13

该电子书用于初学者的学习软件开发和应用,使初学者比较快速的学习MATLAB(book for beginners learning software development and application of)

说明：  Multirate滤波器设计。模拟带通信号频率范围1KHz—1.1KHz，设计一个采样频率8KHz数字频谱分析系统，要求频率分辨率0.1Hz。(Multirate filter design. Analog bandpass signal frequency range 1KHz-1.1KHz, design a sampling frequency of 8KHz digital spectrum analysis system, required frequency resolution of 0.1Hz.)

读取地震数据的重要模块，这里包含了segy与su文件格式的文件读写还有一些基本的设置模块，非常强大和实用。具有独立性的模块，便于携带和复制！(Read seismic data module, file read and write segy su file format, there are some basic settings module is very powerful and practical. The independence of the modules, easy to carry and copy!)

c language guide for the chobo human

清华大学王书宁老师凸优化课程原对偶内点法求解二次规划问题(code using primal dual interior point method to solve the problem of quadratic programming in convex optimization class by Shuning Wang, Tsinghua univ.)

it is useful for my research

adaboost的matlab实现，可进行车辆识别的训练(AdaBoost' s matlab implementation, it can conduct vehicle identification training)

matlab 小波变换 有嵌入水印部分和提取水印部分(watermarking)

自适应信号处理，最终的权值矩阵就是滤波器的系数，学习曲线描述其收敛特性(Adaptive signal processing, the final weight matrix is the filter coefficient, the learning curve to describe the convergence properties)

考虑L的三个不同值：L＝256（3个数据段），L＝128(7个数据段)和L=64（15个数据段）。各自的谱估计图如上图所示。可以明显的看到，加窗明显的减小了频谱上的假谱峰，但也更加进一步平滑了谱峰。所以，对于L＝64的情况，在ω＝0.8π的谱线可以很确定的辨认，但是那两个靠近的谱峰不容易区分。对于L＝128的情况，这种情况提供了在分离和检测间最好的均衡。当然，对于在L＝256时的情况，效果是更好的，能够从谱估计图上明显的分辨出三条谱线的存在以及它们幅度关系的强弱。 除了Welch法外，还可以采用对多个周期图求平均的功率谱估计方法的其他方法如Bartlett法等等，在功率谱估计上也能取得较好的结果。(consider three different values : L = 256 (3 data), L = 128 (7 data) and L = 64 (15 data). Their spectral estimation map as shown in Fig. It is clear to see that increase significantly decreasing window of the spectrum of false peaks, but much more to further smooth the peaks. Therefore, L = 64, in the case = 0.8 spectrum can determine the identification, but that the two peaks around is not easy to distinguish. L = 128 for the situation, which provided the separation and detection among the best balanced. Of course, L = 256 in the case, the effect is better, from the spectral estimation map clearly distinguish between the three lines of the existence and their relationship to the rate of strength. In addition to Welch law, but also can be used to map multiple cycle for the average power)