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说明：  《ofdm关键技术与应用》（汪裕民）一书中第10章有详细说明，在MATLAB上跑过，没有问题(&quot Ofdm technology and application&quot (Wang Yumin) Chapter 10 of the book are detailed in MATLAB, Running, no problem)

说明：  捷联惯导 四元数法 进行导航姿态解算 程序内有详细注解(SINS quaternion attitude solver for navigation with detailed comments)

Algorithm to find the melody of a polyphonic music signals.

l1-magic and leach protocol

File 1: THIS CODE IS USED TO DRAW THE PUMP CURVES AT DIFFERENT PUMP SPEED 1: PUMP CURVE 2: EFFICIENCY CURVE 3: BREAK HORSEPOWER CURVE 4: KW-INPUT CURVE File 2: THIS CODE IS FOR APPLYING THE WAY OF CALCULATING THE EFFICIENCY, POWER AND KW-INPUT FOR VARIABLE SPEED PUMP AT A GIVEN DESIRED HEAD AND DESIRED FLOW AS SHOWN IN THE PAPER TITLED: " how to calculate the pump efficiency and power for variable speed pump" File 3: this code is to correct the use of affinity law by shifting the curve to intersect with the system-curve at the desired flow as shown in the paper titled: "The Correct Method of Calculating Energy Savings to Justify Adjustable-Frequency Drives on Pumps"

source for simulation of a moving ball on an inclined plane by the method of impact.

time series analysis tools

一些有用的时间序列分析相关程序（matlab)(Time Series program)

数字基带传输的全部matlab仿真文件，测试无误，升余弦滚降滤波器(Digital baseband transmission matlab simulation of all documents, test passed, raised cosine roll-off filter)

说明：  非常全的GPS-MATLAB源代码，其中有很多的小程序，便于读者使用(Very full of GPS-MATLAB source code, many of them small program, easy to readers to use)