fft

周期法计算循环卷积 过程图解 只能计算低位的周期数列(Cycle method to calculate the circular convolution process diagrams can only calculate the low number of cycles column)

三相短路计算程序 模拟发电机机端三相短路仿真(san xiang duan lu)

some matlab example for beginers

本程序主要是在图像处理应用关于计算图像的欧拉数(this procedure is mainly in image processing applications for the calculation of the Euler number Image)

说明：  基础隔震结构简化成串联多质点系计算动力响应，隔震支座采用Bouc-wen模型模拟，用Newmark逐步积分法计算。(Base isolation structure is simplified into a series multi-particle system dynamic response, isolators using Bouc-wen model simulation, calculated using the Newmark direct integration scheme.)

说明：  matlab常用函数和规则的例程，对初学者很有帮助。包括编程过程当中很常用到的各种函数以及规则！(Matlab commonly used functions and routines rules, useful for beginners. Includes programming process is very common to the various functions and the rules!)

经验模态分解法程序emd，运行准确，适合进行hilbert-huang变换的人员使用(a precess of emd)

this code implementation ladar.

p-q检测算法，有效的检测谐波电流，可用于APF实验仿真(P- q detection algorithm, which can effectively detect harmonic current)

等间距线性阵列，阵元数M=8，阵元间距d= λ /2，等幅加权，目标方位φr =0°。产生空间白噪声矢量（复高斯分布）。 设阵列信号矢量元素s(m)=exp[j mψr]，其信号幅度为1，该阵元接收机附加的高斯噪声为n(m)=nmr+jnmi，其中实虚部均为独立同分布N(0, σ2)的高斯随机数，则该通道合成信号x(m)=s(m) + n(m)，其中信噪比为： SNR = 10 lg[1/(2σ2)] = – 3 – 10 lg(σ2) (dB) (The spacing of the linear array, and the array element number M = 8, the array element spacing d = λ/2, equal amplitude weighted target azimuth φR = 0. Space generated white noise vector (complex Gaussian distribution). Let array signal vector elements s (m) = exp [j mψr], the signal amplitude, the element receiver additional Gaussian noise n (m) = nmr+jnmi which the real and imaginary parts are independent and identically distributed N ( Gaussian random numbers of 0, σ2), the channel the synthesis signal x (m) = s (m) the PPLS n (m), where SNR is: SNR = 10 lg [1/(2σ2)] =- 3- 10 lg (σ2) (dB))