BasicwithBBandCoulomb2011Nov16

Matlab 自相关方法求声音信号包络源代码及说明(Method Matlab autocorrelation envelope of the voice signal and note the source code)

用于计算电磁场分布的时域有限差分二维算法的MATLAB实现程序(Used to calculate the electromagnetic field distribution of one-dimensional finite difference time domain algorithm to achieve program MATLAB)

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)

小波去噪的matlab程序实现，使用了db3小波，程序有详细注释(wavelet filter， programmed in Matlab)

认知无线电中基于机会频谱接入方案，仿真感知信道的选择、发送和休眠时间优化。(Opportunities for cognitive radio spectrum access scheme based on the simulation perception channel selection, transmit and sleep time optimization.)

Mathworks公司在Matlab6.5中推出了将Matlab中的.m函数编译为COM组件的工具COM Builder，使用这个工具可以方便的制作出想要的COM组件，以供其它支持COM的编程语言调用，实现Matlab和其他编程语言的整合。(The Mathworks launched in Matlab6.5 m function compiled in Matlab COM component tools COM Builder, use this tool can easily produce desired COM components for other programming language that supports COM call to achieve the integration of Matlab and other programming languages.)

有关何凯明暗原色先验去雾的MATLAB代码，此算法是对之前softmatting技术的改进，提出了一种新的算法（Guided Filtering）。其中还包括He的一篇论文（Guided Image Filtering）(MATLAB code about dark channel prior of He to dehazing, the algorithm is right here to improve the softmatting technology,proposed a new algorithm (Guided Filtering).Including a paper of He (Guided Image Filtering))

In addition to being inherently more efficient, it introduces optional arguments - to calculate in single precision - to calculate only hue or saturation or value (or combinations of them)

说明：  kalman滤波基本程序框架并针对匀速直线目标跟踪(kalman filter and the basic procedural framework for the uniform straight line tracking)

在红绿蓝三个通道内对图像进行同态滤波，消除光照(Homomorphic filtering to eliminate the light in the three channels of RGB image)