clc,clear; w=[1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000 3100 3200 3300 3400 3500 3600 3700 3800 3900 4000 4100 4200 4300 4400 4500 4600 4700 4800 4900 5000 5100 5200 5300 5400 5500 5600 5700 5800 5900 6000 6100 6200 6300 6400 6500 6600 6700 6800 6900 7000 7100 7200 7300 7400 7500 7600 7700 7800 7900 8000] y=[128.516400000000 129.051800000000 128.033300000000 127.200600000000 128.426800000000 129.443800000000 130.911200000000 133.518700000000 135.252200000000 134.405500000000 130.984900000000 128.253500000000 134.091800000000 138.610300000000 140.909500000000 142.663100000000 143.729300000000 144.760800000000 145.385400000000 145.507500000000 145.554600000000 144.753100000000 143.967200000000 143.410500000000 142.252300000000 141.169300000000 140.460800000000 139.602900000000 138.858500000000 138.495700000000 138.120200000000 137.681300000000 137.482500000000 137.336300000000 137.364100000000 137.357900000000 137.697500000000 138.077200000000 138.098400000000 137.505300000000 136.098700000000 133.593700000000 131.495500000000 130.731200000000 131.250200000000 131.745100000000 132.140600000000 132.177500000000 131.442700000000 130.797500000000 129.799200000000 128.974100000000 129.469600000000 130.020000000000 129.895800000000 129.383100000000 127.767500000000 124.463300000000 118.383000000000 108.328600000000 113.139700000000 115.693900000000 115.728500000000 114.169300000000 116.192000000000 120.357300000000] y=(y-120)/20 H=10.^(y) f=fittype('A*sqrt(R_s^2+w.^2*m_s^2)./sqrt((R_s+R_m)^2+(w*m_s+w*m_m+1./(w*s_m)).^2)','independent','w'); cfun=fit(w,H,f) w1=1500:100:8000; H1=cfun(w1) plot(w,H,'r*',w1,H1,'b-') |
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