Modalresponse

denoise In BayesShrink[5] we determine the threshold for each subband assuming a Generalized Gaussian Distribution(GGD) . The GGD is given by GG¾ X ¯ (x) = C(¾ X ¯ )exp¡ [® (¾ X ¯ )jxj]¯ (6) ¡ 1 < x < 1 ¯ > 0, where ® (¾ X ¯ ) = ¾ ¡ 1 X [ ¡ (3=¯ ) ¡ (1=¯ ) ]1=2 and C(¾ X ¯ ) = ¯ ¢ ® (¾ X ¯ ) 2¡ ( 1 ¯ ) and ¡ (t) = R1 0 e¡ uut¡ 1du. The parameter ¾ X is the standard deviation and ¯ is the shape parameter It has been observed[5] that with a shape parameter ¯ ranging from 0.5 to 1, we can describe the the distribution of coefficients in a subband for a large set of natural images.Assuming such a distribution for the wavelet coefficients, we empirically estimate ¯ and ¾ X for each subband and try to find the threshold T which minimizes the Bayesian Risk, i.e, the expected value of the mean square error.

Reliable authorization and authentication are becoming necessary for many everyday applications such as boarding an aircraft, performing financial transaction, logging to a secure system etc. Identity verification becomes a challenging task when it has to be automated with high accuracy and with low probability of break-ins and low rates of false match. Moreover, person verification is not a new problem and society had created three traditional modes of designation: 1. Possessions: Physical possessions such as keys, passports and smart cards. 2. Knowledge: Pieces of information those are secret and known only to the right person such as PIN, passwords, user names etc. 3. Biometrics: Physiological and behavioral characteristics of individuals that distinguish one person from the others. These characteristics are different in each person.

是梳状滤波器，简单整系数的50Hz工频梳状滤波器，吉布斯振荡非常小。(The comb filter simple integer coefficients 50Hz frequency comb filter, Gibbs oscillations very small.)

本代码实现了PPM-TH-UWB系统发生器的matlab仿真。(This code implements the PPM-TH-UWB system generator matlab simulation.)

leach算法和leach改进的算法对比默契改进算法为对阈值的改变(leach algorithm and improved algorithm leach algorithm for Bi Moqi threshold for change)

说明：  维纳滤波matlab源代码，无错，可以运行结果，有与fir滤波方法对比结果。(program of wiener filter used in image postprocessing,which can be runned with an expected result.)

it is about the matlab volume code.(volume)

基于MATLAB的捷联惯导轨迹发生器，以及SINS解算程序(SINS based on MATLAB trajectory generator and solver SINS)

用于现代信号分析与处理课程，作用为图像的压缩(For modern signal analysis and processing programs, the role of the compressed image)

主成分分析 还不错的程序 有需要的可以试试(pca for zhe value)