timefrequency-analysis-

Structures Theory in Spanish.

通过恢复低秩矩阵得到显著性图，其中详细的运用了mean-shift算法，可以很好的了解mean-shift算法的使用，同时还包含了RPCA算法。(Significantly through the recovery of low rank matrix diagram, which detailed the use of mean-shift algorithm, can be a very good understanding of the use of the mean-shift algorithm, also contains RPCA algorithm.)

对时间序列或者信号进行fft谱分析，可以打开任意数据文件后分析，很方便使用。(FFT transfer of matlab code,it is useful for signal analysis.)

用于提取某一信号的特征参数以实现模式识别的分析。(For extracting the characteristic parameters of a signal in order to achieve pattern recognition analysis.)

useful code in matlab add document

Matlab编写的Hough算法，自己运行过的，可以直接使用...(This is a HOUGH Algorithm in Matlab. It can be run successfully.)

BP neural network regression

File 1: THIS CODE IS USED TO DRAW THE PUMP CURVES AT DIFFERENT PUMP SPEED 1: PUMP CURVE 2: EFFICIENCY CURVE 3: BREAK HORSEPOWER CURVE 4: KW-INPUT CURVE File 2: THIS CODE IS FOR APPLYING THE WAY OF CALCULATING THE EFFICIENCY, POWER AND KW-INPUT FOR VARIABLE SPEED PUMP AT A GIVEN DESIRED HEAD AND DESIRED FLOW AS SHOWN IN THE PAPER TITLED: " how to calculate the pump efficiency and power for variable speed pump" File 3: this code is to correct the use of affinity law by shifting the curve to intersect with the system-curve at the desired flow as shown in the paper titled: "The Correct Method of Calculating Energy Savings to Justify Adjustable-Frequency Drives on Pumps"

天线近场到远场的变换，可实现近场采样数据到远场方向图数据的转换(antenna near field data to far field)

用matlab对chirp信号进行了仿真，表现出了chirp信号的frft的峰值搜索，参数估计(Using matlab for chirp signal simulation, showing a peak search chirp signal frft, the parameter estimates)