%%?該代碼為基于BP神經網絡的預測算法
%function?[errorsumee]=BP_fit_prediction（hid_num）
%%?清空環境變量
%?clc
%?clear

%%?訓練數據預測數據提取及歸一化
%下載輸入輸出數據
load?hhh1

%從1到1000間隨機排序
%?rng（‘default‘）;
%?rng（2）;
%?k=rand（11000）;
%?[mn]=sort（k）;

%找出訓練數據和預測數據
input_train=time_estimate（1:900:）‘;
output_train=time_estimate1（1:900:）‘;
input_test=time_estimate（901:1000:）‘;
output_test=time_estimate1（901:1000:）‘;

%選連樣本輸入輸出數據歸一化
[inputninputps]=mapminmax（input_train）;
[outputnoutputps]=mapminmax（output_train）;

%%?BP網絡訓練
%?%初始化網絡結構
%net=newff（inputnoutputn[10]{‘tansig‘‘purelin‘}‘trainlm‘）;
hid_num=[7];????%若為多層隱含層，則為行向量
net=feedforwardnet（hid_num‘trainlm‘）;
net.trainParam.epochs=100;??%最大迭代次數
net.trainParam.lr=0.1;??????%學習率
net.trainParam.goal=0.00004;??%均方誤差mse的閾值

%網絡訓練
[nettr]=train（netinputnoutputn）;

%%?BP

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2014-08-02?18:40??TOA_TR_RE\
?????文件???????39327??2014-06-15?19:57??TOA_TR_RE\3d.mat
?????文件???????10466??2014-05-10?09:10??TOA_TR_RE\3d_x_y.mat
?????文件????????2235??2014-06-21?12:32??TOA_TR_RE\BP_fit_prediction.m
?????文件?????????870??2014-06-20?20:22??TOA_TR_RE\CRLB.m
?????文件?????????127??2014-08-02?18:40??TOA_TR_RE\distn.m
?????文件?????????214??2014-06-20?21:04??TOA_TR_RE\dist_t.m
?????文件???????50851??2014-06-02?18:18??TOA_TR_RE\hhh.mat
?????文件???????88383??2014-06-02?18:25??TOA_TR_RE\hhh1.mat
?????文件???????16644??2014-04-28?20:09??TOA_TR_RE\h_1.mat
?????文件???????14073??2014-04-27?10:52??TOA_TR_RE\h_2.mat
?????文件???????11745??2014-05-13?15:26??TOA_TR_RE\kalman.mat
?????文件????????2995??2014-06-21?11:23??TOA_TR_RE\kalmanflr.m
?????文件?????????993??2014-04-18?22:44??TOA_TR_RE\monocycle.m
?????文件????????2023??2014-06-20?20:30??TOA_TR_RE\Node_Error.m
?????文件?????????321??2014-04-27?08:28??TOA_TR_RE\RMS.m
?????文件?????????487??2014-04-22?20:18??TOA_TR_RE\tdoa.m
?????文件????????8270??2014-05-12?11:11??TOA_TR_RE\TDOA_main.m
?????文件??????159086??2014-06-20?20:06??TOA_TR_RE\tdoa_nn.mat
?????文件????????1615??2014-06-20?21:07??TOA_TR_RE\toa.m
?????文件?????????511??2014-06-20?21:09??TOA_TR_RE\toa1.m
?????文件????????8634??2014-06-20?21:24??TOA_TR_RE\TOA_3D_main.m
?????文件???????32691??2014-04-27?19:03??TOA_TR_RE\toa_error1.mat
?????文件???????37571??2014-04-27?17:37??TOA_TR_RE\toa_error2.mat
?????文件????????1238??2014-05-12?17:07??TOA_TR_RE\TOA_LMS.m
?????文件????????7282??2014-06-21?12:34??TOA_TR_RE\TOA_main.m
?????文件????????1967??2014-04-19?08:28??TOA_TR_RE\uwb_channel.m
?????文件????????8141??2014-05-26?16:35??TOA_TR_RE\uwb_sv_15_4a.m
?????文件????????1153??2014-04-19?08:54??TOA_TR_RE\uwb_sv_cnvrt_ct_15_4a.m
?????文件?????????854??2014-04-19?08:55??TOA_TR_RE\uwb_sv_freq_depend_ct_15_4a.m
?????文件????????4954??2014-04-19?08:55??TOA_TR_RE\uwb_sv_model_ct_15_4a.m
............此處省略4個文件信息