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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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alist2sparse
说明： 把ALIST形式的矩阵转为为稀疏矩阵,是以matlab语言进行转化的(turn alist form matriax to sparse matriax)
- 2010-04-07 09:08:17下载
- 积分：1
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UKF_UKF
说明： 很好的扩张滤波算法 精度高 时间短 适合导航运算(The expansion of good short time filtering algorithm for high precision navigation operations)
- 2011-03-17 21:18:23下载
- 积分：1
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secondwave
用二代小波实现加噪信号的消噪 本次分解只做三层 可以根据需要增加次数(second wave)
- 2011-05-06 20:47:42下载
- 积分：1
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C
说明： 主要实现数表建立，查找功能，实现对数据的管理(Mainly the number of tables to achieve the establishment of search functions, to achieve the data management)
- 2009-12-31 12:34:04下载
- 积分：1
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zhengqihuanxiang
蒸气幻想简单挂机脚本.jar供研究Script的玩家学习(steam fantasy simple hook script. Script jar for research study of the player. .)
- 2014-09-18 10:35:53下载
- 积分：1
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dscdma
直接序列扩频（Direct Sequence Spread Spectrum）工作方式，简称直扩方式（DS方式）。就是用高速率的扩频序列在发射端扩展信号的频谱，而在接收端用相同的扩频码序列进行解扩，把展开的扩频信号还原成原来的信号。(irect Sequence Spread Spectrum (Direct Sequence Spread Spectrum), hereinafter referred to as Direct expansion mode (DS). Is a high rate of spread spectrum sequence extension in signal spectrum, and at the receiving end with the same spread spectrum code sequence for expansion, the expansion of the spread spectrum signal back into the original signal. )
- 2013-12-08 15:19:07下载
- 积分：1
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301724200734911
说明： 用于检测图像的复制粘贴，包括旋转、缩放等，算法是基于sift(Copy and paste for detecting images)
- 2021-03-04 17:21:52下载
- 积分：1
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0123744865
Book - Introduction to pattern recognition : a MATLAB approach - Sergios Theodoridis.
- 2010-08-27 10:45:49下载
- 积分：1
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xPCTargetManual
xPC Target 工具箱使你可以在 Simulink 的框图中加入 I/O 方块图，并用 RTW 产生代码，最后下载到另一个运行 xPC Target 实时内核的 PC 机上。对于控制和 DSP 系统来说 xPC Target 是理想的快速原型和硬件在回路测试工具，它可以使你在一台标准的 PC 机上运行实时模型。如果附加 xPC Target 嵌入模块选项，你可以把你的实时嵌入式系统放入到一台微机上，应用于生产、数据采集、标定和测试应用程序等过程中。
(xPC Target toolbox allows you to add in the Simulink block diagram of the I/O block diagram, and use RTW generated code, and finally downloaded to another running xPC Target real-time kernel of the PC machine. For the control and DSP systems is ideal for the xPC Target rapid prototyping and hardware in the loop testing tool that allows you to a standard PC, running real-time model. If the additional xPC Target Embedded Module option, you can put your real-time embedded systems to a microcomputer applied to the production, data acquisition, calibration and test applications such as process.
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- 2010-01-14 17:02:50下载
- 积分：1
