-
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
-
8
说明： 《精通MTLAB最优化计算》第8章 约束优化问题
源码(" The most proficient MTLAB Optimization" Chapter 8 source constrained optimization problems)
- 2011-04-18 21:47:27下载
- 积分：1
-
fit
D:matlab
mmfit.rar插值(D : Matlab nmm fit.rar interpolation)
- 2006-09-06 18:58:01下载
- 积分：1
-
devrygtion
用MATLAB编写的混沌序列图像加密程序,加密密钥跟解密密钥(MATLAB prepared by the chaotic sequence image encryption program, encryption key and decryption key)
- 2017-08-13 20:36:28下载
- 积分：1
-
MatlabWienerFilterWaveltDomain
matlab code for wavelet transform
- 2010-09-28 13:31:53下载
- 积分：1
-
SOAP_Excel_Template
Matlab microgrid in the plataforms as matlab interface
- 2015-02-12 23:30:56下载
- 积分：1
-
MakeSoft
This function converts the input binary to soft bits and logs to file
- 2014-02-03 14:32:35下载
- 积分：1
-
app2
this is real fuzzy matlab code is hard2
- 2015-04-10 21:22:22下载
- 积分：1
-
classifier
無監督分類方法，可以對一堆數值自動的歸類(Unsupervised classification methods, can be a pile of automatic classification of numerical)
- 2007-10-24 17:17:35下载
- 积分：1
-
Mimo_system
Arbitrary transmitting antenna, receiving antenna arbitrary STBC-MIMO-OFDM the MATLAB program, including the integrity of PSK modulation, STBC encoding, such as channel estimation.
- 2009-12-24 09:27:38下载
- 积分：1
