怎样去除低频段的信号
我作了个轨道不平顺的仿真,得到随机轨道不平顺的模拟值.可是当我用matlab进行校验士时,低频段有很大出入,不知是为什么,请教各位高手拟合曲线的matlab程序是:fz=[ 1.43376 0.69393 -0.25528 1.37453 1.00264 0.49115 1.01610 0.76078 1.24082 1.99383 1.09090 -3.30334 -3.55823 -2.48473 -0.98362 -0.69886 1.30384 1.68661 0.90965 2.34295 2.56134 2.40658 0.90916 -1.38407 -3.48915 -3.35881 -1.74176 -0.27230 0.09595 -1.09758 -0.41104 0.90685 1.26109 2.65646 2.10720 1.67299 1.26378 1.55766 0.74798 -2.36920 -2.69915 -2.73639 -1.97327 -2.11704 -0.89280 1.50410 3.18689 2.52305 0.20564 -0.51121 -0.72133 -1.58035 -1.36359 0.86662 1.93534 0.31555 0.47457 1.54613 1.58336 1.36329 -0.69690 -2.14770 -1.58573 -1.88538 -1.25212 -1.08407 -1.66728 -1.44180 1.00759 3.02269 2.84978 2.53697 2.00460 1.33167 -0.03065 -0.79133 -1.12260 -2.13614 -2.61968 -1.92351 -1.64922 -0.74003 1.00055 2.32780 2.43839 2.09502 0.55544 -0.09799 -1.71155 -1.56186 -0.18618 -0.44458 0.00725 0.17952 0.21622 -0.19739 -0.82023 -1.14363 -0.27500 0.22471 2.16321 2.87439 1.98281 0.50915 -0.72145 -1.05870 -1.59311 -2.29463 -1.55632 0.08655 0.61472 -0.36552 -0.47903 -0.75582 1.43098 1.77356 1.03596 -0.12533 -0.74467 -0.01320 0.83992 1.49380 1.61006 0.97395 -0.06107 -0.86348 -2.73995 -2.35382 -2.54569 -1.68443 0.27463 0.89026 1.84985 1.76063 0.34692 0.86636 0.73295 -0.10062 -0.32787 -0.47890 0.16679 0.25511 0.80058 1.47784 2.26910 0.91114 -1.88396 -3.16914 -2.96201 -1.73954 -1.34562 -0.91808 0.40838 0.34321 0.21020 1.58203 3.19915 3.51552 1.78876 0.87548 -0.92476 -0.36852 -0.93410 -1.13490 0.26121 0.47817 -0.46553 -2.30956 -4.18415 -2.84411 -0.86076 0.72911 1.73661 1.41738 1.84671 1.98707 1.65257 1.25638 1.66270 1.57009 1.22635 0.22133 -1.04565 -3.11305 -2.59435 -2.50572 -2.26381 -1.43726 -0.60569 0.43719 1.93362 2.02897 0.53750 0.42266 0.74525 0.52877 0.25201 0.68194 1.51116 1.05082 0.40692 -0.02014 -0.24197 -1.60743 -0.96447 0.49020 -1.96287 -2.93349 -1.71851 -1.28458 -0.09511 0.51933 0.83139 1.96032 1.88783 1.38045 1.05498 1.00313 1.13265 0.27057 -0.10603 -1.34415 0.00761 0.56597 0.48018 -1.57649 -3.19870 -3.60054 -2.61413 -1.38269 0.16557 1.65189 2.70833 3.32955 2.35340 2.41069 1.64531 0.58277 -0.63618 -0.92966 -1.12669 -0.91314 -1.72708 -2.64896 -2.38401 -2.18230 -0.71005 1.07340 2.14620 2.53895
];=psd(fz,length(fz),25);
loglog(f,p,'-r')
[ 本帖最后由 hycom2008 于 2007-9-19 15:07 编辑 ] 高通滤波
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