shudu2

四元数c++软件类库，四元数基本运算，非常好用(Quaternion c++ Software library, quaternion basic computing, very easy to use)

本程序比较了LS(最小二乘）和最小均方误差准侧下OFDM信道估计的误码率，给出了LS及MESE实现的源程序，是信道估计初学者的理想参考资料(This procedure compares the LS (least squares) and minimum mean square error of quasi-lateral channel estimation of OFDM bit error rate, given the realization of the LS and the MESE source, channel estimation is the ideal reference for beginners)

基于matlab的数字频带通信系统仿真实验源码及仿真结果波形。(failed to translate)

基于IMCRA单通道噪声估计,基于Omlsa(optimally-modified log-spectral amplitude)语音增强(Isreal Cohen- omlsa : Single Channel OM-LSA with IMCRA noise estimator. Noise psd estimation & Speech enhencement)

进行数据的预处理，标准化和白化，便于数据的后续分析(Data preprocessing, standardization and whitening, facilitate the subsequent analysis of data)

This tutorial starts with a simple conceptual model of an analog Phase-Locked Loop (PLL). Through elaboration it ends at a model of an all digital and fixed-point phase-locked loop. The final model can serve a starting point for code generation (both ANSI C or synthesizable HDL). The step-wise elaboration of the model illustrates how Simulink® forms the basis a model-based design where continuous verification of the model reduces errors.

计算信号里的信噪比的程序，用在数字信号分析中和振动信号处理等方面(The function SNR get the signal to noise (SNR) ratio)

分析传统双向渐进结构优化方法（Bi-directional evolutionary structural optimization，简称BESO）存在不足的基础上，针对性的对数值计算进行了合理的改进。并在此基础上分别对宏观结构、微结构优化、材料/结构一体化等相关问题进行了多尺度、多相复合材料布局及拓扑优化等层次系统地研究(Based on the analysis of the shortcomings of the traditional Bi-directional evolutionary structural optimization (BESO), a reasonable improvement is made for numerical computation. Based on that, multi-level, multi-phase composite material layout and topology optimization are studied systematically.)

很好的书，我找了好长时间才找到的，大家要去看看，肯定会有收获的！(Very good book, I found a good long time to find everyone going to look at, there will certainly be harvested!)

说明：  利用巴特沃斯（Butterworth）低通滤波器对受噪声干扰的图像进行平滑处理(Using Butterworth (Butterworth) low pass filter on the noise interference of the image smoothing)