ASBAI_Article

MUSIC算法估计性能分析,详细的介绍了MUSIC算法估计性能(It is very useful in array signal process )

Gold code genration in MAtlab

研究表明，构成K一L变换矩阵的向量也就是ToePhtz矩阵的特征向量。与此同时，离散 余弦变换矩阵逼近于ToePutz矩阵的特征向量矩阵，所以离散余弦变换矩阵与自然图像的 K一L变换矩阵十分相似。经过离散余弦变换后的变换系数块的协方差矩阵Cy非常接近对角 阵，即除了对角线元素以外，其它很多元素都近似为0，并且在左上角集中了主要能量。这 反映了自然图像大部分区域变化不大，亮度突变只占少数，即图像能量以低频成分为主的特 性。通过变换后的量化，舍弃对视觉效果影响较小的次要信息，可达到进一步的压缩效果。 虽然从去相关性能的意义上讲，DCT是一种次于K一L变换的准最佳变换，但是从算法实现的角度来看，DCT则远远优于K一L变换。首先，当图像的分块大小确定后，DCT的变换矩阵也就随之确定了，不随输入信号的统计特性变化而变化 其次，二维DCT能够分解成两次一维DCT，有利于硬件实现。 (Studies have shown that constitute a K L transformation matrix vector is ToePhtz eigenvector of the matrix. At the same time, discrete The cosine transform matrix approximation in ToePutz matrix eigenvector matrix, so the discrete cosine transform matrix and natural images Is very similar to a K L transformation matrix. After discrete cosine transform, the transform coefficient block of Cy is very close to the diagonal of covariance matrix Matrix, namely except diagonal elements, many other elements are approximate to 0, and focused the main energy in the upper left corner. this Reflects the natural images most area changed little, brightness mutations accounted for only a few, the energy is given priority to with low frequency components of image Sex. Through quantitative after transformation, abandoning smaller effect on the visual performance of secondary information, can achieve further compression effect. Although from related to the performance of the sense, DCT is a kind o)

Matlab双谱分析，高阶累积量的定阶，用相邻奇异值差最大定阶，绘制双谱（等高线图，双谱图，相位图，切片图）(Matlab double spectral analysis, fixed-order cumulant, with the largest difference between adjacent fixed-order singular value, drawing double spectrum (contour maps, dual spectra, phase diagram, slices))

说明：  用窗函数法设计一个能对模拟信号进行滤波的线性相位FIR低通滤波器。抽样频率为 kHz，通带截止频率为 kHz，阻带截止频率为 kHz，要求阻带最小衰减 dB。为了降低运算量，所设计滤波器的阶数要尽可能的低(With the window method to design a filter to the analog signals of linear phase FIR low-pass filter. Sampling frequency is kHz, passband cutoff frequency kHz, stopband cutoff frequency of kHz, the minimum required stopband attenuation dB. To reduce the computation, the order of the filter designed to be as low as possible)

最近邻法 分类器 matlab编写(Nearest neighbor method of matlab source code classifier )

matlab图像处理实例详解chap14——基于simulink的视频和图像处理(matlab image processing examples explain chap14- simulink-based video and image processing)

计算直流潮流的算法，基于MATLAB，忽略无功功率，只考虑有功功率。(DC Power Flow Algorithms)

ofdm仿真的matlab源代码，供参考。(OFDM matlab simulation source code for reference.)

说明：  倒立摆全状态观测器设计，在Matlab/Simulink仿真环境中实现仿真！(State observation design)