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    文件類型: .rar
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    發(fā)布日期: 2021-06-01
  • 語言: Matlab
  • 標(biāo)簽: 模型仿真??

資源簡介

為一海雜波模型仿真MATLAB程序,用于仿真海雜波模型,參數(shù)設(shè)置豐富!

資源截圖

代碼片段和文件信息

function?[WB?SumOfAll?fd?FirstOrder]=AllOrder(f0VpQQNQ0Reso)
%海浪散射系數(shù)仿真程序?個(gè)參數(shù)下面有說明?可以計(jì)算單基地雷達(dá)和雙基地雷達(dá)的海浪散射系數(shù)

DopVal=zeros(1401);
%?f0=15;?Vp=15;?Q=0*pi/180;QN=90*pi/180.0;Q0=0*pi/180.0;Reso=2000;
g=9.8;
A=4/(3*pi);
s=4;
K0=2*pi*f0/300;??%//無線電波長
WB=sqrt(2*g*K0*cos(Q0));?%?//Bragg?基頻

%/*?????參數(shù)聲明??????????????????????????????????????????
%?Vp---輸入風(fēng)速19.5(m/s)
%?f0---雷達(dá)操作頻率
%?K0---雷達(dá)波數(shù)
%?K1---一階海洋波數(shù)
%?K2---二階海洋波數(shù)
%?Wd---多普勒頻率
%?WB---Bragg多普勒頻率
%?Q?---風(fēng)向(角度)
%?QN---散射橢圓法線矢量方向
%?Q0---半雙基地角
%?Q1---一階海洋波方向
%?Q2---二階海洋波方向
%?s?---擴(kuò)展因子?*/????

%? ??//計(jì)算二階散射截面積
%? ??//-3WBSingular1=0;
Singular2=0;
Singular3=0;
Singular4=0;
Singular5=0;
Singular6=0;
Singular7=0;
Singular8=0;
Singular9=0;
Singular10=0;
for?N=1:160
????Wd=(-5.0+0.025*(N-1))*WB;?
????if(Wd+sqrt(2.0)*WB>0)?%//?Wd>=-sqrt(2)*WB部分
????????if(N==145)?
????????????Wd=-sqrt(2)*WB;?%//?奇異值
????????????Singular1=N;
????????end
????????if(abs(Wd+(2^0.75)*sqrt(((1-sin(Q0))^0.5)/cos(Q0))*WB)<=0.0125*WB)
????????????Wd=-(2^0.75)*sqrt(((1-sin(Q0))^0.5)/cos(Q0))*WB;
????????????Singular2=N;
????????????%//電場耦合系數(shù)產(chǎn)生的奇異值
????????end
????????DopVal(N)=dif(QN-piQN11WdWBf0VpQQNQ0ResoK0)+dif(QNQN+pi11WdWBf0VpQQNQ0ResoK0);
????else??%//??Wd<-sqrt(2)WB
????????if(abs(Wd+(2^0.75)*sqrt(((1-sin(Q0))^0.5)/cos(Q0))*WB)<=0.0125*WB)
????????????Wd=-(2^0.75)*sqrt(((1-sin(Q0))^0.5)/cos(Q0))*WB;
????????????Singular3=N;
????????????%//電場耦合系數(shù)產(chǎn)生的奇異值
????????end
????????if(abs(Wd+(2^0.75)*sqrt(((1+sin(Q0))^0.5)/cos(Q0))*WB)<=0.0125*WB)
????????????Wd=-(2^0.75)*sqrt(((1+sin(Q0))^0.5)/cos(Q0))*WB;
????????????Singular4=N;
????????end
????????DopVal(N)=dif(QN-piQN-acos(2*(WB/Wd)*(WB/Wd))11WdWBf0VpQQNQ0ResoK0)+dif(QN+acos(2*(WB/Wd)*(WB/Wd))QN+pi11WdWBf0VpQQNQ0ResoK0);
????end
end
%?//計(jì)算-WBfor?N=162:200
????Wd=(-5+0.025*(N-1))*WB;
????if(abs(Wd+(2^0.75)*sqrt(((1-sin(Q0))^0.5)/cos(Q0))*WB)<=0.0125*WB)
????????Wd=-(2^0.75)*sqrt(((1-sin(Q0))^0.5)/cos(Q0))*WB;?
????????Singular5=N;
????end
????DopVal(N)=dif(QN-piQN-11WdWBf0VpQQNQ0ResoK0)+dif(QNQN+pi-11WdWBf0VpQQNQ0ResoK0);
end
N=N+1;
if(N==201)??%?//Wd=0
????Wd=(-5+0.025*(N-1))*WB;??
????DopVal(N)=dif(QN-0.5*piQN+0.5*pi-11WdWBf0VpQQNQ0ResoK0);?
end
for?N=202:240
????Wd=(-5+0.025*(N-1))*WB;
????if(abs(Wd-(2^0.75)*sqrt(((1-sin(Q0))^0.5)/cos(Q0))*WB)<=0.0125*WB)
????????Wd=(2^0.75)*sqrt(((1-sin(Q0))^0.5)/cos(Q0))*WB;
????????Singular6=N;
????????%//電場耦合系數(shù)產(chǎn)生的奇異值
????end
????DopVal(N)=dif(QN-piQN1-1WdWBf0VpQQNQ0ResoK0)+dif(QNQN+pi1-1WdWBf0VpQQNQ0ResoK0);
????%//?printf(“%d%e\n“NDopVal[N]);
end
%//計(jì)算WBfor?N=242:401
????Wd=(-5+0.025*(N-1))*WB;
????if(Wd-sqrt(2.0)*WB<0)?%//?Wd>=sqrt(2)*WB部分
????????if(N==257)
????????????Wd=sqrt(2)*WB;?%//?奇異值
????????????Singular7=N;
????????end
????????if(abs(Wd-(2^0.75)*sqrt(((1-sin(Q0))^0.5)/cos(Q0))*WB)<=0.0125*WB

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件??????12318??2008-11-09?09:56??AllOrder.m

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

????????????????12318????????????????????1


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