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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)
- 2005-07-12 11:18:13下载
- 积分:1
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dijkstra
Dijkstra最短路算法通用Matlab程序(Dijkstra)
- 2020-10-13 18:57:31下载
- 积分:1
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plot_MIMO
自适应波束成形室内模型matlab的mimo技术仿真(Adaptive beam forming model Matlab MIMO technology simulation
)
- 2012-05-03 13:54:32下载
- 积分:1
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amdf
说明: 语音识别全过程的matlab程序,运行测试能出结果,希望对你们有用,实在没点数才把自己压箱底的东西拿出来,呜呜(The whole process of speech recognition matlab program, run the test to the result, I hope helpful for you, only then it did not point out what their own bottom pressure, the hum)
- 2011-03-08 11:27:22下载
- 积分:1
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自方幂数问题
说明: matlab,对解决学习中遇到的实际问题会有很大的帮助(Matlab, learning to solve practical problems encountered in will be a big help)
- 2005-12-08 14:14:17下载
- 积分:1
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Simulink
simlingk仿真与编程,如何使用simlingk,以及一些工程案例(simlingk simulation and programming, how to use simlingk, and some Projects)
- 2013-08-21 15:35:29下载
- 积分:1
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abc_dqo
This model gives you the transformation of abc components of voltage and current into dqo components which is mostly used in power systems and power electronics
- 2014-10-02 10:49:46下载
- 积分:1
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UltraEasyFBMC
这是一个MATLAB源程序,实现的是一个简单的FBMC系统的调制解调(communication FBMC)
- 2015-03-15 17:28:15下载
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5
说明: ofdm的同步方法的参考文献,讲述了各种不同的参考文献的方法。(The synchronization method ofdm references about a variety of different methods References.)
- 2009-08-11 17:02:36下载
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SVPWM
用matlab/simulink搭建的基于SVPWM的交流调速系统。(Using matlab/simulink to build communication-based SVPWM control system.)
- 2011-06-11 10:24:18下载
- 积分:1