%%========================================================
clear;clc;close?all;
%%========================================================
%%Parameter--constant
C=3e8;???????????????????????????%propagation?speed
%%Parameter--radar?characteristics
Fc=1e9;??????????????????????????%carrier?frequency?1GHz
lambda=C/Fc;?????????????????????%wavelength?
%%Parameter--target?area
Xmin=0;??????????????????????????%target?area?in?azimuth?is?within[XminXmax]
Xmax=50;??????????????????
Yc=10000;????????????????????????%center?of?imaged?area
Y0=500;??????????????????????????%target?area?in?range?is?within[Yc-Y0Yc+Y0]
?????????????????????????????????%imaged?width?2*Y0
%%Parameter--orbital?information
V=100;???????????????????????????%SAR?velosity?100?m/s
H=5000;??????????????????????????%height?5000?m
R0=sqrt（Yc^2+H^2）;
%%Parameter--antenna
D=4;????????????????????????????%antenna?length?in?azimuth?direction
Lsar=lambda*R0/D;???????????????%SAR?integration?length
Tsar=Lsar/V;?????????????????????%SAR?integration?time
%%Parameter--slow-time?domain
Ka=-2*V^2/lambda/R0;????????????%doppler?frequency?modulation?rate
Ba=abs（Ka*Tsar）;????????????????%doppler?frequency?modulation?bandwidth
PRF=2*Ba;????????????????????????%pulse?repitition?frequency
PRT=1/PRF;?????????????????????%pulse?repitition?time
ds=PRT;?????????????????????????%sample?spacing?in?slow-time?domain
Nslow=ceil（（Xmax-Xmin+Lsar）/V/ds）;?%sample?number?in?slow-time?domain
%?Nslow=2^nextpow2（Nslow）;??????????%for?fft
sn=linspace（（Xmin-Lsar/2）/V（Xmax+Lsar/2）/VNslow）;%discrete?time?array?in?slow-time?domain
PRT=（Xmax-Xmin+Lsar）/V/Nslow;????%refresh
PRF=1/PRT;
ds=PRT;
%%Parameter--fast-time?domain
Tr=5e-6;?????????????????????????%pulse?duration?10us
Br=30e6;????????????????????????%chirp?frequency?modulation?bandwidth?30MHz
Kr=Br/Tr;????????????????????????%chirp?slope
Fsr=3*Br;????????????????????????%sampling?frequency?in?fast-time?domain
dt=1/Fsr;?????????????????????????%sample?spacing?in?fast-time?domain
Rmin=sqrt（（Yc-Y0）^2+H^2）;
Rmax=sqrt（（Yc+Y0）^2+H^2+（Lsar/2）^2）;
Nfast=ceil（2*（Rmax-Rmin）/C/dt+Tr/dt）;%sample?number?in?fast-time?domain
%?Nfast=2^nextpow2（Nfast）;???????????????????%for?fft
tm=linspace（2*Rmin/C2*Rmax/C+TrNfast）;?%discrete?time?array?in?fast-time?domain
dt=（2*Rmax/C+Tr-2*Rmin/C）/Nfast;????%refresh
Fsr=1/dt;
%%Parameter--resolution
DY=C/2/Br;??????????????????????????%range?resolution
DX=D/2;????????????????????????????%cross-range?resolution
%%Parameter--point?targets
Ntarget=1;???????????????????????????%number?of?targets
%format?[x?y?reflectivity]
Ptarget=[XminYc1
?????????????????XminYc+10*DY1
??????????????Xmin+20*DXYc+50*DY1];??
disp（‘參數:‘）
disp（‘Sampling?Rate?in?fast-time?domain‘）;disp（Fsr/Br）
disp（‘快時間域采樣點數‘）;disp（Nfast）
disp（‘Sampling?Rate?in?slow-time?domain‘）;disp（PRF/Ba）
disp（‘慢時間域采樣點數‘）;disp（Nslow）
disp（‘距離分辨率‘）;disp（DY）
disp（‘方位分辨率‘）;disp（DX）?????
disp（‘合成孔徑長度‘）;disp（Lsar）?????
disp（‘目標位置【（0-5

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????4856??2010-03-13?07:53??movingtarget\dian.m

?????文件????????696??2010-03-14?19:35??movingtarget\dianmian.m

?????文件????????203??2010-03-13?09:51??movingtarget\dmstap.m

?????文件?????????78??2010-03-08?09:44??movingtarget\ftx.m

?????文件?????????79??2010-03-08?09:44??movingtarget\fty.m

?????文件?????????81??2010-03-08?09:44??movingtarget\iftx.m

?????文件?????????84??2010-03-08?09:44??movingtarget\ifty.m

?????文件???????5685??2010-03-14?19:30??movingtarget\jdian.m

?????文件???????5558??2010-03-13?08:00??movingtarget\mdian.m

?????文件???????5643??2010-03-14?19:35??movingtarget\mdian1.m

?????文件???????3686??2010-03-14?19:03??movingtarget\mmian.m

?????文件???????5224??2010-06-14?21:37??movingtarget\tdian.m

?????目錄??????????0??2012-10-03?18:49??movingtarget

-----------?---------??----------?-----??----

????????????????31873????????????????????13