juzhen

根据直扩原理，首先有随机数发生器产生一系列二进制信息数据（+1，-1），每个信息比特重复Lc次，Lc对应每个信息比特所包含的伪码片数，包含每一比特Lc次重复的序列与另一个随机数发生器产生的PN序列c(n)相乘。然后在该序列上叠加高斯白噪声和形式为i(n)=Acosw0n余弦干扰下次信号，切余弦干扰信号的振幅满足条件A<Lc。在解调器中进行与PN序列的互相关运算，并且将组成各信息比特的Lc个样本进行求和。加法器的输出送到判决器，将信号与门限值0进行比较，确定传送的数据为+1还是-1，计数器用来记录判决器的错判数目。(According to the principle, first some straight expansion random number generator produces a series of binary data (+ 1-1), each information bit repetitive Lc times, Lc for each information bit contains PN code piece count, embraces each bit Lc times repeated sequence and another random number generator produces PN sequence c (n) multiplication. Then in the sequence superimposed on gaussian white noise and forms as I (n) = Acosw0n cosine interference next time signal, cut cosine interfering signal amplitude satisfy conditions A < Lc. In the modem with the cross-correlation operation PN sequence, and the information will comprise the Lc a sample bits peace. The output of the adder judgment device, will signal to compare with threshold 0 data transmitted, determine for+ 1 or-1, counter is used to record the number victimised judgment. )

braking of induction motor.

内含：1）在同一纬度下不同斜距时比较重力简易算法和拉普拉斯算法的误差曲线；2）在同一斜距不同纬度下两种重力算法的误差曲线。内含各自的运行程序。(Contains: 1) under the same latitude different slant distance compare gravity simple algorithm and error curve of the Laplace algorithm 2) in the same slope distance under different latitude error curves of two kinds of gravity algorithm. With their own to run the program.)

基于rssi的室内定位算法，NN,KNN,WKNN及贝叶斯算法的对比。(The indoor location algorithm based on RSSI is compared with NN, KNN, WKNN and Bayes algorithm.)

说明：  一个完整的OFDM通信系统，采用16QAM调制，设置不同的信噪比，得到误码率(A complete OFDM communication system adopts 16QAM modulation, sets different SNR, and gets bit error rate)

ekf的程序，这里是将其应用于目标跟踪方面(ekf s programme ,it s fitted to track traget.)

说明：  数字图像融合的程序，包括加权平均.HIS和和PCA等算法(Digital image fusion procedures, including the weighted average. HIS and other algorithms and PCA)

time series annalys. Trend decomposyshion. Season index decomposition

说明：  一种自适应滑模控制器的MATLAB设计程序(An adaptive sliding mode controller design of the MATLAB program)

Matlab实现的全相位频谱分析，可以自行设定点数和输入序列。结果包括频谱图和与普通fft的对比(Matlab to achieve all-phase spectral analysis, can draw up a point and input sequence. The results include the spectral figure and the comparison with ordinary fft)