[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 DC`6g#*<  

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 f9u["e  
>fo &H_a  
clc ^sH1YE}0  
clear {Z;W|w1t  
close all b]6;:Q!d  
nx = 0:0.6:150; {U=za1Ga  
n = length(nx)-1; ?"AcK"v  
figure t]FFGnBZ  
xz = []; (FMGW (  
yz = []; *cTN5S>  
for ii = 1:n > ^3xBI:Q  
    f=300; L~V 63K  
    h=150-nx(ii); L.!:nu]
rV  
    b=atan(h/f); Fw:s3ON9}  
    d=(b/pi)*180 Uy ;oJY  
    syms c oTOe(5N8a  
   Y=solve(sin(c-b)-1.494*sin(3*c-pi)==0,c); wSIt"g,%  
   C=double(Y); I?-9%4 8iM  
   e=(C/pi)*180; wlKpHd*  
    x=0:0.1:0.6; w_eu@R:u@  
    y=(0.6-x)*tan(C); 4)9X) Qx  
    xz = [xz x+nx(ii)] %8 cFzyE*  
    yz = [yz y]; . 36'=K  
    plot(xz,yz,'k-') iG!MIt*  
    hold on }SpMHR`  
    pause(0.01) )X\3bPDJR  
end TQ@*eoJj  
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