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用Welch法进行功率谱估计
- 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
CMA8PSK
- 此例matlab是用cma算法均衡8PSK调制信号,代码清晰无误,仿真图效果很好。-In this case matlab is using the the cma algorithm balanced 8PSK modulation signal, the code is clear and unmistakable, the simulation map works well.
synchronous
- 基于matlab的同步发电机模型,得到了清晰的同步发电机运行情况下的电压波形图。-Matlab-based synchronous generator model, a clear case of synchronous generators running voltage waveform graph.
Stochastic-Process
- 随机过程基础课程,包含泊松过程、马尔可夫链、鞅等经典方法,清晰详细,有案例讲解-Stochastic Processes basic courses, including Poisson process, Markov chain, martingale and other classical methods, clear and detailed, there is case to explain
Neural-Networks
- 神经网络的MATLAB案例实现,整个实现过程讲解非常明晰,值得学习一下-Case MATLAB neural network to achieve, on the very clear throughout the implementation process, worth of learning
SOM_BP
- SOM神经网络的数据分类,案例为柴油机故障诊断,代码思路清晰易于修改-Data classification SOM neural networks, case for the diesel engine fault diagnosis, easy to modify the code clear thinking
RBF
- 本例用RBF网络拟合未知函数,预先设定一个非线性函数,假定函数解析式不清楚的情况下,随机产生x1,x2和由这两个变量按上式得出的y。-In this case, using RBF network fitting of the unknown function preset a nonlinear function, assume that function under the condition of analytic expression is not clear, randomly gen
灰色预测
- 1.灰色预测领域的权威书籍,详细介绍灰色预测模型。 2.经典灰色预测案例,并附有matlab操作程序,简单明了。(1., gray prediction authority books, detailed descr iption of the gray forecasting model. 2. classic gray forecasting case, and accompanied by MATLAB operating procedures, simple and