matlab

此源码是SAR成像中的距离多普勒算法（RDA）的整个仿真过程，相信通过这个仿真有助于理解距离多普勒算法(This source is the distance SAR imaging Doppler algorithm (RDA) of the entire simulation process, I believe that through this simulation helps to understand the range-Doppler algorithm)

The timing_recovery_1.mdl uses Simulinks variable step solver to create a continous time QPSK signal with both carrier and symbol rate errors. This is a relativly straight forward approach, but is computationally expensive. The sescond model, timing_recovery_2Q.mdl uses a purely discrete time approach using the same fractional sample delay approach as does the receiver. This can run much faster.

PWMSound.m processing signal digital

各种周期信号的傅里叶变换，如门信号等，还有些就是常用的信号。(A variety of Fourier transform of periodic signals, such as the gate signals, some signal is commonly used.)

一个matlab中读取excel文件的例子，并且以plot的形式显示(read a document excel example, and to demonstrate the plot)

这个压缩包里面是极化码的SCL方案的仿真 可以设置不同的码长和信噪比 并且可以选择高斯信道和擦除信道这两种信道(This program simulate the performance of SC-list scheme of polar code. You can choose different SNR and code length.You also can choose two type of channels.)

demodulates the FM modulated signal Y at the carrier frequency Fc (Hz). Y and Fc have sample frequency Fs (Hz). FREQDEV is the frequency deviation (Hz) of the modulated signal.

序贯重要性采样，可用于机器学习和各类滤波算法(sequential importance sampling, whitch can be used for machine learning and variants of filtering algorithms)

This is a matlab m-file for simulating a shunt dc machine and plot important curves.

载频为10HZ、采样速率为40HZ的fsk信号的产生和调制(The carrier frequency the 10HZ, sampling rate 40HZ fsk signal generation and modulation)