ef01

数字信号发生器，可以产生各种常用波形，如三角函数，正弦函数，白噪声等。是基于matlab的虚拟仪器。(Digital signal generator, can produce a variety of commonly used waveforms, such as trigonometric functions, the sine function, white noise or the like. Virtual instrument based on matlab.)

波数域算法又称为距离徙动算法（Range Migration Algorithm，RMA）或-算法，由Cafforio等提出。该算法分析距离处理后信号的二维频谱，通过二维频域匹配滤波进行相位补偿，在完成方位聚焦的同时完全校正距离徙动。由于其中的Stolt变换能克服SAR信号中距离徙动和SRC对斜距的依赖，因此波数域算法是一种理想的成像算法，尤其在处理大斜视角和长合成孔径的SAR数据时。但Stolt变换需要插值，降低了处理效率并引入额外的误差。(The wavenumber domain Algorithm is also called Range Migration Algorithm (RMA) or -algorithm, which is proposed by Cafforio et al.The algorithm analyzes the 2-d spectrum of the signal after the distance processing, carries out phase compensation through the 2-d frequency domain matching filter, and completely corrects the distance migration while completing the azimuth focusing.Because the Stolt transform can overcome the SAR signal range cell migration and SRC dependence on oblique distance, thus wavenumber domain algorithm is an ideal imaging algorithm, especially when dealing with large squint Angle and long synthetic aperture of SAR data.But Stolt transformation requires interpolation, reduces processing efficiency and introduces additional errors.)

code for origenal transformation

color tracking green n red

斯坦福大学公开课第三课中涉及的局部加权线性回归，用matlab实现了在不同带宽下的对比(Stanford open class third lesson involved locally weighted linear regression, using matlab to achieve a comparison of different bandwidths)

图像demasaicing 方法， 两种一种是线性，一种是nearest(two ways to demasaicing, nearest and linear, the image is bayer )

PSOt is different of PSOrt, because you can choose differents mode of convergence

Only coding parameters of sound generation model • LPC is an example where parameters are a1, a2, …ak , e(n) • Music instrument parameters: pitch, loudness, timbre, …Frequency Masking: If a tone of a certain frequency and amplitude is present, then other tones or noise of similar frequency cannot be heard by the human ear • the louder tone (masker) makes the softer tone The Masking Threshold is used by the audio encoder to determine the maximum allowable quantization noise at each frequency to minimize noise perceptibility: remove parts of signal that we cannot perceive

数学建模迪卡斯特拉算法，最短路问题图论的应用(Mathematical modeling Ducasse Terra algorithm)

国外经典教材DUBA编写的《模式分类》课后习题源代码，matlab编程实现(Foreign classic textbook DUBA prepared, " Pattern Classification" Homework source code, matlab programming)