locs.asv

无线传感器节点定位算法

x=[1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2
4
4
4
4
4
4
4
4
4
4
6
6
6
6
6
6
6
6
6
6
8
8
8
8
8
8
8
8
8
8
10
10
10
10
10
10
10
10
10
10
14
14
14
14
14
14
14
14
14
14
18
18
18
18
18
18
18
18
18
18
22
22
22
22
22
22
22
22
22
22
26
26
26
26
26
26
26
26
26
26]';

y=[2.8274
4.4414
5.5987
1.6973
2.9125
3.5015
2.0729
2.7262
2.3675
2.5918
2.7483
2.9373
2.3028
2.2631
2.7691
2.4377
2.3207
3.1187
3.5575
3.3561
2.3923
2.1957
1.6876
1.7629
1.9257
2.1181
1.815
2.1065
1.5774
2.0306
1.4583
1.5795
1.5996
2.0189
1.488
1.2568
1.5672
2.3292
1.5241
1.2114
1.5111
1.4543
1.4007
1.2743
1.5885
1.7314
1.5858
1.042
1.5377
1.3148
1.1569
1.2234
1.1928
1.552
1.1001
1.214
1.3065
1.3255
1.3449
1.1765
1.4506
0.96961
1.1465
0.96952
1.2121
1.1647
1.256
0.98201
1.0395
1.1272
1.1006
0.90313
1.0365
0.93266
0.99214
0.89513
0.74305
1.1075
0.7843
0.87401
0.86302
0.75137
0.91951
0.7448
0.88787
0.82539
0.65547
0.77834
0.8161
0.69909
0.87401
0.7327
0.67972
0.76395
0.84781
0.60291
0.73791
0.67889
0.7
0.68419]';

%plot(x,y,'r*',30,5);
%hold on
%[x,i]=sort(x);
%y=y(i);
%x_i=min(x)+[0:100]/100*(max(x)-min(x));
for i=1:4
%    N=2*i-1;
    N=5;
    [p,s]=polyfit(x,y,N);
    yi=polyval(p,x,s);
    subplot(220+i);
    plot(x,y,'r*')
    hold on
     plot(x,yi,'b-.','LineWidth',1.5);
 end
ylabel('RMS')
xlabel('盲节点个数')
grid