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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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rfitoolbox
matalb 射频干扰工具箱，德州大学编写,包含脉冲干扰等多种干扰实现形式(matlab radio frequency interference toolbox,written by TEAX Univ.including vary way to implement such as implusing)
- 2013-11-13 09:21:04下载
- 积分：1
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S3EIG
Design and Performance Evaluation
of Subsynchronous Damping Controller
With STATCOM
- 2010-10-18 21:58:01下载
- 积分：1
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Reactive-power-compensation
无功补偿matlab/simulink仿真图，建模详细，有一定参考价值！(Reactive power compensation matlab/simulink simulation map, detailed modeling, there is a certain reference value!)
- 2013-03-25 16:05:39下载
- 积分：1
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Direct_sequence_spread_spectrum_communication_syst
直接序列扩频通信系统误码率的仿真分析PN码同步方法的比较与仿真(Direct sequence spread spectrum communication system of the simulation analysis of PN Code Synchronization Comparison and Simulation)
- 2010-08-25 22:35:21下载
- 积分：1
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f22d5fb7aca2
pca code for face reconition
- 2012-04-02 14:15:35下载
- 积分：1
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power_Transfo3phCoreType
power_Transfo3phCoreType.rar,功率电子领域matlab仿真文件，已经验证过，程序运行正常(power_Transfo3phCoreType.rar,
Power electronics field matlab simulation file, has already been verified, the normal operating procedures)
- 2013-08-26 22:00:01下载
- 积分：1
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Givensr
this source code is very good
- 2013-08-16 01:26:37下载
- 积分：1
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RFmodelAM
amplitude modulation
- 2012-08-07 01:29:02下载
- 积分：1
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projetmaa103cont.m
an other test for hinfini
- 2012-08-11 01:57:15下载
- 积分：1
