mssnr

本程序能够计算两个信号的频域相干函数和两个信号的互功率谱。(This procedure is able to calculate the two signals in the frequency domain coherence function and the two signals cross-power spectrum.)

这编程是关于三维图形的仿真，X.Y都是有取值范围的，图形都是有各种颜色(This program is about three-dimensional graphics simulation, XY are all the range, the graphics are a variety of colors)

说明：  利用matlab编写的基于计算机声卡的虚拟仪器，含信号发生器、示波器和频率计，并利用matlab中guide可视化编程实现了界面操作。(Matlab prepared using computer sound card based virtual instrument, with the signal generator, oscilloscope and frequency meter, and use visual guide matlab programming in the interface operation.)

chirp signal radar signal processing.doppler filtering imaging

小波分析因其在处理非平稳信号中的独特优势而成为信号处理中的一个重要研究方向。如今随着小波理论体系的不断完善，小波以其时频局部化特性与多尺度特性在图像边缘检测领域中倍受青睐。(Wavelet analysis of nonstationary signal processing because of its unique advantage in signal processing and become an important research direction in. Now with the wavelet theory system ceaseless and perfect, the time-frequency localization characteristic of wavelet based and multi scale characteristics in the image edge detection is very popular.)

1) 以身高为例，画出男女生身高的直方图并做对比； 2) 采用最大似然估计方法，求男女生身高以及体重分布的参数； 3) 采用贝叶斯估计方法，求男女生身高以及体重分布的参数（假定方差已知，作业请注明自己选定的一些参数情况）； 4) 采用最小错误率贝叶斯决策，画出类别判定的决策面。并判断某样本的身高体重分别为(160,45)时应该属于男生还是女生？为(178,70)时呢？(1) taking height as an example, draw the histogram of male and female students and compare them; 2) the maximum likelihood estimation method was used to calculate the height and weight distribution parameters of male and female students; 3) using Bayesian estimation method to find the parameters of height and weight distribution of male and female students (assuming the variance is known, please indicate some of the parameters selected by the job); 4) using the minimum error rate Bayes decision, draw the decision surface of category decision. And determine the height and weight of a sample respectively (160,45), should belong to the boys or girls? What about (178,70)?)

该程序为qpsk的完整仿真程序。需要的可以下了看下 可以运行(qpsk the procedure for the complete simulation program. They may need to run the facie)

最小二乘算法的实例，适合于初学者下载，附有详细注释(Examples of least-squares algorithm, suitable for beginners download, with detailed notes)

设计一维纳滤波器。 （1）产生三组观测数据，首先根据s(n)=as(n-1)+w(n)产生信号s(n)，将其加噪(信噪比分别为20dB，10dB，6dB)，得到观测数据x1(n)，x2(n)，x3(n)。 （2）估计xi(n)，i=1,2,3的AR模型参数。假设信号长度为L，AR模型阶数为N，分析实验结果，并讨论改变L，N对实验结果的影响。 (Design a Wiener filter. (1) generate three sets of observations data, first according to s (n) = as (n-1)+w (n) to generate a signal s (n), which add noise (SNR respectively 20dB, 10dB, 6dB), obtained observation data x1 (n), x2 (n), x3 (n). (2) estimate xi (n), i = AR model parameters 1,2,3. Assuming the signal length L, AR model of order N, analysis of experimental results and discuss changes affect L, N of the experimental results.)

说明：  运用Newmark-β法进行单自由度体系的时程响应分析(Time history response analysis of single degree of freedom system by Newmark(time domain) method)