fft

双线性变换的特点是不产生频率混叠失真，是一种很好的设计方法(Bilinear transform the feature is not to produce the frequency aliasing distortion is a good design method)

The exception that is thrown when an error occurs while a {@code Certificate} is being encoded.

image comparison and degradation

说明：  导言 - 描述MATLAB系统的组成。 开发环境- 介绍MATLAB的开发环境，包括有关工具和MATLAB桌面的信息。 矩阵操作- 介绍如何用MATLAB生成矩阵以及用矩阵进行数学运算。 作图- 介绍MATLAB的作图能力，包括有关作图数据，给图表加注释，以及图像的使用。 用MATLAB编程 - 描述如何用MATLAB语言编写手稿和函数,以及利用数据结构，例如单元数组和多元数组。 (Introduction- describes the MATLAB system. Development Environment- Introduction to MATLAB development environment, including the MATLAB desktop tools and information. Matrix Operation- describes how to use MATLAB to generate the matrix as well as the use of matrix mathematics. Mapping- Introduction to MATLAB' s plot, including the mapping of the data, add notes to the chart, as well as the use of images. Programming with MATLAB- MATLAB language to describe how to prepare manuscripts and function, and the use of data structures, such as arrays and multi-unit array.)

对一帧图像进行信噪比等因素的检测，比较实用(Image on a detection signal to noise ratio and other factors, more practical)

无限冲击响应滤波器 (IIR) 实现，涉及一个Butterworth低通滤波器，设计指标为：在通带内频率低于0.2π时，最大衰减小于1dB；在阻带内[0.3π, π]频率区间上，最小衰减要大于15dB (An infinite impulse response filter (IIR) implementation, involves a Butterworth low-pass filter design specifications as follows: in the passband frequencies below 0.2π, the maximum attenuation is less than 1dB in the stopband [0.3π, π] frequency interval , the minimum attenuation greater than 15dB )

lyapunov 指数计算方法 MATLAB程序代码(lyapunov matlab code)

matlab code for Simplified Gradient Descent Optimization

进场目标定位的多重信号分类算法二维算法，平面均匀线阵中的实现(Approach targeting multiple signal classification algorithm for two-dimensional algorithm, plane ULA Realization)

antenna　pic mpbat 初值处理(antenna　pic chengxu chuli )