b=atan(h/f); j &#A 9!  
    d=(b/pi)*180 #q06K2  
    syms c = }&@XRLJ  
   Y=solve(sin(c-b)-1.494*sin(3*c-pi)==0,c); 1;\A./FVv  
   C=double(Y); ?HP54G<{xz  
   e=(C/pi)*180; X_7cwPY  
    x=0:0.1:0.6; PjH[8:,  
    y=(0.6-x)*tan(C); 5kK:1hH
7  
    xz = [xz x+nx(ii)] cmzu @zq  
    yz = [yz y]; y;!qE~!3  
    plot(xz,yz,'k-') ?y] q\>  
    hold on nPW?DbH +  
    pause(0.01) )wmG&"qsP  
end m#D+Yh/y{n  
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