cart2geod

周期图法在雷达信号处理、目标检测、以及目标跟踪中有重要作用。他的主要特点为从噪声中将所需要的周期信号的特征以功率谱的形式表征出来，通过设置合适的阈值可以代表目标。调频信号则是典型的脉冲压缩信号，其扩频特性使得其不易受噪声干扰。(Periodogram in radar signal processing, target detection, and target tracking plays an important role. His main characteristics will be required from the noise characteristics of periodic signals in the form of the power spectrum characterized it, by setting the appropriate threshold may represent the target. FM signal is a typical pulse compression signal, the spreading characteristics make it less susceptible to noise interference.)

这是用matlab软件解决各种一元二次方程(it is use matlab software to solve a unknown equation problems)

Direct Torque Control

matlab函数列表以及功能说明，非常实用(matlab function lists, and feature descriptions, very useful)

一、观察序列频谱，观察信号通过系统后波形与频谱的变化。 系统函数，根据正准型结构（canonical form）编写样本处理算法。 (First, observe the sequence of the spectrum, observing the signal waveform and frequency spectrum through the system after the changes. System function, according to canonical structure (canonical form) the preparation of a sample processing algorithm.)

spfilt.m 文件 是一个重要的滤波子文件

蚂蚁群系统优化算法代码，适用于解决中国邮递员、路径优化等问题((solving tsp with ant colony system)ants colony 2.)

说明：  caiyang 演示采样定理，时域采样，频谱周期延拓(caiyang demonstration sampling theorem, time domain, frequency cycle Extension)

A convolutional code followed by bit-interleaved coded modulation with iterative decoding performance of the use of iteration in decoding

PWM for Buck converter download from mathwork forum