function?main

Length=20;?
Width=20;??
d=10;??????
Node_number=8;
for?i=1:Node_number?
????Node（i）.x=Width*rand;?
????Node（i）.y=Length*rand;
end

Target.x=Width*rand;
Target.y=Length*rand;

X=[];?
for?i=1:Node_number
????if?DIST（Node（i）Target）<=d
????????X=[X;Node（i）.xNode（i）.y];
????end
end
N=size（X1）;??
Est_Target.x=sum（X（:1））/N;
Est_Target.y=sum（X（:2））/N;?
Error_Dist=DIST（Est_TargetTarget）

figure
hold?on;box?on;axis（[0?20?0?20]）;?
for?i=1:Node_number
????h1=plot（Node（i）.xNode（i）.y‘ko‘‘MarkerFace‘‘g‘‘MarkerSize‘10）;
????text（Node（i）.x+2Node（i）.y[‘Node?‘num2str（i）]）;
end
h2=plot（Target.xTarget.y‘k^‘‘MarkerFace‘‘b‘‘MarkerSize‘10）;
h3=plot（Est_Target.xEst_Target.y‘ks‘‘MarkerFace‘‘r‘‘MarkerSize‘10）;
line（[Target.xEst_Target.x][Target.yEst_Target.y]‘Color‘‘k‘）;
circle（Target.xTarget.yd）;
legend（[h1h2h3]‘Observation?Station‘‘Target?Postion‘‘Estimate?Postion‘）;
xlabel（[‘error=‘num2str（Error_Dist）‘m‘]）;

function?dist=DIST（AB）
dist=sqrt（?（A.x-B.x）^2+（A.y-B.y）^2?）;

function?circle（x0y0r）
sita=0:pi/20:2*pi;
plot（x0+r*cos（sita）y0+r*sin（sita））;

????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????1150??2020-10-02?18:07??chap2\2.1\main.m
?????文件????????1277??2020-10-02?18:07??chap2\2.2\main.m
?????文件????????1553??2020-10-02?18:07??chap2\2.3\main.m
?????文件????????2267??2020-10-02?18:07??chap2\2.4\main.m
?????文件????????1076??2020-10-02?18:07??chap2\2.5\main.m
?????文件????????1250??2020-10-02?18:07??chap2\2.6\2.6.2\main.m
?????文件????????1382??2020-10-02?18:07??chap2\2.6\2.6.3\main.m
?????文件????????1345??2020-10-02?18:07??chap2\2.6\2.6.4\main.m
?????文件????????1258??2020-10-02?18:07??chap2\2.6\2.6.5\main.m