dat2xml

卷积码的性能检测程序，适用于信道编码盲检测。卷积码的盲检测(Performance test of convolution code program, suitable for channel coding blind detection.Blind detection of convolution code)

地球物理学一维速度结构反演程序Velest,win版(a program for inverting the minimum 1-D velocity model in Geophysis.)

根据纬度经度信息 准确画出学术论文需要的地理图 包括海洋 山脉等(According to latitude and longitude information accurately draw the necessary papers including marine mountains and other geographic map)

说明：  qpsk调制解调的生成程序，用MATLAB语言实现(keying modulation and demodulation production procedures, using Matlab)

qpsk的方波滤波，利用matlab编写M文件，调试成功，并描绘滤波图形。(the qpsk square wave filter using Matlab prepared M-file debugging success, and a description of the filter graphics.)

提高数据传输效率，降低误码率是信道编码的任务。信道编码的本质是增加通信的可靠性。但信道编码会使有用的信息数据传输减少，信道编码的过程是在源数据码流中加插一些码元，从而达到在接收端进行判错和纠错的目的(Improve the efficiency of data transmission, reduce the bit error rate is the channel coding task. The essence of channel coding is to increase the reliability of communication. But the channel coding can make data transmission of useful information is reduced, the channel coding process is to add some symbols in the source data stream, so as to achieve the purpose of erroneous judgment and correction at the receiver)

an implementation of best fit in matlab

说明：  这本书用matlab仿真了数字通信原理中的各部分，很有参考价值(This book matlab simulation of digital communication with the various parts of the principle, a good reference)

用matlab仿真轴承故障信号构造轴承故障的仿真信号，其中轴承的固有频率fn=3000Hz , 位移常数y0=5, 阻尼系数ξ＝0.1, 冲击故障发生的周期为0.01s，采样频率fs=20KHz, 采样点数N=4096。要求：根据上述条件构造轴承故障的仿真信号，画出其时域波形及频谱图。(Matlab simulation bearing fault signal)

永磁同步电机滑膜变结构无速度传感器控制仿真 可以实现有速度传感器启动运行，和无速度传感器运行。 (Speed sensorless control of permanent magnet synchronous motor synovial variable structure simulation can implement a speed sensor is up and running, and speed sensorless operation. )