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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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singele_phase_to_3phase_svpwm_PMSM_VF
singele phase to 3phase svpwm PMSM VF
- 2014-11-23 04:22:52下载
- 积分：1
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DOA
基于压缩感知的目标DOA估计，以及常规DOA的方法(DOA Estimation Based on Compression Sensing)
- 2021-03-16 15:49:21下载
- 积分：1
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1
说明： communication matlab
- 2010-08-11 17:00:13下载
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matlab
summary of matlab tutorial
- 2009-04-17 23:31:53下载
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GP_Algorithm2.0
G-P算法计算关联维的 Matlab 程序 (升级版，mex函数，超快)
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更新部分：
引入限制短暂分离参数，使该参数大于序列平均周期时，去除了同一轨道前后点的关联，
使 r 值较小时，ln r - ln C(r) 曲线接近线性(G-P method to calculate the correlation dimension of the Matlab program (upgrade version Files function, Ultrafast)----------------------------------- Update parts : the introduction of restrictions on temporary separation parameters so that the parameter is greater than the average cycle sequence, In addition to the same orbit around the point and makes a relatively small r, r ln- ln C (r) almost linear curve)
- 2007-03-19 21:20:28下载
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find_minium
matlab优化程序，简单易用，极大提高工作效率。(matlab optimization procedures, easy to use, greatly enhancing efficiency.)
- 2007-11-27 11:10:59下载
- 积分：1
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pandi
激光谐振腔模拟，用FOx-li方法，各种不同的谐振腔模式模拟(Laser cavity simulation method with FOx-li, a variety of simulated cavity)
- 2011-11-19 20:46:07下载
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2013.4.1
单载频雷达信号在欠采样条件下产生频谱混叠，用MATLAB仿真验证的结果(Subsampling conditions of single carrier frequency radar signal spectrum aliasing, using MATLAB simulation results)
- 2013-04-14 20:49:26下载
- 积分：1
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linerprograming
liner programing with matlab
- 2010-10-10 15:42:02下载
- 积分：1
