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　蔡勒（Zeller）公式：是一个计算星期的公式。 　　随便给一个日期，就能用这个公式推算出是星期几。(Zeller (Zeller) formula: It is a formula for calculating week. Casual to a date, can be calculated using this formula out of the week.)

Chi Twichiya Khassék télécxhargéha darooooooori

说明：  用c语言和matlab编写的、自动生成非结构化三角网格剖分的程序，用于地球物理勘探中的大地电磁、海洋可控源二维正演模拟。(Triangle.m is a MATLAB graphical user interface for creating 2D models and generating fi nite element triangulation grids. Grid generation is accomplished by an external call to the C-code Triangle.c, written by Jonathan Shewchuk at UC Berkeley.)

Converts cartesian coordinates in WGS84_XYZ to geodetic coordinates in WGS84_LLA. Vectorized version.

说明：  实验目的：对带通信号及其低通等效信号进行分析和仿真。 实验内容： 1、参考教材P24面例子，考虑如下带通信号，编写仿真程序实现，得出仿真结果。 （1） 画出该信号和它的幅度谱； （2） 求出该信号的解析信号，并画出它的幅度谱； （3） 求出并画出该信号的包络； （4） 分别假设 和 ，求该信号的低通等效，并画出它的幅度谱。 2、设带通信号为： 通过Matlab编程仿真实现： （1） 画出该信号和他的谱函数（包括幅度和相位） （2） 确定并画出解析信号的谱函数（包括幅度和相位） （3） 画出该信号的包络。 （步骤一，二中，设采样间隔为ts=0.002s）。 (Purpose: To Bandpass and lowpass equivalent signal analysis and simulation. Experiment: 1, reference materials P24 plane example, consider the following bandpass signals, writing simulation program implementation, simulation results obtained. (1) Draw the signal and its amplitude spectrum (2) Find the analytical signal of the signal, and plot its amplitude spectrum (3) Find and draw the envelope of the signal and (4) respectively assumptions and seeking the equivalent lowpass signal and draw its amplitude spectrum. 2, is provided with a communication number: Simulation by Matlab programming: (1) Draw the signal and his spectral function (including amplitude and phase) (2) to identify and draw the analytic signal spectral function (including amplitude and phase) (3) Draw the envelope of the signal. (Step one, two, and set the sampling interval ts = 0.002s).)

chirp信号matlab源代码程序，及信号的时域和频域压缩代码(time domain and frequency domain chirp signal matlab source code program, and signal compression code)

扩展卡尔曼在定位中的一个例子,在滤波分析中很实用(Extended Kalman positioning an example, very useful in filtering analysis)

generation of pn sequences using matlab

基于matlab的三相短路仿真模型，很好的展现出三相短路下得各相波形变化。(Matlab-based simulation model of the three-phase short-circuit, the show was a three-phase short phase waveform changes.)

find probability of 1 vector