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%连续信号的采样 f=10; t=0:0.001:0.2; x=cos(2*pi*f*t); plot(t,x); %%%%%%%%%%采样%%%%%%%%%%%% Fs=50; Ts=1/Fs; n=0:20; xn=cos(2*pi*f*n*Ts); figure,stem(n,xn); % W=(hanning(length(n)))';xn=xn.*W

function somax close all; load sdata; hc = 20.* log10(abs(hc)) - 20*log10(noisefloor); xxx=linspace(-pi/dkx,pi/dkx,size(hc,2)); yyy=linspace(-pi/dky,pi/dky,size(hc,2)); zzzc1=max(maz(hc)); zzzc2=min(

function [X,Y,Z]=llh2ecef(lat,long,alt) % This function will convert latitude, longitude, and % altitude. Lat and long are in degrees with -lat=south % of equator; -long=west of PM; altitude is %

function [gn,Gn]=grav(lat,alt) % This will compute the gravity and gravitation for a % location on the earth. Inputs are latitude in deg and % altitude in meters. Outputs are in meters/s^2. % Vect

function [X,Y,Z]=llh2ecef(lat,long,alt) % This function will convert latitude, longitude, and % altitude. Lat and long are in degrees with -lat=south % of equator; -long=west of PM; altitude is %

function [gn,Gn]=grav(lat,alt) % This will compute the gravity and gravitation for a % location on the earth. Inputs are latitude in deg and % altitude in meters. Outputs are in meters/s^2. % Vect

%用罗盘图和羽毛图绘制复向量 theta=0:0.2:2*pi; z=sin(theta).*exp(j*theta); compass(z) feather(z)

%用plot3三维曲线绘图 x=0:0.1:20*pi; plot3(x,sin(x),cos(x)) %按系统默认设置绘图

%在图形中用ginput将点的坐标取出，并用gtext写字符串 x=0:0.1:2*pi; plot(x,sin(x)) [m,n]=ginput(2) %取两点坐标 gtext('2\pi') %写2π

%在图形窗口中添加文字标注 x=0:0.1:2*pi; plot(x,sin(x)) hold on plot(x,cos(x),'ro') title('y1=sin(x),y2=cos(x)') %添加标题 xlabel('x') %添加横坐标名 legend('sin(x)','cos(x)',4) %添加图例 text(pi,sin(pi),'x=\p